1,910 tests in 2025
Mercedes MOT pass rates
Mercedes’s first-time fail rate across 1 models was 19%, better than the national 22.6%. The spread between models below is the interesting part.
| Model | Tests | Pass rate | Fail rate | Median miles |
|---|---|---|---|---|
| Unclassified | 1,910 | 81% | 19% | 69,576 |
Fail rates are first attempts at class 4 normal tests in 2025, from DVSA’s anonymised data (retrieved 2026-09-12). Age mix drives a lot of the spread: a model sold mostly since 2020 will beat one whose survivors average 15 years old. Each model page shows the rate by age band.