MOT fail rates
Mercedes-Benz MOT fail rates by model
20 Mercedes-Benz models, each at its most tested age, against all cars of that age. From 6,531,558 DVSA MOT tests taken 2022 to 2025. Open a model for every age, its most common fail items and other models at the same age.
MOT data updated
| Model | Age | MOT fail rate | Tests (n) | All cars | Difference |
|---|---|---|---|---|---|
| Mercedes-Benz A-Class | 6 years | 16.2% | 173,010 | 17.8% | −1.6 pts |
| Mercedes-Benz B-Class | 10 years | 25.2% | 27,268 | 30.3% | −5.1 pts |
| Mercedes-Benz C-Class | 7 years | 17.5% | 143,293 | 20.6% | −3.1 pts |
| Mercedes-Benz Citan | 7 years | 38.4% | 12,901 | 20.6% | +17.8 pts |
| Mercedes-Benz Cla | 3 years | 13.8% | 39,186 | 12.1% | +1.7 pts |
| Mercedes-Benz Clc | 14 years | 43.5% | 9,253 | 40.3% | +3.2 pts |
| Mercedes-Benz Clk | 18 years | 38.8% | 16,271 | 43.3% | −4.5 pts |
| Mercedes-Benz Cls | 9 years | 22.7% | 10,164 | 27.1% | −4.4 pts |
| Mercedes-Benz E-Class | 6 years | 15.1% | 88,280 | 17.8% | −2.7 pts |
| Mercedes-Benz Gla | 6 years | 14.5% | 56,883 | 17.8% | −3.4 pts |
| Mercedes-Benz Glc | 5 years | 11.5% | 61,223 | 15.3% | −3.9 pts |
| Mercedes-Benz Gle | 4 years | 11.1% | 20,025 | 13.4% | −2.3 pts |
| Mercedes-Benz M-Class | 10 years | 19.7% | 14,152 | 30.3% | −10.6 pts |
| Mercedes-Benz S-Class | 6 years | 11.0% | 10,214 | 17.8% | −6.9 pts |
| Mercedes-Benz SL | 20 years | 18.4% | 6,607 | 42.8% | −24.4 pts |
| Mercedes-Benz Slc | 6 years | 12.9% | 8,273 | 17.8% | −4.9 pts |
| Mercedes-Benz Slk | 10 years | 21.7% | 20,060 | 30.3% | −8.6 pts |
| Mercedes-Benz Sprinter | 9 years | 24.3% | 5,613 | 27.1% | −2.8 pts |
| Mercedes-Benz V-Class | 6 years | 17.5% | 9,409 | 17.8% | −0.3 pts |
| Mercedes-Benz Vito | 6 years | 26.3% | 31,108 | 17.8% | +8.5 pts |
Read this with care. A fail rate is not a measure of build quality. How far cars are driven, how they are used and how well owners maintain them all change it, and wear items such as tyres and brake pads are common fails. Compare a model only with cars of the same age. Methodology and limits.
Source
Contains public sector information licensed under the Open Government Licence v3.0. Source: DVSA anonymised MOT test data, class 4 normal MOT tests, 2022 to 2025. MOT data updated 22 September 2026.
Not affiliated with or endorsed by DVSA. How we calculate these figures · Data sources