Does the Jaguar XJ fail the MOT on noise, emissions and leaks more than it should?
The Jaguar XJ records 5.01 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 6.56 expected for a car of the same age mix: less than expected for its class and age (−1.55, 95% interval −1.67 to −1.43). It ranks 497 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 Jaguar XJ by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Jaguar XJ is “Emissions levels exceed default limits”, recorded 2,282 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Emissions levels exceed default limits | 2,282 | 1.32 |
| Engine MIL illuminated indicating a malfunction | 2,158 | 1.25 |
| Lambda coefficient outside the default limits or the range specified by the manufacturer | 1,801 | 1.04 |
| Emissions levels exceed the manufacturer's specified limits | 894 | 0.52 |
| Emissions test unable to be completed | 623 | 0.36 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 173,007 (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 Jaguar XJ gets a noise, emissions and leaks advisory, how often does it fail next time?
7.2% of Jaguar XJ 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 1,867 miles later (7,407 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 7,407 (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
Jaguar XJ 1998 · Jaguar XJ 1999 · Jaguar XJ 2000 · Jaguar XJ 2001 · Jaguar XJ 2002 · Jaguar XJ 2003 · Jaguar XJ 2004 · Jaguar XJ 2005 · Jaguar XJ 2006 · Jaguar XJ 2007 · Jaguar XJ 2008 · Jaguar XJ 2009 · Jaguar XJ 2010 · Jaguar XJ 2011 · Jaguar XJ 2012 · Jaguar XJ 2013 · Jaguar XJ 2014 · Jaguar XJ 2015 · Jaguar XJ 2016 · Jaguar XJ 2017 · Jaguar XJ 2018 · Jaguar XJ 2019 · Jaguar XJ 2020 · Jaguar XJ in the Netherlands · Jaguar XJ by postcode area · Jaguar XJ body, chassis and structure failures · Jaguar XJ brakes failures · Jaguar XJ vehicle identification failures · Jaguar XJ lamps, reflectors and electrics failures · Jaguar XJ road wheels failures · Jaguar XJ seat belts and airbags failures · Jaguar XJ steering failures · Jaguar XJ suspension failures · Jaguar XJ tyres failures · Jaguar XJ visibility failures