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 992 failed first attempts in 2025 that the age-and-mileage comparison can be computed on.
Standout: Coil spring (rear) — 15.3% of this year's failed first attempts
Recorded on 152 of those tests. It tops the table on elevation — about 3.5× 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.
No patterns met the strongest callout thresholds on this page; showing the highest-lift rows that still cleared the display floors.
| Fault pattern | Location | Failures | vs similar cars | Share of fails | Confidence |
|---|---|---|---|---|---|
|
Coil spring (rear)
Suspension > Springs > Coil springs > Coil spring
|
Rear | 152 | ×3.5 | 15.3% | Likely |
|
Position lamp (rear)
Lamps, reflectors and electrical equipment > Position lamps > Position lamp
|
Rear | 63 | ×2.7 | 6.4% | Possible |
|
Seat belts — Condition (rear)
Seat belts and supplementary restraint systems > Seat belts > Condition
|
Rear | 22 | ×2.6 | 2.2% | Possible |
|
Side repeaters
Lamps, reflectors and electrical equipment > Direction indicators > Flashing type > Side repeaters
|
Any | 42 | ×2.5 | 4.2% | 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).