Mercedes Slc
Reliability, running costs, and MOT data across 6 years from 18,733 real MOT tests.
Avg Pass Rate
93%
Total Tests
18,733
Best Year
2021 (98%)
Years Covered
6
How reliable is the Mercedes Slc?
Mercedes Slc by Year
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About the Mercedes Slc
The Mercedes Slc has been tested 18,733 times in 2024 MOT data across 6 model years (2016 to 2021), with an average pass rate of 93%. That's comfortably above the national average of 82%, making it a reliable choice. Available as petrol.
Best and Worst Years
The 2021 model is the most reliable with a 98% pass rate from 87 tests. The 2016 model has the lowest at 89%. The 9 point spread between years means reliability varies somewhat, but no year is dramatically different.
Reliability Trend
Newer MERCEDES SLCs show better MOT pass rates than older ones, with an average improvement of 5 percentage points.
Mileage Across Years
The oldest model in our data (2016) averages 41,461 miles, while the newest (2021) averages 13,659 miles.
Compared to the Mercedes brand average of 87%, the Slc performs 6 points better, making it one of the more reliable options in the Mercedes range.
Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.