Mercedes

About Mercedes Cars

Mercedes ranks 67th out of 145 car manufacturers for MOT reliability, with an average pass rate of 87%. That's slightly above the national average of 82%, putting Mercedes in solid middle ground for reliability.

With 428 models across 35 years of data (1990 to 2024), there's a wide spread of 40 percentage points between the most and least reliable models. Choosing the right model matters significantly with Mercedes.

Most and Least Reliable Mercedes Models

The Sl 500 Grand Edition Premium A leads the range with a 100% average pass rate from 125 tests. At the other end, the 310 has the lowest at 60%. Overall, more than half of Mercedes's models achieve above-average pass rates, which is a good sign for the brand.

Mercedes Fuel Types

Mercedes models in our data come in 156 petrol, 194 diesel, 62 hybrid, 35 electric variants. Mercedes is among the manufacturers offering electric options in the UK market.

Click any model above to see detailed year-by-year reliability data, running cost breakdowns, and comparisons with similar cars. You can also enter a specific registration plate to get a full vehicle report with MOT history, mileage verification, and health score.