Does the Mercedes-Benz Viano fail the MOT on brakes more than it should?
The Mercedes-Benz Viano records 19.89 brakes failure items per 100 initial MOT tests (2019–2024), against 14.97 expected for a car of the same age mix: more than expected for its class and age (+4.92, 95% interval +4.43 to +5.40). It ranks 125 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 Viano by registration
What exactly fails on brakes?
The most frequent DVSA defect wording in this group on the Mercedes-Benz Viano is “Parking brake efficiency below minimum requirement”, recorded 1,095 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Parking brake efficiency below minimum requirement | 1,095 | 3.34 |
| Brake pipe damaged or excessively corroded | 820 | 2.50 |
| Parking brake efficiency less than 50% of the required value | 657 | 2.00 |
| Parking brake inoperative on one side | 614 | 1.87 |
| Significant brake effort recorded with no brake applied indicating a binding brake | 502 | 1.53 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 32,805 (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 Viano gets a brakes advisory, how often does it fail next time?
16.7% of Mercedes-Benz Viano MOTs with a brakes advisory were followed by a fail in the same group at the next MOT, typically 12.1 months and 6,326 miles later (5,997 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 5,997 (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 Viano 2004 · Mercedes-Benz Viano 2005 · Mercedes-Benz Viano 2006 · Mercedes-Benz Viano 2007 · Mercedes-Benz Viano 2008 · Mercedes-Benz Viano 2009 · Mercedes-Benz Viano 2010 · Mercedes-Benz Viano 2011 · Mercedes-Benz Viano 2012 · Mercedes-Benz Viano 2013 · Mercedes-Benz Viano 2014 · Mercedes-Benz Viano 2015 · Mercedes-Benz Viano in Norway · Mercedes-Benz Viano in Finland · Mercedes-Benz Viano in the Netherlands · Mercedes-Benz Viano by postcode area · Mercedes-Benz Viano body, chassis and structure failures · Mercedes-Benz Viano vehicle identification failures · Mercedes-Benz Viano lamps, reflectors and electrics failures · Mercedes-Benz Viano noise, emissions and leaks failures · Mercedes-Benz Viano road wheels failures · Mercedes-Benz Viano seat belts and airbags failures · Mercedes-Benz Viano steering failures · Mercedes-Benz Viano suspension failures · Mercedes-Benz Viano tyres failures · Mercedes-Benz Viano visibility failures