These MOT failure patterns show up more often on this registration year than on similar cars of the same class, age, and mileage.
Shares below are measured across the 790 failed first attempts in 2025 that the age-and-mileage comparison can be computed on.
Standout: Rear fog lamp (rear) — 20.6% of this year's failed first attempts
Recorded on 163 of those tests. It tops the table on elevation — about 25× more often than on similar cars of the same age and mileage. On this year it is also the commonest failure, so it answers both questions at once. The full ranked list is in the table below.
| Fault pattern | Location | Failures | vs similar cars | Share of fails | Confidence |
|---|---|---|---|---|---|
|
Headlamp levelling device (front)
Lamps, reflectors and electrical equipment > Headlamps > Headlamp levelling device
|
Front | 22 | ×27 | 2.8% | Possible |
|
Rear fog lamp (rear)
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Rear | 163 | ×25 | 20.6% | Strong |
|
SRS malfunction indicator lamp
Seat belts and supplementary restraint systems > SRS malfunction indicator lamp
|
Any | 21 | ×2.8 | 2.7% | Possible |
|
Coil spring (rear)
Suspension > Springs > Coil springs > Coil spring
|
Rear | 114 | ×2.7 | 14.4% | Possible |
|
Malfunction indicator lamp
Noise, emissions and leaks > Exhaust emissions > Compression ignition > Malfunction indicator lamp
|
Any | 67 | ×2.5 | 8.5% | Possible |
|
Coil spring (front)
Suspension > Springs > Coil springs > Coil spring
|
Front | 89 | ×2.3 | 11.3% | Possible |
Only patterns that clear minimum sample and elevation thresholds are shown (at least 20 failures and about 2.0× more often than similar cars).