1,604,778 tests in 2025
Mercedes-Benz MOT pass rates
Mercedes-Benz’s first-time fail rate across 37 models was 19.4%, better than the national 22.6%. The spread between models below is the interesting part.
| Model | Tests | Pass rate | Fail rate | Median miles |
|---|---|---|---|---|
| A-Class | 336,191 | 81.9% | 18.1% | 58,237 |
| C-Class | 334,841 | 78.4% | 21.6% | 83,842 |
| E-Class | 216,064 | 80.1% | 19.9% | 88,620 |
| Gla | 84,373 | 85.8% | 14.2% | 49,349 |
| Vito | 80,851 | 73.6% | 26.4% | 132,054 |
| Glc | 77,379 | 88.1% | 11.9% | 52,120 |
| Cla | 69,016 | 83.6% | 16.4% | 54,163 |
| B-Class | 65,747 | 77.1% | 22.9% | 68,191 |
| Slk | 50,204 | 75.4% | 24.6% | 68,875 |
| Gle | 30,768 | 88.8% | 11.2% | 54,827 |
| Ml | 27,008 | 77.9% | 22.1% | 111,319 |
| S-Class | 24,603 | 86.6% | 13.4% | 85,328 |
| Clk | 23,582 | 68.7% | 31.3% | 102,190 |
| Sprinter | 23,000 | 76.2% | 23.8% | 117,091 |
| Cls | 20,904 | 77.4% | 22.6% | 91,317 |
| Sl | 19,227 | 85.2% | 14.8% | 64,676 |
| Citan | 18,736 | 70.1% | 29.9% | 99,599 |
| V-Class | 13,198 | 84.6% | 15.4% | 86,945 |
| Eqc | 11,628 | 85.3% | 14.7% | 34,448 |
| Glb | 11,043 | 91.6% | 8.4% | 32,122 |
| Eqa | 9,053 | 91.1% | 8.9% | 29,216 |
| Slc | 8,174 | 86.8% | 13.2% | 33,360 |
| Amg | 7,619 | 88.3% | 11.7% | 27,574 |
| Clc | 7,463 | 62.7% | 37.3% | 101,866 |
| Viano | 4,768 | 72.8% | 27.2% | 143,170 |
| X-Class | 3,446 | 84.4% | 15.6% | 64,161 |
| Gl | 3,258 | 85.4% | 14.6% | 103,582 |
| G-Class | 3,170 | 89.7% | 10.3% | 39,647 |
| Eqb | 2,942 | 86.7% | 13.3% | 28,765 |
| Gls | 2,826 | 87.8% | 12.2% | 55,338 |
| Cl | 2,668 | 81.7% | 18.3% | 91,728 |
| 300 | 2,486 | 81.7% | 18.3% | 105,570 |
| 190 | 2,373 | 76.8% | 23.2% | 120,198 |
| Eqe | 2,142 | 94.7% | 5.3% | 37,898 |
| R | 1,642 | 77.6% | 22.4% | 122,948 |
| Gt | 1,242 | 93% | 7% | 23,090 |
| Eqv | 1,143 | 89.3% | 10.7% | 44,638 |
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.