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 2,432 of 2,437 failed first attempts (99.8%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Coil spring (rear) — 26.8% of this year's failed first attempts
Recorded on 651 of those tests. It tops the table on elevation — about 6.1× more often than on similar cars of the same age and mileage. On this year it is also the commonest failure, so it answers both questions at once. The full ranked list is in the table below.
| Fault pattern | Location | Failures | vs similar cars | Share of fails | Confidence |
|---|---|---|---|---|---|
|
Coil spring (rear)
Suspension > Springs > Coil springs > Coil spring
|
Rear | 651 | ×6.1 | 26.8% | Strong |
|
Service brake imbalance (rear)
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake imbalance
|
Rear | 50 | ×3.1 | 2.1% | Likely |
|
Ball joint (front)
Suspension > Suspension arms > Ball joint
|
Front | 442 | ×2.6 | 18.2% | Possible |
|
Linkage ball joints (front)
Suspension > Anti-roll bars > Linkage ball joints
|
Front | 122 | ×2.5 | 5.0% | Possible |
|
Ball joint dust cover (front)
Suspension > Anti-roll bars > Ball joint dust cover
|
Front | 71 | ×2.5 | 2.9% | Possible |
|
Service brake performance (rear)
Brakes > Brake performance > Service brake performance > Rbt > Service brake performance
|
Rear | 119 | ×2.2 | 4.9% | Possible |
|
Coil spring (front)
Suspension > Springs > Coil springs > Coil spring
|
Front | 408 | ×2.1 | 16.8% | Possible |
|
Linkage ball joint dust cover (front)
Suspension > Anti-roll bars > Linkage ball joint dust cover
|
Front | 158 | ×2.1 | 6.5% | Possible |
|
Individual direction indicators (rear)
Lamps, reflectors and electrical equipment > Direction indicators > Flashing type > Individual direction indicators
|
Rear | 66 | ×2.1 | 2.7% | 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).