League table/SUN
Make report · 2005–2025
SUN
90.8%
first-time pass rate
6.4%
failed outright
173
MOT tests, 2005–2025
What fails a SUN
failure defects across all SUN models · advisories excluded
brakes is SUN's most common failure — 5.8% of all SUN tests record one.
| Component group | Share of defects | % of tests | Worst offenders |
|---|---|---|---|
| brakes |
|
5.8 | see ranking |
| steering and suspension |
|
2.3 | see ranking |
| drive system |
|
0.6 | see ranking |
| fuel and exhaust |
|
1.7 | see ranking |
| tyres and wheels |
|
1.2 | see ranking |
Top failure groups aggregated across every SUN model, 2005–2025. "% of tests" = share of the make's tests recording at least one defect in that group.
SUN 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.