Mercedes Benz GLK owners have reported a total of 13 problems for their cars built in the 3 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 Mercedes Benz GLK. The 2010 Mercedes Benz GLK cars have the most problems reported (10 problems).
The following chart shows the 9 most common problems for Mercedes Benz GLK cars. The number one most common problem is related to the vehicle's vehicle speed control (3 problems). The second most common problem is related to the vehicle's service brakes, hydraulic (2 problems).
| Problem Category | Number of Problems |
|---|---|
| Vehicle Speed Control | |
| Service Brakes | |
| Exterior Lighting | |
| Power Train | |
| Tire | |
| Visibility | |
| Structure | |
| Latches/locks/linkage | |
| Unknown Or Other |
It would not be fair to compare the Mercedes Benz GLK 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 GLK 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 Mercedes Benz GLK 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.