MERCEDES CLS (2015)
Running costs, common problems, and reliability data based on 6,871 real MOT tests in 2024.
MOT Pass Rate
87%
Total Tests (2024)
6,871
Avg Mileage
81,130 mi
Est. Annual Cost
£1,900
Is the 2015 MERCEDES CLS reliable?
Good reliability. Occasional issues but generally solid. That's close to the national average of 82%.
At 9 years old, 87% of MERCEDES CLSs from 2015 passed their MOT first time in 2024. That's based on 6,871 tests across the UK. The average mileage at this age is 81,130 miles.
How does the 2015 MERCEDES CLS compare?
Mileage Analysis
The average 2015 MERCEDES CLS has 81,130 miles on the clock, which is above the expected 66,600 miles for a 9-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
Best year to buy a MERCEDES CLS?
The most reliable year is the 2019 model with a 90% MOT pass rate, while the 2009 model has the lowest at 78%. The 2015 sits between the two at 87%.
How much does a 2015 MERCEDES CLS cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
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 2015 MERCEDES CLS
The 2015 MERCEDES CLS is a large car with a 2987cc diesel engine. 6,871 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. Among all cars from 2015, the average MOT pass rate is 83%, and this model beats that benchmark.
With an average of 81,130 miles at 9 years old, MERCEDES CLS owners cover more miles than the average driver.
2015 MERCEDES CLS Fuel Costs
The 2987cc diesel engine is on the larger side, so fuel won't be this car's strong point. Expect around 40 mpg in mixed driving, which works out to roughly £1,245 per year at current diesel prices of 148p per litre (based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.
What does it cost to own a 2015 MERCEDES CLS?
Total estimated annual running cost is £1,900 (£158/month), broken down as £1245 fuel, £250 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 87% pass rate. Keeping on top of servicing will help avoid surprises.
MERCEDES CLS Reliability Trend
Newer MERCEDES CLSs show better MOT pass rates than older ones, with an average improvement of 7 percentage points.
Buying a Used 2015 MERCEDES CLS
At 9 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage. If you're flexible on year, the 2019 model has the highest pass rate at 90%. With 6,871 MOT tests in our data, there's strong statistical confidence in these figures.
Alternatives to the 2015 MERCEDES CLS
If reliability is your priority, there are 3 similar cars with a higher MOT pass rate. Here are comparable diesel cars with similar engines:
- AUDI A5 (2017) 89% pass rate (+2%) from 33,531 tests
- MERCEDES GLC (2017) 90% pass rate (+3%) from 28,866 tests
- LAND ROVER RANGE ROVER (2013) 88% pass rate (+1%) from 27,426 tests
- JAGUAR XF (2014) 84% pass rate (-3%) from 26,866 tests