MOT Risk Index.co.uk

Does the MG ZT fail the MOT on noise, emissions and leaks more than it should?

The MG ZT records 5.44 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 9.23 expected for a car of the same age mix: less than expected for its class and age (−3.79, 95% interval −4.20 to −3.37). It ranks 637 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 MG ZT by registration

What exactly fails on noise, emissions and leaks?

The most frequent DVSA defect wording in this group on the MG ZT is “Engine MIL illuminated indicating a malfunction”, recorded 224 times in 2019–2024.

MG ZT: most frequent noise, emissions and leaks defect wordings, 2019–2024 (30+ items each)
DVSA defect wordingItemsPer 100 tests
Engine MIL illuminated indicating a malfunction2241.07
Emissions test unable to be completed1760.84
Emissions levels exceed default limits1370.66
Lambda coefficient outside the default limits or the range specified by the manufacturer1330.64
Smoke opacity levels exceed the manufacturer's specified limit1030.49

Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 20,851 (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 MG ZT gets a noise, emissions and leaks advisory, how often does it fail next time?

7.1% of MG ZT MOTs with a noise, emissions and leaks advisory were followed by a fail in the same group at the next MOT, typically 12 months and 3,186 miles later (703 advisories followed).

Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 703 (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

MG ZT 2001 · MG ZT 2002 · MG ZT 2003 · MG ZT 2004 · MG ZT 2005 · MG ZT 2006 · MG ZT by postcode area · MG ZT body, chassis and structure failures · MG ZT brakes failures · MG ZT vehicle identification failures · MG ZT lamps, reflectors and electrics failures · MG ZT road wheels failures · MG ZT seat belts and airbags failures · MG ZT steering failures · MG ZT suspension failures · MG ZT tyres failures · MG ZT visibility failures