The car front and rear tires were of different size and I noticed when I got the car from dealer next day as the car would drift towards one side. It gave "drivetrain error" since its all wheel drive with power not being equally distributed due to different RPM on front and rear. This wasn't the case when I test drove the day before. I kept thinking its a transmission issue but it was tire that was causing it. At high speed (40-60mph) when I take off from gas the car would drift to one side and would stall. This is serious safety issue and could have caused not only passenger life but also major transmission and drivetrain breakdown. The dealer swapped the tires because with mismatched tires the car would have been non-drivable at the time I bought. This AWD is very sensitive to tires tread differences. After calling dealer he is denying and saying its "as-is" and not responsible for anything.

- Corpus Christi, TX, USA

Was driving down the street and car stopped. Dealer said I needed a new engine on a 3 yr old car. Engine covered under warranty.a few years later the drive shaft failed as I was driving. Believe it was related to removing engine and not securing all parts. How could this happen to a 5 yr old car? dealer nor BMW usa would not cover the 2800 costs.

- Fort Washington, PA, USA

I ran over a pot hole, about 4" deep, and both passenger side rims were bent so bad that they have to be replaced. The tires also had to be replaced along with the electronic power steering module. Total cost of repair was $8,229 I previously had a BMW 750il 2008. I also hit a pot hole at about 45 mph and the front rim cracked and back rim bent. Both the rims and tires had to be replaced and cost over $3000. The bmws are just to heavy for the aluminum rims they come with. In over 40 years of driving I have never had a problem with rims until I started driving bmws, and I have hit a number of pot holes before. Someone should make bmws come equipped with steel rims. Their cheap rims are going to get someone killed.

- Montebello, CA, USA