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 880 failed first attempts in 2025 that the age-and-mileage comparison can be computed on.
Standout: Coil spring (rear) — 29.0% of this year's failed first attempts
Recorded on 255 of those tests. It tops the table on elevation — about 19× 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 |
|---|---|---|---|---|---|
|
Coil spring (rear)
Suspension > Springs > Coil springs > Coil spring
|
Rear | 255 | ×19 | 29.0% | Strong |
|
Parking brake performance (rear)
Brakes > Brake performance > Parking brake performance > Rbt > Parking brake performance
|
Rear | 21 | ×12 | 2.4% | Possible |
|
Rear fog lamp
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Any | 32 | ×5.3 | 3.6% | Likely |
|
Rbt (sp)
Brakes > Brake performance > Parking brake efficiency (sp) > Rbt (sp)
|
Any | 49 | ×4.0 | 5.6% | Likely |
|
Position lamp (rear)
Lamps, reflectors and electrical equipment > Position lamps > Position lamp
|
Rear | 31 | ×3.5 | 3.5% | Likely |
|
Malfunction indicator lamp
Noise, emissions and leaks > Exhaust emissions > Compression ignition > Malfunction indicator lamp
|
Any | 70 | ×2.3 | 8.0% | Possible |
|
Stop lamp (rear)
Lamps, reflectors and electrical equipment > Stop lamp
|
Rear | 27 | ×2.1 | 3.1% | 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).