Mercedes

About Mercedes Cars

Mercedes ranks joint 25th out of 70 car makes in our data (those with at least 1,000 MOT tests) by average MOT pass rate, at 87%. That's slightly above the 85% average across all models in our data, putting Mercedes in solid middle ground for reliability.

With 427 models across 35 years of data (1990 to 2024), there's a wide spread of 24 percentage points between the most and least reliable models. Choosing the right model matters significantly with Mercedes.

Most and Least Reliable Mercedes Models

The G shares the top spot with 2 other models, on a 97% average pass rate from 4,555 tests. At the other end, the CLC has the lowest at 73%. Overall, more than half of Mercedes's models have a pass rate of 85% or more, which is a good sign for the brand.

Mercedes Fuel Types

Mercedes models in our data come in 135 petrol, 178 diesel, 81 hybrid, 33 electric variants (each model counted once, under the fuel type recorded for most of its tests). Mercedes is among the manufacturers offering electric options in the UK market.