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 1,237 failed first attempts in 2025 that the age-and-mileage comparison can be computed on.
Standout: Rigid brake pipes (rear) — 9.1% of this year's failed first attempts
Recorded on 113 of those tests. It tops the table on elevation — about 8.2× 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.
| Fault pattern | Location | Failures | vs similar cars | Share of fails | Confidence |
|---|---|---|---|---|---|
|
Rigid brake pipes (rear)
Brakes > Rigid brake pipes
|
Rear | 113 | ×8.2 | 9.1% | Strong |
|
Brake performance not tested
Brakes > Brake performance > Brake performance not tested
|
Any | 37 | ×6.4 | 3.0% | Likely |
|
SRS malfunction indicator lamp
Seat belts and supplementary restraint systems > SRS malfunction indicator lamp
|
Any | 108 | ×5.7 | 8.7% | Strong |
|
Registration plates (rear)
Identification of the vehicle > Registration plates
|
Rear | 36 | ×5.2 | 2.9% | Likely |
|
Registration plates (front)
Identification of the vehicle > Registration plates
|
Front | 34 | ×4.6 | 2.7% | Likely |
|
Ball joint dust cover (front)
Suspension > Suspension arms > Ball joint dust cover
|
Front | 75 | ×3.5 | 6.1% | Likely |
|
Wheel bearings (front)
Suspension > Wheel bearings
|
Front | 42 | ×3.3 | 3.4% | Likely |
|
Rear fog lamp
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Any | 28 | ×2.0 | 2.3% | 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).