Where in Britain does the Porsche 928 fail its MOT most?
Across Britain, 23.4% of 5,000 initial MOT tests (first attempts) of the Porsche 928 failed in 2019–2024. It fails most in Bolton (BL): 30.9% against 23.1% elsewhere (+7.9 points). It does best in Gloucester (GL), −12.0 points. Area rates are not age-adjusted.
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · Porsche 928 MOT statistics · check a Porsche 928 by registration
Porsche 928 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 |
|---|---|---|---|---|---|
| Bolton (BL) | 30.9 | 23.1 | +7.9 | +0.8 to +14.9 | 168 (rough estimate) |
| Guildford (GU) | 30.4 | 23.2 | +7.2 | −0.9 to +15.4 | 125 (rough estimate) |
| Redhill (RH) | 25.7 | 23.3 | +2.4 | −5.9 to +10.7 | 109 (rough estimate) |
| Tonbridge (TN) | 24.8 | 23.3 | +1.5 | −5.4 to +8.5 | 153 (rough estimate) |
| Peterborough (PE) | 21.6 | 23.4 | −1.8 | −9.5 to +6.0 | 111 (rough estimate) |
| Reading (RG) | 19.7 | 23.5 | −3.8 | −10.9 to +3.4 | 122 (rough estimate) |
| Kingston upon Thames (KT) | 19.5 | 23.4 | −4.0 | −11.4 to +3.4 | 113 (rough estimate) |
| Birmingham (B) | 17.1 | 23.5 | −6.4 | −13.7 to +1.0 | 105 (rough estimate) |
| Gloucester (GL) | 12.0 | 24.0 | −12.0 | −16.2 to −7.8 | 250 (rough estimate) |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 5,000 (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
Porsche 928 body, chassis and structure failures · Porsche 928 brakes failures · Porsche 928 vehicle identification failures · Porsche 928 lamps, reflectors and electrics failures · Porsche 928 noise, emissions and leaks failures · Porsche 928 seat belts and airbags failures · Porsche 928 steering failures · Porsche 928 suspension failures · Porsche 928 tyres failures · Porsche 928 visibility failures