Does the Mercedes-Benz S-Class fail the MOT on brakes more than it should?
The Mercedes-Benz S-Class records 8.44 brakes failure items per 100 initial MOT tests (2019–2024), against 11.56 expected for a car of the same age mix: less than expected for its class and age (−3.12, 95% interval −3.29 to −2.94). It ranks 506 of 712 models on brakes (1 = most failures above expected).
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on brakes · check a Mercedes-Benz S-Class by registration
What exactly fails on brakes?
The most frequent DVSA defect wording in this group on the Mercedes-Benz S-Class is “Brake pipe damaged or excessively corroded”, recorded 2,427 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Brake pipe damaged or excessively corroded | 2,427 | 1.63 |
| Parking brake efficiency below minimum requirement | 1,578 | 1.06 |
| a brake lining or pad worn below 1.5mm | 1,515 | 1.02 |
| Parking brake efficiency less than 50% of the required value | 923 | 0.62 |
| Parking brake inoperative on one side | 761 | 0.51 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 148,892 (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 S-Class gets a brakes advisory, how often does it fail next time?
9.8% of Mercedes-Benz S-Class MOTs with a brakes advisory were followed by a fail in the same group at the next MOT, typically 12.1 months and 4,286 miles later (20,103 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 20,103 (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 S-Class 1999 · Mercedes-Benz S-Class 2000 · Mercedes-Benz S-Class 2001 · Mercedes-Benz S-Class 2002 · Mercedes-Benz S-Class 2003 · Mercedes-Benz S-Class 2004 · Mercedes-Benz S-Class 2005 · Mercedes-Benz S-Class 2006 · Mercedes-Benz S-Class 2007 · Mercedes-Benz S-Class 2008 · Mercedes-Benz S-Class 2009 · Mercedes-Benz S-Class 2010 · Mercedes-Benz S-Class 2011 · Mercedes-Benz S-Class 2012 · Mercedes-Benz S-Class 2013 · Mercedes-Benz S-Class 2014 · Mercedes-Benz S-Class 2015 · Mercedes-Benz S-Class 2016 · Mercedes-Benz S-Class 2017 · Mercedes-Benz S-Class 2018 · Mercedes-Benz S-Class 2019 · Mercedes-Benz S-Class 2020 · Mercedes-Benz S-Class in Norway · Mercedes-Benz S-Class in Finland · Mercedes-Benz S-Class in the Netherlands · Mercedes-Benz S-Class by postcode area · Mercedes-Benz S-Class body, chassis and structure failures · Mercedes-Benz S-Class vehicle identification failures · Mercedes-Benz S-Class lamps, reflectors and electrics failures · Mercedes-Benz S-Class noise, emissions and leaks failures · Mercedes-Benz S-Class road wheels failures · Mercedes-Benz S-Class seat belts and airbags failures · Mercedes-Benz S-Class steering failures · Mercedes-Benz S-Class suspension failures · Mercedes-Benz S-Class tyres failures · Mercedes-Benz S-Class visibility failures