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 1,793 of 1,794 failed first attempts (99.9%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Coil spring (front) — 21.6% of this year's failed first attempts
Recorded on 387 of those tests. It tops the table on elevation — about 10× 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 |
|---|---|---|---|---|---|
|
Pins and bushes (rear)
Suspension > Anti-roll bars > Pins and bushes
|
Rear | 63 | ×21 | 3.5% | Likely |
|
Service brake imbalance (rear)
Brakes > Brake performance > Service brake performance > Rbt > Service brake imbalance
|
Rear | 37 | ×14 | 2.1% | Likely |
|
Coil spring (front)
Suspension > Springs > Coil springs > Coil spring
|
Front | 387 | ×10 | 21.6% | Strong |
|
Coil spring (rear)
Suspension > Springs > Coil springs > Coil spring
|
Rear | 391 | ×9.0 | 21.8% | Strong |
|
Service brake imbalance (rear)
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake imbalance
|
Rear | 40 | ×8.7 | 2.2% | Likely |
|
Rear fog lamp
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Any | 41 | ×3.3 | 2.3% | Likely |
|
Service brake performance (rear)
Brakes > Brake performance > Service brake performance > Rbt > Service brake performance
|
Rear | 44 | ×2.6 | 2.5% | Possible |
|
Position lamp (rear)
Lamps, reflectors and electrical equipment > Position lamps > Position lamp
|
Rear | 51 | ×2.2 | 2.8% | Possible |
|
Rbt (sp)
Brakes > Brake performance > Parking brake efficiency (sp) > Rbt (sp)
|
Any | 67 | ×2.2 | 3.7% | 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).