League table/MGB
Make report · 2005–2025
MGB
67.0%
first-time pass rate
26.7%
failed outright
288
MOT tests, 2005–2025
What fails a MGB
failure defects across all MGB models · advisories excluded
brakes is MGB's most common failure — 13.9% of all MGB tests record one.
| Component group | Share of defects | % of tests | Worst offenders |
|---|---|---|---|
| brakes |
|
13.9 | see ranking |
| suspension |
|
12.2 | see ranking |
| lamps and reflectors |
|
10.4 | see ranking |
| steering |
|
9.4 | see ranking |
| tyres |
|
4.9 | see ranking |
Top failure groups aggregated across every MGB model, 2005–2025. "% of tests" = share of the make's tests recording at least one defect in that group.
MGB models, ranked by test volume
0 models with ≥ 100 normal tests, 2005–2025
| Model | Pass rate | Pass % | Fail % | Median miles | Tests |
|---|
Normal tests only. Median miles is odometer reading at test where recorded. Source: DVSA anonymised MOT results, 2005–2025.