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 2,018 failed first attempts in 2025 that the age-and-mileage comparison can be computed on.
Standout: Leaf spring (rear) — 6.0% of this year's failed first attempts
Recorded on 121 of those tests. It tops the table on elevation — about 94× 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 |
|---|---|---|---|---|---|
|
Leaf spring (rear)
Suspension > Springs > Leaf springs > Leaf spring
|
Rear | 121 | ×94 | 6.0% | Strong |
|
Rigid brake pipes (front)
Brakes > Rigid brake pipes
|
Front | 162 | ×16 | 8.0% | Strong |
|
Rigid brake pipes (rear)
Brakes > Rigid brake pipes
|
Rear | 202 | ×14 | 10.0% | Strong |
|
Rear fog lamp (rear)
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Rear | 278 | ×14 | 13.8% | Strong |
|
SRS malfunction indicator lamp
Seat belts and supplementary restraint systems > SRS malfunction indicator lamp
|
Any | 94 | ×4.2 | 4.7% | Likely |
| Diesel emissions test (compression-ignition rules for vehicles from 01/01/2014) | Any | 101 | ×3.6 | 5.0% | Likely |
|
Position lamp (front)
Lamps, reflectors and electrical equipment > Position lamps > Position lamp
|
Front | 330 | ×3.2 | 16.4% | Likely |
|
Position lamp (rear)
Lamps, reflectors and electrical equipment > Position lamps > Position lamp
|
Rear | 79 | ×2.8 | 3.9% | Possible |
|
Wheel bearings (front)
Suspension > Wheel bearings
|
Front | 45 | ×2.6 | 2.2% | Possible |
|
Service brake performance (front)
Brakes > Brake performance > Service brake performance > Rbt > Service brake performance
|
Front | 62 | ×2.5 | 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).