League table/COTTON
Make report · 2005–2025
COTTON
93.7%
first-time pass rate
2.7%
failed outright
589
MOT tests, 2005–2025
What fails a COTTON
failure defects across all COTTON models · advisories excluded
brakes is COTTON's most common failure — 1.4% of all COTTON tests record one.
| Component group | Share of defects | % of tests | Worst offenders |
|---|---|---|---|
| brakes |
|
1.4 | see ranking |
| lighting and signalling |
|
1 | see ranking |
| steering and suspension |
|
1 | see ranking |
| tyres and wheels |
|
0.5 | see ranking |
| fuel and exhaust |
|
0.7 | see ranking |
Top failure groups aggregated across every COTTON model, 2005–2025. "% of tests" = share of the make's tests recording at least one defect in that group.
COTTON 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.