Does the Mazda Bongo fail the MOT on noise, emissions and leaks more than it should?
The Mazda Bongo records 8.87 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 7.78 expected for a car of the same age mix: more than expected for its class and age (+1.09, 95% interval +0.86 to +1.31). It ranks 135 of 678 models on noise, emissions and leaks (1 = most failures above expected).
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on noise, emissions and leaks · check a Mazda Bongo by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Mazda Bongo is “Emissions levels exceed default limits”, recorded 1,883 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Emissions levels exceed default limits | 1,883 | 2.84 |
| Emissions test unable to be completed | 920 | 1.39 |
| Emissions levels exceed the manufacturer's specified limits | 729 | 1.10 |
| Lambda coefficient outside the default limits or the range specified by the manufacturer | 668 | 1.01 |
| Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users | 545 | 0.82 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 66,406 (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 Mazda Bongo gets a noise, emissions and leaks advisory, how often does it fail next time?
7.4% of Mazda Bongo MOTs with a noise, emissions and leaks advisory were followed by a fail in the same group at the next MOT, typically 12.1 months and 4,440 miles later (7,425 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 7,425 (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
Mazda Bongo 1998 · Mazda Bongo 1999 · Mazda Bongo 2000 · Mazda Bongo 2001 · Mazda Bongo 2002 · Mazda Bongo 2003 · Mazda Bongo 2004 · Mazda Bongo 2005 · Mazda Bongo 2006 · Mazda Bongo 2007 · Mazda Bongo 2008 · Mazda Bongo 2009 · Mazda Bongo 2010 · Mazda Bongo 2011 · Mazda Bongo 2012 · Mazda Bongo 2013 · Mazda Bongo 2014 · Mazda Bongo 2015 · Mazda Bongo 2016 · Mazda Bongo 2017 · Mazda Bongo 2018 · Mazda Bongo by postcode area · Mazda Bongo body, chassis and structure failures · Mazda Bongo brakes failures · Mazda Bongo vehicle identification failures · Mazda Bongo lamps, reflectors and electrics failures · Mazda Bongo road wheels failures · Mazda Bongo seat belts and airbags failures · Mazda Bongo steering failures · Mazda Bongo suspension failures · Mazda Bongo tyres failures · Mazda Bongo visibility failures