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 1,507 of 1,510 failed first attempts (99.8%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Leaf spring (rear) — 7.6% of this year's failed first attempts
Recorded on 114 of those tests. It tops the table on elevation — about 54× 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 | 114 | ×54 | 7.6% | Strong |
|
Rear fog lamp (rear)
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Rear | 153 | ×7.0 | 10.2% | Strong |
|
Rigid brake pipes (front)
Brakes > Rigid brake pipes
|
Front | 114 | ×5.9 | 7.6% | Strong |
|
Pins and bushes (front)
Suspension > Anti-roll bars > Pins and bushes
|
Front | 31 | ×5.1 | 2.1% | Likely |
|
Chassis condition (rear)
Body, chassis, structure > Chassis > Chassis condition
|
Rear | 90 | ×5.0 | 6.0% | Likely |
|
Wheel bearings (front)
Suspension > Wheel bearings
|
Front | 80 | ×3.4 | 5.3% | Likely |
|
Rigid brake pipes (rear)
Brakes > Rigid brake pipes
|
Rear | 120 | ×2.9 | 8.0% | Possible |
|
Malfunction indicator lamp
Noise, emissions and leaks > Exhaust emissions > Compression ignition > Malfunction indicator lamp
|
Any | 59 | ×2.8 | 3.9% | Possible |
|
Service brake performance (front)
Brakes > Brake performance > Service brake performance > Rbt > Service brake performance
|
Front | 72 | ×2.6 | 4.8% | Possible |
|
Shock absorbers (front)
Suspension > Shock absorbers
|
Front | 90 | ×2.4 | 6.0% | 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).