Mercedes Cls
Reliability, running costs, and MOT data across 17 years from 55,100 real MOT tests.
Avg Pass Rate
84%
Total Tests
55,100
Best Year
2019 (90%)
Years Covered
17
How reliable is the Mercedes Cls?
Mercedes Cls by Year
| Year | Pass Rate | Tests | Avg Mileage |
|---|---|---|---|
| 2021 | 90% | 149 | 25,838 mi |
| 2020 | 85% | 708 | 33,613 mi |
| 2019 | 90% | 2,938 | 42,687 mi |
| 2018 | 89% | 2,552 | 49,336 mi |
| 2017 | 87% | 3,475 | 61,581 mi |
| 2016 | 87% | 4,786 | 69,870 mi |
| 2015 | 87% | 6,871 | 81,130 mi |
| 2014 | 85% | 4,192 | 86,883 mi |
| 2013 | 83% | 7,096 | 95,825 mi |
| 2012 | 83% | 2,664 | 97,844 mi |
| 2011 | 82% | 2,675 | 100,976 mi |
| 2010 | 79% | 2,428 | 110,846 mi |
| 2009 | 78% | 2,541 | 114,393 mi |
| 2008 | 78% | 2,982 | 122,863 mi |
| 2007 | 78% | 3,915 | 122,774 mi |
| 2006 | 79% | 3,184 | 117,836 mi |
| 2005 | 81% | 1,944 | 108,622 mi |
Checking a specific Mercedes Cls?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the Mercedes Cls
The Mercedes Cls has been tested 55,100 times in 2024 MOT data across 17 model years (2005 to 2021), with an average pass rate of 84%. That's slightly above the national average of 82%. Available as diesel.
Best and Worst Years
The 2019 model is the most reliable with a 90% pass rate from 2,938 tests. The 2007 model has the lowest at 78%. The 12 point spread between years means reliability varies somewhat, but no year is dramatically different.
Reliability Trend
Newer MERCEDES CLSs show better MOT pass rates than older ones, with an average improvement of 7 percentage points.
Mileage Across Years
The oldest model in our data (2005) averages 108,622 miles, while the newest (2021) averages 25,838 miles. Older models have covered serious mileage, so suspension and drivetrain wear are worth checking.
Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.