Does the Mercedes-Benz M-Class fail the MOT on steering more than it should?
The Mercedes-Benz M-Class records 3.99 steering failure items per 100 initial MOT tests (2019–2024), against 3.94 expected for a car of the same age mix: about as expected for its class and age (the difference is within its interval or under 0.5 items per 100 tests) (+0.05, 95% interval −0.04 to +0.13). It ranks 216 of 640 models on steering (1 = most failures above expected).
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on steering · check a Mercedes-Benz M-Class by registration
What exactly fails on steering?
The most frequent DVSA defect wording in this group on the Mercedes-Benz M-Class is “A steering ball joint with excessive wear or free play”, recorded 3,226 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| A steering ball joint with excessive wear or free play | 3,226 | 1.53 |
| Steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc | 1,880 | 0.89 |
| Steering rack gaiter or ball joint dust cover damaged or deteriorated | 1,718 | 0.81 |
| Power steering fluid leaking or system malfunctioning | 409 | 0.19 |
| A steering ball joint worn to the extent there is a serious risk of detachment | 307 | 0.15 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 211,108 (initial tests) · Method: failure items (major and minor) grouped by DVSA's defect tree; wordings with 30+ items · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
If a Mercedes-Benz M-Class gets a steering advisory, how often does it fail next time?
16.4% of Mercedes-Benz M-Class MOTs with a steering advisory were followed by a fail in the same group at the next MOT, typically 12.1 months and 4,220 miles later (2,984 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 2,984 (advisories followed) · Method: the same vehicles followed to their next ordinary MOT · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
Other pages for this model
Mercedes-Benz M-Class 1999 · Mercedes-Benz M-Class 2000 · Mercedes-Benz M-Class 2001 · Mercedes-Benz M-Class 2002 · Mercedes-Benz M-Class 2003 · Mercedes-Benz M-Class 2004 · Mercedes-Benz M-Class 2005 · Mercedes-Benz M-Class 2006 · Mercedes-Benz M-Class 2007 · Mercedes-Benz M-Class 2008 · Mercedes-Benz M-Class 2009 · Mercedes-Benz M-Class 2010 · Mercedes-Benz M-Class 2011 · Mercedes-Benz M-Class 2012 · Mercedes-Benz M-Class 2013 · Mercedes-Benz M-Class 2014 · Mercedes-Benz M-Class 2015 · Mercedes-Benz M-Class in Norway · Mercedes-Benz M-Class in Finland · Mercedes-Benz M-Class in the Netherlands · Mercedes-Benz M-Class by postcode area · Mercedes-Benz M-Class body, chassis and structure failures · Mercedes-Benz M-Class brakes failures · Mercedes-Benz M-Class vehicle identification failures · Mercedes-Benz M-Class lamps, reflectors and electrics failures · Mercedes-Benz M-Class noise, emissions and leaks failures · Mercedes-Benz M-Class road wheels failures · Mercedes-Benz M-Class seat belts and airbags failures · Mercedes-Benz M-Class suspension failures · Mercedes-Benz M-Class tyres failures · Mercedes-Benz M-Class visibility failures