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R56 MCS Cold Start Issue

We’ve held off on reporting on this issue for the past few months trying to gather as much data as possible before presenting it to readers. After some investigation, we now believe we have a good picture of the issue as well as some real evidence of it. While a cold start problem doesn’t seem to be an entirely widespread phenomenon, there’s little question that there are more than a few of owners dealing with it around the world. The following report is one owner’s experience with it.

The following story was written by new MF Contributor Mike Hansen

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For most owners, purchase of the new MINI R56 has been a very positive experience. As first model year cars go, the second generation new MINI has been relatively free of problems. Sure, surfing NAM or MINI2 one will have seen the slew of rattles, or crooked bonnets… and yes there have been a couple transmissions and clutch plates replaced… but all in all, these problems have generally been easy to identify and correct. To be honest, they aren’t outside of the realm of issues associated with the previous generation car, even after five years of production. That is, until now.

Beginning this past spring there has been a common theme popping up in the Faults and Fixes threads on various MINI forums. Specifically, MCS owners complaining about a peculiarly loud engine rattle on start-up. Now the R56 is an “interesting” sounding engine to begin with. The combination of the VANOS system and the direct fuel injection solenoids give the car a very diesel-esque sound at idle. But this is a very different sound altogether.

Generally, owners experiencing this rattle note that the “cold start” aspect has less to do with the ambient temperature as it does with the inactivity of the engine. Usually this rattle occurs during the first start of the day when the engine itself is “cold” and oil has drained into the sump. Appearing to originate along the left side of the head near the cam chain, the rattle is out of synch with the normal cadence of the engine and has a metal on metal tapping quality to it. It seems to decrease with higher RPMs and as the engine warms up to operating temperatures. For most the noise starts off as an infrequent occurrence and only a minor annoyance and many don’t feel the need to bring it to their dealer’s attention. Eventually however, the frequency, duration and sheer volume of the rattle increases.

The noise is a sporadic problem and does not occur with much predictability. It therefore becomes a very difficult thing for owners to present to their dealerships or for Service Technicians to diagnose. Based on the perceived point of origin, most MINI Service Departments who have actually heard the rattle for themselves have logically focused their attention on the cam chain tensioner. Many cam chain pistons have been replaced after fining that they were receiving less than sufficient oil for proper operation. This fix has been documented under MINI Service Bulletin #110207. Unfortunately for most owners, it has only been a temporary fix with the rattle returning in only a few short weeks.

Once the replacement chain tensioner fails, focus usually turns to the head itself. Specifically the hydraulic lifters, valve guides and the VANOS Solenoid. Again the theory is that oil is failing to properly enter the head and operate the valves during cold starts. Several owners have received what equates to a full rebuild of the car’s head in an attempt to diagnose and eliminate the cold start clatter. Some owners have reported the installation of a one-way check valve during the rebuild to keep oil from draining after the engine has been turned off. Unfortunately these too seem to be only a temporary fixes with the engine rattle returning only a short time later.

Ultimately MINI has taken the giant step to replace a handful of engines not only to solve the problem for the owner, but to bring the offending power plants back to MINI for inspection. One would think this would be a sure way to stop the engine rattle… but that has not necessarily been the case. At least one owner on MINI2 reports the noise came right back after only a few months of operation following a complete engine and head swap.

So is this even a problem? Some owners report being told the cold start rattle is “completely normal” and only a “trait of the engine”. One dealership in the UK has suggested that the cause of the noise is a lack of equalization of pressure within the head by the crankcase vacuum pump causing the pump to vibrate in its journal bearings. The suggested fix was to remove the vacuum pipe during start up. Otherwise the noise was said to be causing no harm and could not be fixed by a replacement part. Again, a trait of the engine design. This is tough pill to swallow for most experiencing the issue. I would argue that a metal-on-metal rattle that goes away with some combination of oil flow and operating temperatures has to be increasing wear and tear on the internals of whatever specific parts generating the noise. For some, merely living with this cold start rattle will not be an acceptable option.

Another theory posted by one R56S owner on the Michigan MINI Motorin’ Club website provides probably one of the best technical discussions on this particular issue. The basis of the theory is that air is getting into the oil circuit operating the hydraulic lifter system causing the valves to open and close out of time and “slam” into the closing ramp of the cam (causing an out-of-time knocking from the head). A decent theory, back up by some good technical know-how (and pictures for us laymen) and the answer provided may even be a simple solution: minimize the valve lash adjustment and use lower viscosity oil. For those experiencing the noise, the recommendation was made not to rev the engine over 2000 RPM until the oil properly fills the circuit and the noise goes away as damage could occur at higher RPM’s. Sounds like a very plausible theory, but time will tell.

So why should anyone care if it’s not effecting their car? Well, speaking from experience, my car did not produce this rattle for the first 5000 miles. When it began, I heard the rattle once or twice during that month. Over a two month period it got worse and worse. Some have noticed the problem within the first 1000 miles of operation while others have yet to hear any noises of any concern. Build date doesn’t seem to be a factor either, as some November and December cars are demonstrating the same cold start engine rattle already.

Mine is one of the engines that is going back to MINI for further inspection. I have been down every road described above to no avail. I will say that my dealer (Northwest MINI) has been more than helpful and has shown their dedication to working with MINI to find some answer to this problem. The bottom line is that the cause and solution to this cold start rattle are still unknown or at least unacknowledged by MINI. Based on what I’ve seen, I believe a full engine replacement will only be a temporary fix and in effect buy time for MINI to come to a more permanent solution. Keep in mind there have been no changes to the 2008 power plant to suggest that this issue will be limited to first-year production cars. So any MCS or Clubman S could theoretically have the potential to develop this rattle on start up.

I have my car back now after six weeks in the shop addressing this cold start rattle. With a new engine in place, I am starting my break-in once again. The engine is starting and running fine but I must say my overall confidence level in this car is non-existent right now. I’m about 1/3 of the way through my warranty and have no assurances that the new engine will not develop the same problem over time. In fact, I’m aware that it most likely will. If it’s anything like the original block, it’ll be 5000-8000 before I hear it again… which puts me 2/3rds through my warranty. Like I said, ZERO confidence.
If you factor in the first attempt to address this cold start rattle (cam chain tensioner replacement) I have been without my car for 2 months out of 11. So 18% of my ownership experience to date has been spent without my new car. I sincerely hope a permanent answer comes sooner vs. later. I for one would like to recapture some of those positive feelings I had towards my MINI just a few short months ago. 


Clearly there is a lot of speculation by owners as to what’s causing the horrible cold start rattle, if any damage is occurring and what will be done (if anything) to correct the problem. Most currently believe the relationship between the oil, oil pump and ECU should be the next point of focus and that all previous “fixes” have addressed the symptoms, but not the cause of this rattle. As you might recall, the R56 will slow or stop the circulation of certain fluids during start up to speed up the engine warm-up process and conserve energy. But again, this is just owners talking and the expectation is that the MINI engineers will eventually get to the bottom of things. Speaking as a new MINI owner experiencing this problem first-hand… I for one hope this answer comes sooner rather than later.

If you would like to read more from owners experiencing this cold start rattle, or share your experiences with other owners going though this process, check out these threads over at NAM or MINI2

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Update: Since this story was written last week, we’ve been touch with MINI USA about the issue. While this problem doesn’t seem to be wide-spread (everyone I spoke with were unaware of the issue due to lack of warranty reports), they urge anyone who believes they have an issue to contact their dealer as well as MINI Customer relations. Despite not having first hand knowledge of this particular problem, everyone I spoke with seemed genuinely interesting in resolving any potential issue (whether it be cold start related or anything else) quickly and effectively.

Written By: MF Reader
M7 Tuning

211 Comments

c4 Feb 19th, 2008 Link Reply to this comment

Gabe, my hats off to you and MF for bringing up this issue, not only onto the light, but also to the powers that be at MINIUSA. As a very soon to be Clubman S owner, I read with both interest and concern about this problem which could be better described as “Piston slap”.

The bigger question remains is how this issue will affect the longetivity of the engines, and not only that, but if there is in fact an inherited design problem that could spark a massive recall.

Either way, current and future Prince engine owners are eagerly awaiting to hear from MINIUSA and hope for a prompt resolution to this problem.

PS: I guess the “old tech” TRITEC wasn’t that bad, was it?

john mcilroy Feb 20th, 2008 Link Reply to this comment

Well this was 1 of the reasons my R56 had to go after 3 months of ownership. The amount of people who will not buy another Mini duethis problem is growing.

Rocketboy_X Feb 20th, 2008 Link Reply to this comment

Nice write-up. I learned with my current Cooper S to never buy a first-year car. With my current S, it was a matter of I needed it then, so I was willing to take the risk (better than walking for a year..). As always, I wonder are we (MINI fans) just more in tune to what our car is doing over the average, say, Malibu (not knocking the Malibu, it’s a rather nice car for what it is)owners. Would they even bat an eye over a sound like this?

eager2own Feb 20th, 2008 Link Reply to this comment

Have similar problems developed in Peugeot 207s using the Prince engine?

lavardera Feb 20th, 2008 Link Reply to this comment

Good to hear its acknowledged.

RL Feb 20th, 2008 Link Reply to this comment

I have one of the first batch of R56’s (Feb 2007 delivery). I had read about the rattle and thought I had gotten lucky. But now in the East Coast winter and at 8,000+ miles, I have had the rattle three times. I drive gently and it goes away quite quickly.

Question: Is the rattle as rare as the story suggests?

Nathaniel Salzman Feb 20th, 2008 Link Reply to this comment
As you might recall, the R56 will slow or stop the circulation of certain fluids during start up to speed up the engine warm-up process and conserve energy.

Though we’re not sure this is the culprit, turning off the oil pump for any reason struck me as a horrible idea from the first look we had at the new engine. My condolences to the owners who are experiencing this as that can’t be any fun at all. It’s encouragaing, however, that MINI has in the past taken really good care of stuff like this. So the chances of this happening a year from now are probably pretty slim. Even still, the engine changes in the R56 have been a deal breaker for me since we first started hearing about the new car. And that sucks, ’cause I REALLY like the Clubman!

Nimcosi Feb 20th, 2008 Link Reply to this comment

I am not so sure the title, “R56 MCS Cold Start Issue In Detail” is an accurate one. It should probably be “R56 MCS Cold Start Noise, do you have it?”. What we have is a small but vocal group of obsessive-compulsive people that are analyzing a noise on a new engine design. No one knows if this is even an issue, as no one has had an actual failure yet. Yes, Mini has removed and replaced components and engines, but that is good customer service. Again, is there a documented case of failure due to this noise? If this truly is a widespread and fatal issue, one way or another Mini will take care of it regardless of where you are in the warranty period. So please, please just enjoy the car, it will be alright.

korby Feb 20th, 2008 Link Reply to this comment

God bless you Gabe ,You’ve got some brass ones ! I’ts only happened once to mine I was about 300 miles from a dealer ,I thought tellin my dealer would do no good seeing how they couldnt replcate it .It’s going in for service next month and I’ll tell them . Thanks !

Bob H. Feb 20th, 2008 Link Reply to this comment

Thanks for the report; When I first heard this sound on my February ‘07 build S with JCW engine upgrade, I was terrified.  After doing a bit of research on Direct Fuel Injection and how MUCH it is different from other types of Fuel Injection, I just assumed it was a “trait” of DFI engines.  Apparently I was wrong.  I recently had a schdueled Dealer Maintenence Service (22,000 miles).  I mentioned the noise to my Service Advisor and was told, after I mentioned the noise and perhaps that it may be the DFI, it was also his thought that it was due to Injection system at cold start.  I guess I’ll have to go back and discuss this issue further….

Bob H. Feb 20th, 2008 Link Reply to this comment

…and oh by the way, I do agree with Nimcosi, if it turns out to be something critical, I’m certain MINI will address it. Until that time, I’m loving every minute with this car…

Gabe Feb 20th, 2008 Link Reply to this comment

Question: Is the rattle as rare as the story suggests?

I don’t think we meant for the issue to sound rare or widespread. As you can guess there’s a fine line on the reporting of a potential issue and causing widespread panic among owners. What we’re trying to do here is just inform readers that some people are having problems and what those problems are. You may find that you have a similar problem or (more likely) you’ll say to yourself “thank God I’ve never heard that” and move on.

For me personally it’s something to look out for but my car has never had the issue. And God knows it’s seen it’s share of -0º temps this winter.

I am not so sure the title, “R56 MCS Cold Start Issue In Detail” is an accurate one. It should probably be “R56 MCS Cold Start Noise, do you have it?”.

To be honest I wasn’t sure what to call this story. I changed the title and took “in detail” to make it a little more open-ended.

If this truly is a widespread and fatal issue, one way or another Mini will take care of it regardless of where you are in the warranty period.

I think that’s a great point and one to remember. MINI has never not taken care of issues like this to my knowledge. All the issues with the R50/R53 were dealt with – many times on a case by case basis. I’m guessing this could be a similar situation if it progresses.

Jimbo Feb 20th, 2008 Link Reply to this comment

I have been waiting for this issue to be resolved before purchasing a new MINI. I am not interested in purchasing a headache. I was looking forward to ordering a nicely specced MCS PW/B this spring.

Chrissy (lilcoopr) Feb 20th, 2008 Link Reply to this comment

I know this only affects R56 Cooper S’s, but we had a customer come back with quite a rattle from her bonnet and the tech said it was a normal part of the engine sound.. “Just a trait of these engines”, although her rattle was pretty loud. I will ask him what exactly it was, but he said he’s heard it in quite a few Coopers. I don’t remember it being as bad as the S’s in these videos though. Man, they sound like a 18-wheeler truck trying to accelerate in stop-and-go traffic!!! :( Good luck getting a fix for it!

lavardera Feb 20th, 2008 Link Reply to this comment

Reading the thread at Mini2 one person who had their engine replaced stated that they were told/they believe that there were some design changes to the valve train/valve seals of the engine, and that their replacement would incorporate these changes.

Yet the account here states that the engine has not been revised, and in fact the new Clubman’s have the same engine.

Is there any definitive clarification for this – Gabe?

MCS Engine noise when cold - Page 31 - MINI2 - MINI Forum Feb 20th, 2008 Link Reply to this comment

[...] MotoringFile » Archive » R56 MCS Cold Start Issue [...]

RMB Feb 20th, 2008 Link Reply to this comment

For those questioning the merit of the owners’ reactions to this engine noise, I suspect you haven’t experienced this yourself.
I would probably be just as skeptical….however I have experienced this myself and it is a very legitimate concern. When this does happen, trust me, you will notice this is not a “normal” operating sound. I will say, without a doubt the owners that have experienced this issue are NOT over reacting.

I would not chalk this up to “funny engine sounds” we’re not familiar with on the new motor. My MCS just turner 1yr old, and has 16,000 miles. I first noticed this in December 07, after the car had sat 1 week after a vacation. It happens sporadically, but usually coincides with the car sitting for 1+day without being driven. I have been to my dealer, and it is a very difficult to explain. Dealer was unable to recreate the noise, and they are calling it, “normal operation.”

I’m hoping this will legitimize our concerns. thanks.

c4 Feb 20th, 2008 Link Reply to this comment

I think attempts to downplay the seriousness of this problem are a huge disservice to the members of this community.

It seems to me that MINI is currently puzzled by the origins of the problem and have gone as far as replacing entire engines. I do not think MINIUSA is going to engage in the business of replacing engines worth $6K-$7K for the heck of it, or just to shut up a small group of “Vocal and obsessive customers” as someone downplaying the issue posted here earlier on. Dealers and the manufacturer are not going to engage in the game of changing parts and engines left and right just for an “Imaginary” problem. When the manufacturer orders the dealer to swap a customer’s engine is because there are well founded concerns behind that decision.

I hope that MINIUSA comes with an official response to this mounting controversy surrounding the Prince engine for the mutual benefit of all involved.

MINIme Feb 20th, 2008 Link Reply to this comment

My ‘05 MCS is a cold-natured bitch! That car chokes and gags and sputters when it is started for the first time daily. It also hesitates and stalls when cold. This is a very disturbing experience that I endure every single day. I have addressed the problem with 2 different dealers and get the same answer, “can’t find anything”. The last time I had the car serviced (last week) the SA told me that was just the nature of these cars. Frightening.

I realize that you are addressing the R56 in this posting, but the problem is not just isolated to that model.

Ellis Feb 20th, 2008 Link Reply to this comment

I think it’s how the way we drive “out” the car immediately after starting it. This morning was -5 degrees and I only warm it up for 2 minutes; drove out I tell you that the car drives like a truck with clanking noise for about a minute until I reach the stop sign. Then it was gone. This happen to me twice; once today and the other was 3 weeks ago. In between those dates; I warm up the car for about 7 minutes before I drove out and I did not experience it. It’s been really cold here in Chicago. So don’t drive out the car immediately when weather temp. is cold.

c4 Feb 20th, 2008 Link Reply to this comment

What happens if my Turbocharged Prince engine self-destructs after the warranty period has ended? What then will be anyone’s recourse if such event were to happen? What their response will be in a court of law if the customer was told repeatedly by the dealer that “They all do it” and that the noise is “The nature of the beast”?

What happens if an independent review panel finds inherited design defects with the engine that the manufacturer chose to downplay and ignore?

I don’t know about you guys, but I plan to hold onto my Clubman S for at least 10 years. Engine longetivity and reliability are very high on my expectations list.

I don’t dump cars every 3 or 4 years. Not even the truly rich do that.

DBM Feb 20th, 2008 Link Reply to this comment

After reading all these posts and forums on this issue, I haven’t noticed anyone mention that the most wear done to an engine is upon start-up. Engines are similar to light bulbs. Light bulbs burn out mostly because they are constantly turned off and on not through their use. I understand everyones concerns and have the same concerns because I own a R56S. Even after this expose the same questions remain and they are:

What is causing this issue? Can it be Fixed? Does the sound cause premature wear/damage? (This in my mind is the most important one) Will Mini stand behind it’s product if it is an issue that causes premature wear?(This one is also real important)

Until these questions are answered it is all speculation and emotional reactions.

iNomis Feb 20th, 2008 Link Reply to this comment

I have experienced this loud unatural noise twice in my year of ownership. (once every 400-500 starts?) To me the solutions are worse than the problem at this point. At long as it does not occur often I can live with it while it’s under warranty. Hopefully we’ll have confirmed info on the cause and potential damage before the warranty expires.

My infrequent noise has nothing to do with driving, it’s a ruckus right after start and while idling. Most of the time I CAN drive the car completely cold with no issues.

cct1 Feb 20th, 2008 Link Reply to this comment

It’s a frustrating issue–its sporadic, and no one knows for sure whats causing it. I doubt it’s “piston slap”–I think the current engine is too well engineered for them to make a mistake like that, and I think they would have figured it out by now if it was (and I also believe you’d see it on the base Cooper).

My money is still on the “oil on demand” technology, time will tell.

I’m between a 135i and stage II JCW as my next vehicle; I’d hate to get out of a MINI, but I won’t even consider another one until this has been fixed–and I believe it will be.

sodly Feb 20th, 2008 Link Reply to this comment

What about the R53 cold start issues? The R56 is out yet there’s still no fix for my ‘05 JCW cold start issues. Geez.

lavardera Feb 20th, 2008 Link Reply to this comment

Its definitely not normal – the car does not do it every day. If it did, then you might have a case to call it normal. But it does not, and I suspect that there are lots of people that hear it and shrug it off, are not so into their car that they read web sites like this. I suspect it is very widespread. I’ve seen it only with cold weather and I suspect if you live somewhere warm you might never hear it.

I have to agree with Frank (C4) – we have no way to know if this will shorten the life of the engine, and how that will play out after the warrantee is up. Any hint that the life has been shortened and BMW has bought themselves an extended warrantee for the first two model years. Ultimately they will have to promise that there is no affect on the engine and back it up with extended service.

And what of Frank? C4 buying into a problem that he cried wolf about during the R56 intro – karma is tough.

c4 Feb 20th, 2008 Link Reply to this comment

The R53 start cold issues are a totally different issue, mostly caused by buggy ECU controlling software. The two problems are very different in nature.

c4 Feb 20th, 2008 Link Reply to this comment

Karma is tough indeed it is. I still trust BMW is going to come up to the plate and offer a solution if the problem is duly indentified.

How is BMW’s track record when it comes to known mechanical issues?

lavardera Feb 20th, 2008 Link Reply to this comment

Just read the discussion at the Michigan Mini Club site linked above. To me this sounds very credible, but of course its one engineers diagnosis and Mini/BMW has to reach their own conclusion.

JFS Feb 20th, 2008 Link Reply to this comment

Great write up Mike. Thank you.

Ken Feb 20th, 2008 Link Reply to this comment

I experience this every morning. I live in Minnesota where it’s COLD. I always figured it was just do to a cold start and that nothing was wrong. I’ve since sent this article to the dealer.

I have had another BIGGER issue with the cold in the fact that many of us here in Minnesota and in Canada have had problems with our 07’s with a freezing throttle plate which causes the car to run very rough and undriveable. I’ve had the car in 4 times for de-icing and once for a fix, which is not guaranteed. The frozen throttle doesn’t allow air into the engine. It’s moisture that accumulates and isn’t burning off.

c4 Feb 20th, 2008 Link Reply to this comment

MINIUSA didn’t have first hand knowledge of the problem? How about the plethora of PUMA reports generated by the dealer network?

c4 Feb 20th, 2008 Link Reply to this comment

Lavardera, the problem has been reported in warm weather as well.

fdavid Feb 20th, 2008 Link Reply to this comment

All I can say is that Gabe and MotoringFile as a whole, has really shown that a blog can sometimes make a difference. I have to admit that when I joined MF back in 05 I was very skeptical and even remember going to NAM and ask if MF was not an independent source from BMW and MINI. Well you guys have definitely proved me wrong. This is fantastic and really encouraging as it really solidifies my belief that MF is a legit, professionally run information site whose passion from the editors is quite noticeable everyday day. Well done, and although this puts the brakes momentarily on the purchase of a JCW R56, I am definitely confident that writeups like this will only make the revised 09 R56 a much better purchase just like my current R53 05 proved to be so far. congrats guys, A loyal reader, fdb

eager2own Feb 20th, 2008 Link Reply to this comment

Well, i think I answered my own question: Peugeot 207s using the same engine seem to have the same issue:

http://youtube.com/watch?v=oUZqJyf1hhU&feature=related,

fdavid Feb 20th, 2008 Link Reply to this comment

…and of course much credit to MF Contributor Mike Hansen!! Credit to whom credit is due right?

Marcus Soori Feb 20th, 2008 Link Reply to this comment

Gabe, great write-up. I think it’s time for us all to admit that the 2006 Minis are the best ever. No problems with my supercharged MCS!! Also no horrible interior design or rattles. I love my car! Sorry to the R56 owners, but maybe you should consider buying the late model year previous generation Minis? They look better too!

Brian Feb 20th, 2008 Link Reply to this comment

Maybe they built the cars with diesel engine parts by mistake.

(just going for some humor)

PGT Feb 20th, 2008 Link Reply to this comment

Issue? No, a cold start ‘issue’ is what the R53 has…..won’t start. We had this on the ‘05 and the ‘06. Some noise during a cold start on the R56 is a nuisance, but won’t leave you stranded. It’s good to hear MINI acknowledges an issue, unlike the R53.

c4 Feb 20th, 2008 Link Reply to this comment

MINIME, I think that the real problem in your situation is the two inept dealers that haven’t been able to troubleshoot your issues.

I have a ‘05 R53 S with 37K+ miles and the car never once sputters, hesitates or stalls when the engine is turned on first thing in the morning. So, no they all don’t do it.

I am afraid your “wonderful” dealer don’t want to deal with you and your car.

Nate Feb 20th, 2008 Link Reply to this comment

Hey Guys,

I’m posting from Northern Canada where this rattle has turned into a REAL issue over the winter. Of the 8 months that I’ve owned my 2007 Cooper S, it has been in the shop for 5 of those months. Full engine replacement, several sensors replaced and it’s grown into an issue that causes it to stall when the the temp outside is sub zero.

It’s starting to look like they’re considering a second engine replacement. I wouldn’t want to own one of these things once the warranty expires.

brad. Feb 20th, 2008 Link Reply to this comment

a great bit of insight. thanks so much for publishing this, gabe.

Dr Obnxs Feb 20th, 2008 Link Reply to this comment

There is a real issue here. The fact that it comes on more with miles driven, and isn’t universal to all cars are massive red flags to anyone who’s done any product dev or engineering at all. SOMETHING isn’t right. Things out of assembly lines are supposed to be identical, and these sure as heck aren’t. It’s hard to know the long term consiquences when the root cause isn’t known.

I’m not sure about the rest of you, but I’ve been hearing of this with ever increasing frequency for months. More and more owners are speaking up about it, and while accurate numbers aren’t out there, it’s obviously reached some sort of critical mass in that you can search YouTube and find multiple examples, every large enthusiast site has discussions on it, and it’s finally passed the threshold of enough concern to have an article here.

I’m hoping that there’s a good root cause analysis that results in a credible explanation and solution path. Independant of the potential damage that may be happening to the engine, there sure is a real large customer service issue to deal with. This isn’t what people expect from modern cars.

Matt

Stephan Feb 20th, 2008 Link Reply to this comment

Doesn’t sound good at all, kinda reminds me of the Chevy piston slap issues.

Nimcosi Feb 20th, 2008 Link Reply to this comment
For those questioning the merit of the owners’ reactions to this engine noise, I suspect you haven’t experienced this yourself.

Actually, in my case I have heard the noise on my R56S. Does the car break-down or to malfunction in any way when I hear this noise? No. Can I still drive the car normally and without ill effect? Yes. Is this a noise that could be indicative of a longer term problem? Maybe or maybe not. Until I hear of someone’s R56S having a catastrophic failure directly related to this noise, I will continue to happily motor. Life is too short.

Shamus Feb 20th, 2008 Link Reply to this comment

Boy, can I tell you, ‘cold start’ sure doesn’t mean ‘cold weather’! I’ve been experiencing this problem here in San Francisco for the last few months (avg temp around 50’s). Oddly enough, it sounds more to me like an old-fashioned knock problem like you used to find when your timing was bad. I wouldn’t be surprised that with the engine management system being an indecipherable coding nightmare, that there would be a kink in the programing that allows the engine idle timing to go all loopy when cold. It would be an easy enough scenario to comprehend. Besides, anyone who’s ever had an old engine with piston slap or loose chain tension can testify, they usually don’t go away when warm.

Nimcosi Feb 20th, 2008 Link Reply to this comment

I would also like to point out from the R56S manual on page 36 is states: Do not let the engine warm up with the vehicle at a standstill. Move off immediately at a moderate engine speed.

So the actual act of sitting there listening to your engine may be causing the noise. Go drive!

Dr Obnxs Feb 20th, 2008 Link Reply to this comment

Nimcosi, This

Can I still drive the car normally and without ill effect? Yes.

really assumes a conclusion of which there is no absolute knowledge. How do you know that there’s no ill effect? Taken your engine apart for detailed inspection? It’s a hope at best. While it’s fine for you to not weigh these sypmtoms as worthy of your concern, it’s alwful presumptuous of you to tell everyone to think like you do!

And for what it’s worth, I can think of absolutely no reason as to why a car that’s cold shouldn’t warm up at rest. At idle with no load is the least stress an engine ever sees!

Matt

Brendan Feb 20th, 2008 Link Reply to this comment

I say if you hear the sound promptly go drive the piss out of your car. You have to make the engine fail before your warranty is up. Also has anyone really questioned the practice of changing the oil only every 20,000 miles? Could that have something to do with it? Doesn’t oil over time get dirty, and possibly change viscosity? I’m no chemical engineer, but maybe that has something to do with it.

ImUrTrboLvr Feb 20th, 2008 Link Reply to this comment

I just sold my 07 Cooper S for a loaded VW GTI! lovin’ it…just thought I would throw that out there.

Nimcosi Feb 20th, 2008 Link Reply to this comment
really assumes a conclusion of which there is no absolute knowledge. How do you know that there’s no ill effect? Taken your engine apart for detailed inspection? It’s a hope at best. While it’s fine for you to not weigh these sypmtoms as worthy of your concern, it’s alwful presumptuous of you to tell everyone to think like you do!

This is a two way street. People are assuming that something is catastrophically wrong. Yet there is no evidence to that effect. Explain to me how this is any different. Heck, even Mini states that “if” you think you have a problem contact your dealer as well as customer relations.

And for what it’s worth, I can think of absolutely no reason as to why a car that’s cold shouldn’t warm up at rest. At idle with no load is the least stress an engine ever sees!

As far as I can recall the R56S engine has a chain driven oil pump. The manual telling you to drive at a moderate pace and not let the car sit at idle when starting would seem to be directly related. Faster engine rotation equals faster oil distribution after startup. The noise we hear supposedly only occurs at idle and not under throttle. So while there may be a noise, maybe just maybe what the manual says is there for a reason.

C4 Feb 20th, 2008 Link Reply to this comment

The owner’s manual in the R53 has the same exact warning about not letting the engine warm up while the car sits standing still.

There is no doubt this is a huge PR hot potato mess in the making for MINI…

korby Feb 20th, 2008 Link Reply to this comment

The noise happens under throttle + loss of power .

Paul Feb 20th, 2008 Link Reply to this comment

Nimcosi,

I have driven off straight away whilst this noise occurs and I can tell you that it does not go away any quicker. I can be over a mile down the road before the noise stops.

I’m sure if you read through any car manual you will find a similar statement about driving off straight away – it is standard practice from manufacturers to write this in a handbook.

I would like to ‘just enjoy the car’ as you suggest, but this is difficult when you consider that excessive noises from mechanical components goes hand in hand with excessive wear, and is certainly an indication that there is a problem.

RMB Feb 20th, 2008 Link Reply to this comment
So the actual act of sitting there listening to your engine may be causing the noise. Go drive!

From this statement its obvious you have yet to experience this symptom. The noise continues while driving….not just at idle. In fact, it worsens under heavier engine load.

Nimcosi Feb 20th, 2008 Link Reply to this comment
From this statement its obvious you have yet to experience this symptom. The noise continues while driving….not just at idle. In fact, it worsens under heavier engine load.

Actually I have heard the issue (see a few posts up). But I have not experienced the noise worsening under load. It simply disappears nor have I experienced power loss. Maybe we are talking about two different issues?

Regardless, the point I have been trying to get across is that maybe getting the pitchforks out and going rape and pillage Mini is a bit hasty. Yes, there is a noise, but there have been no failures directly attributed to the noise (yet). When and if there is a failure, then grab your pitch fork if Mini does not fix the issue then we rape and pillage. Until then ENJOY your Mini.

Dr Obnxs Feb 20th, 2008 Link Reply to this comment

Nimcosi,

This is a two way street. People are assuming that something is catastrophically wrong.

Be carefull with vocabulary. SOME are hypothisizing catastrophy, but MOST are just expressing concern and worry. This is exactly the right response when an expensive product isn’t working to expectation. Either that of the buyer, or that set by the seller (I haven’t seen any warning “If your car sounds like chains in a bucket when started, don’t worry it’s normal.) Combine this with the facts that the symptoms change over time (red flag), that there was the postulation that this was a timing chain tensioner that now seems not to be it (red flag), that heads have been rebuilt (red flag) and full engines have been replaced (major red flag) all without any definitive root cause, I’d say that expressions of worry and concern are very, very warranted. Most who have come across this issue have owned cars in the past, and are well aware of what normal ranges of operation are.

Crap, I’m an avid car owner and modifier, some even consider me an authority on the new Minis, and how cars work in general, and I’d be really, really worried about this! So much so that I’ll probably delay the potential purchase of a Clubman until I know more about this issues resolution.

Matt

Dr Obnxs Feb 20th, 2008 Link Reply to this comment

And the comment about the oil distribution by a chain in the drive of the oil pump doesn’t hold water. The chain will distribut oil to the gears just fine at idle. The way the hydrolic lifters or any pressurized lubrication system isn’t by the chain, it’s via the oil pump, and the pressurized oil gallies.

Matt

Dr Obnxs Feb 20th, 2008 Link Reply to this comment

I placed the order for my 207 cc gt in May and eventually received it end of August. Within 2 weeks I queried a knocking noise in the engine and a jumping or hesitation on acceleration. I took the car back to the dealer who said after two weeks of having it that nothing was wrong. I took it for a second opinion and was told the same again, that the knocking was standard with the engine and they couldnt experience the hesitations i had felt. Within the next couple of weeks the warning lights came on and the display showed engine malfunction. The cylinder head had broken. So infact there had been a problem.

From http://www.whatcar.co.uk/car-review-readers.aspx?RT=2714

No clue if this is the exact same problem, sould like this guy had a bad head.

Matt

C4 Feb 20th, 2008 Link Reply to this comment

Maybe the French can’t still be trusted to build a reliable motor?

lavardera Feb 20th, 2008 Link Reply to this comment

Since Mini is suggesting we speak to customer relations – does anybody have an email address? I don’t feel like being on the phone with them.

fdavid Feb 20th, 2008 Link Reply to this comment

Oh boy. I went through those videos once again and that sounds awful. It can get tiring to pull into a gas station and be asked if your runs on diesel. Yikes!! That’s no good. Went VW’s site and built a GTi and…no way Jose!…Mini better solve this fast because those VW’s look hideous and I really miss the chance to have so many options even though I am a black car purist.

Dr Obnxs Feb 20th, 2008 Link Reply to this comment
Maybe the French can’t still be trusted to build a reliable motor?

Maybe, except for the fact the Mini Prince is built in England…. ;)

Matt

anonymous Feb 20th, 2008 Link Reply to this comment

I really think, looking a the big picture Mini made a huge mistake changing the car so much. It’s now a totally different vehicle, and to an 05 R53 owner it’s not even close to being a mini anymore. I loved my 02, I love my 05 even more, but when it comes time for replacement, I’m not buying another one. I’m very happy for the folks who love their 07-08’s, and hope you have the same WONDERFUL experiences I had and still have driving my Mini,the new one doesn’t compare, apples and oranges So to Mini USA,I say thanks for the fun…..on to the next…maybe a z-4 or a 1 series :-)

Victor Feb 20th, 2008 Link Reply to this comment

My August built did this once….in December when it was above freezing…i have since seen many sub freezing day up here in the great white north and not heard it since…I am sure it will be a matter of time till i hear it more offten.

When i do i will get it fixed and sell the car.

Dr Obnxs Feb 20th, 2008 Link Reply to this comment

These last two comments are why Mini needs to close this quickly…

Matt

Nimcosi Feb 20th, 2008 Link Reply to this comment
These last two comments are why Mini needs to close this quickly…

100% Agree.

fdavid Feb 20th, 2008 Link Reply to this comment

Its funny to see how you guys get all nervous. Why are you calling for shoting down this discussion? Do you want to use a “dont ask dont tell policy?”. Everyone relax!! = )

Dave Mac Mini Feb 20th, 2008 Link Reply to this comment

My service manager tells me that the problem seems to be related to a couple of pulleys on a belt on the side of the engine. These pulleys actually touch each other when rotating, causing metal to metal contact, causing the noise, which does go away as the car warms up. I am not sure what pulleys he is referring to, but he claims to have observed this and seen the metal to metal contact, which he says is a “strange design”. However, if this is the case, it should not cause any long term internal engine damage. I have heard it on my car, and it always sounded like someting external to me. I hope he is right.

Dave Mac Mini Feb 20th, 2008 Link Reply to this comment

anonymous, I also had an 02, and an 05, and I agree that the 07 is totally different. However, in my opinion it is vastly superior to the older one, which I really liked, but the 07 is a far better car. Not as edgy and loud and rough, if that’s what you want, but in my case, I will buy another when my lease is up, likely a Clubman. Different strokes, I guess. A Z-4 or a 1 series will be even more refined than the MINI, but good choices anyway, so whatever you decide, enjoy!

bavarian racing green Feb 20th, 2008 Link Reply to this comment

…news flash…

…sometimes things don’t work right…

…it is the chance everyone takes when they buy a car…

…for my money, i’ll still bet on mini/bmw as their quality is ABOVE average…

…i feel for those effected, but anything produced by humans is inherently flawed and prone to laws of entropy…

…my ‘91 crx has never had a mechanical problem in 192,000miand i know that is mostly LUCK…

…so i am thankful…

…until there is a recall on this issue, we should all relax a little…

…at least in this community we talk about our issues…

…now go enjoy your 99.99% wonderful mini…

Ryan Feb 20th, 2008 Link Reply to this comment

I have 20,000 miles on my ‘07 MINI, and it runs perfectly! After hearing/seeing the video samples that Gabe posted, I thought to myself and said that if my car sounded like that, I would be freaking out and bring it promptly to the MINI dealer. So I went out and checked and it does in fact make that rattle noise. Should I be concerned? Yes and no. The fact that I have 20,000 miles on, and considering my dealership told me I am excessively driving it (it’s not even a year old, it will be in May) maybe it’s not a huge issue at all. I’m not saying it’s something to just brush off your shoulder cause I did call my dealer to have a look at it, but until it gets worse, that’s when I should be concerned.

My point is that if Gabe didn’t post this, I wouldn’t have noticed.

Ryan Feb 20th, 2008 Link Reply to this comment

… and also… BMW is known to be a reputable company. They wouldn’t let issues like this, if it were a huge concern, under their sleeves.

Shamus Feb 20th, 2008 Link Reply to this comment

For all of you chiming in with your two cents on an issue you don’t have, please, and with respect, leave it alone! This isn’t a dash rattle or a rubbing bonnet we’re talking about here, or the dreaded stumble of previous models. We are facing a fairly serious problem without a definable source that can be the cause of major issues along the line if left untreated. Idling it until warm, driving it till it goes away, or ignoring the problem altogether are not viable solutions! Please leave the idle speculations, VW shopping and cross-model bashing to the NAM forums.

My tirade has ended – Thank you.

Craig Feb 20th, 2008 Link Reply to this comment

I don’t know for certain how MINI handles warranty part returns. However when I worked in quality control for a parts supplier to a major farm equipment manufacturer I know haw that was handled. When a failed part was removed in the field it was returned to the equipment manufacturer who then sent it back to us. We would then inspect it for cause of failure and send back a report. If a failure mode was determined to be common we had to make a reasonable effort to fix the design.

So if the cause of this issue is common enough MINI should, through inspection of returned parts and whole engines be able to determine the root cause. I think it likely that even if this is not due to or causing excess wear and tear MINI will fix it. BMW/MINI have an image and a reputation as a high-line auto manufacturer. They realize that people will not accept this kind of noise no matter how much they are reassured that there is no damage occurring.

For example I own a 12/05 production R53 with the limited slip diff. I had 2 issues that I was not concerned about other than they were annoying. I had a slight rattle while idling which was fixed by putting in a revised flywheel. I also had a slight moaning noise from the diff when making tight turns (parking lot maneuvers) which was fixed by changing the tranny fluid. In my experience, most manufacturers would have shrugged off those issues as normal operation. MINI is concerned enough about their image that they were quite willing to fix those issues since they irritated me.

Has MINI given any evidence that they would be unwilling to fix this type of issue? At least once it brought to their attention and a solution is found?

b4mmy Feb 20th, 2008 Link Reply to this comment

Mine does it… I’ve had the car for 14 months and I’d say it’s rattled for 2/3rds of that time. What will my dealer do if I take it in though?

Dr Obnxs Feb 20th, 2008 Link Reply to this comment
Has MINI given any evidence that they would be unwilling to fix this type of issue? At least once it brought to their attention and a solution is found?

Yes. Read about CVT failures and SC failures. You can read lots and lots of posts where the failure rate of major systems is above what you would like to see and there are many that were just blown off. Read about the spontaneous engine bay fires from power steering and DSC module failures. While the number of people that this has effected isn’t all that high, it’s not hard to look for times when Mini/BMW hasn’t stepped up to the plate to fix issues. Ask about all the people who had strut tower mushrooming where the dealers and Mini called it a driver issue. Read about the cracked strut guide plates