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 1,590 failed first attempts in 2025 that the age-and-mileage comparison can be computed on.
Standout: Leaf spring (rear) — 6.9% of this year's failed first attempts
Recorded on 109 of those tests. It tops the table on elevation — about 23× 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 | 109 | ×23 | 6.9% | Strong |
|
Rear fog lamp (rear)
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Rear | 257 | ×12 | 16.2% | Strong |
|
Chassis condition (rear)
Body, chassis, structure > Chassis > Chassis condition
|
Rear | 67 | ×10 | 4.2% | Likely |
|
Rigid brake pipes (front)
Brakes > Rigid brake pipes
|
Front | 117 | ×8.3 | 7.4% | Strong |
|
Rigid brake pipes (rear)
Brakes > Rigid brake pipes
|
Rear | 146 | ×6.0 | 9.2% | Strong |
|
Ball joint (front)
Suspension > Other suspension component > Ball joint
|
Front | 33 | ×5.3 | 2.1% | Likely |
|
Ball joint dust cover (front)
Suspension > Suspension arms > Ball joint dust cover
|
Front | 95 | ×3.5 | 6.0% | Likely |
|
Wheel bearings (front)
Suspension > Wheel bearings
|
Front | 74 | ×3.3 | 4.7% | Likely |
|
Component mounting prescribed areas (rear)
Suspension > Component mounting prescribed areas
|
Rear | 59 | ×2.5 | 3.7% | Possible |
|
Service brake performance (front)
Brakes > Brake performance > Service brake performance > Rbt > Service brake performance
|
Front | 62 | ×2.5 | 3.9% | 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).