BMW M6 owners have reported a total of 47 problems for their cars built in the 8 model years listed in the chart below. The chart shows the number of problems reported across all service years for each given model year of the BMW M6. The 2016 BMW M6 cars have the most problems reported (12 problems).
The following chart shows the 13 most common problems for BMW M6 cars. The number one most common problem is related to the vehicle's electrical system (7 problems). The second most common problem is related to the vehicle's steering (7 problems).
| Problem Category | Number of Problems |
|---|---|
| Electrical System | |
| Steering | |
| Engine And Engine Cooling | |
| Power Train | |
| Structure | |
| Air Bag | |
| Seats | |
| Suspension | |
| Exterior Lighting | |
| Vehicle Speed Control | |
| Other Fuel System | |
| Seat Belt | |
| Equipment |
It would not be fair to compare the BMW M6 of an older model year to newer model years since older vehicles have been in service longer and thus are expected to have more problems. In order to compare the reliability across M6 model years, we use the PPMY index which is defined as the problems reported per thousand vehicles per Year. A smaller PPMY index indicates greater reliability of the given model year cars.
PPMY = P / S / Y * 1000,
where P = total problems reported during the life of a BMW M6 model year; S = total units sold of the model year; Y = years since the debut of the model year (the age of the vehicle).
The results are shown in Table 3.