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 730 of 733 failed first attempts (99.6%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Seat belts — Condition (rear) — 4.4% of this year's failed first attempts
Recorded on 32 of those tests. It tops the table on elevation — about 5.0× more often than on similar cars of the same age and mileage. That is what makes it unusual for its class, which is a different question from what is most likely to fail; the buying checklist ranks by that. 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 |
|---|---|---|---|---|---|
|
Seat belts — Condition (rear)
Seat belts and supplementary restraint systems > Seat belts > Condition
|
Rear | 32 | ×5.0 | 4.4% | Likely |
|
Ball joint (front)
Suspension > Suspension arms > Ball joint
|
Front | 95 | ×2.9 | 13.0% | Possible |
|
Parking brake performance (rear)
Brakes > Brake performance > Parking brake performance > Rbt > Parking brake performance
|
Rear | 20 | ×2.6 | 2.7% | Possible |
|
Wheel bearings (rear)
Suspension > Wheel bearings
|
Rear | 26 | ×2.6 | 3.6% | Possible |
|
Coil spring (front)
Suspension > Springs > Coil springs > Coil spring
|
Front | 85 | ×2.5 | 11.6% | Possible |
|
Position lamp (rear)
Lamps, reflectors and electrical equipment > Position lamps > Position lamp
|
Rear | 53 | ×2.4 | 7.3% | Possible |
|
Rigid brake pipes (front)
Brakes > Rigid brake pipes
|
Front | 29 | ×2.1 | 4.0% | 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).