Where in Britain does the Mercedes-Benz 420 fail its MOT most?
Across Britain, 21.6% of 3,320 initial MOT tests (first attempts) of the Mercedes-Benz 420 failed in 2019–2024. No postcode area is at least 3 points above the rest of Britain with an interval clear of zero. It does best in Coventry (CV), −15.6 points. Area rates are not age-adjusted.
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · Mercedes-Benz 420 MOT statistics · check a Mercedes-Benz 420 by registration
Mercedes-Benz 420 in every postcode area with 100+ tests
From the largest excess over the rest of Britain to the largest shortfall.
| Area | Failed here, % | Rest of Britain, % | Difference, points | 95% interval | Tests |
|---|---|---|---|---|---|
| Coventry (CV) | 6.6 | 22.2 | −15.6 | −20.0 to −11.2 | 137 (rough estimate) |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 3,320 (initial tests) · Method: postcode area of the testing station against the same model's tests elsewhere in Britain, difference of two proportions with a 95% interval; named at 3+ points with the interval clear of zero; not age-adjusted · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
Other pages for this model
Mercedes-Benz 420 body, chassis and structure failures · Mercedes-Benz 420 brakes failures · Mercedes-Benz 420 lamps, reflectors and electrics failures · Mercedes-Benz 420 noise, emissions and leaks failures · Mercedes-Benz 420 steering failures · Mercedes-Benz 420 suspension failures · Mercedes-Benz 420 tyres failures · Mercedes-Benz 420 visibility failures