MOT defects explained
The advisories
Tyre tread worn close to the legal limit
noted on 15.8 per 100 MOTs
4.6% failed next MOT
Brake disc worn, pitted or scored
noted on 8.9 per 100 MOTs
0.9% failed next MOT
Tyre slightly damaged, cracking or perishing
noted on 8.8 per 100 MOTs
2.0% failed next MOT
Brake pad wearing thin
noted on 7.6 per 100 MOTs
6.4% failed next MOT
Suspension arm pin or bush worn
noted on 5.5 per 100 MOTs
6.6% failed next MOT
Engine oil leak, but not excessive
noted on 5.1 per 100 MOTs
1.0% failed next MOT
Rigid brake pipe corroded
noted on 3.7 per 100 MOTs
7.0% failed next MOT
Shock absorber has light misting of oil
noted on 3.1 per 100 MOTs
7.5% failed next MOT
Sub-frame corroded but not seriously weakened
noted on 2.6 per 100 MOTs
1.9% failed next MOT
Track rod end ball joint has slight play
noted on 1.1 per 100 MOTs
16.4% failed next MOT
| Advisory | Noted on (per 100 MOTs, 2025) | Failed on the same item next MOT |
|---|---|---|
| Tyre tread worn close to the legal limit | 15.8 | 4.6% |
| Brake disc worn, pitted or scored | 8.9 | 0.9% |
| Tyre slightly damaged, cracking or perishing | 8.8 | 2.0% |
| Brake pad wearing thin | 7.6 | 6.4% |
| Suspension arm pin or bush worn | 5.5 | 6.6% |
| Engine oil leak, but not excessive | 5.1 | 1.0% |
| Rigid brake pipe corroded | 3.7 | 7.0% |
| Shock absorber has light misting of oil | 3.1 | 7.5% |
| Sub-frame corroded but not seriously weakened | 2.6 | 1.9% |
| Track rod end ball joint has slight play | 1.1 | 16.4% |