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 685 failed first attempts in 2025 that the age-and-mileage comparison can be computed on.
Standout: Position lamp (front) — 28.2% of this year's failed first attempts
Recorded on 193 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 |
|---|---|---|---|---|---|
|
Individual direction indicators (front)
Lamps, reflectors and electrical equipment > Direction indicators > Flashing type > Individual direction indicators
|
Front | 29 | ×18 | 4.2% | Possible |
|
Position lamp (front)
Lamps, reflectors and electrical equipment > Position lamps > Position lamp
|
Front | 193 | ×10 | 28.2% | Strong |
|
Individual direction indicators (rear)
Lamps, reflectors and electrical equipment > Direction indicators > Flashing type > Individual direction indicators
|
Rear | 40 | ×9.5 | 5.8% | Likely |
|
Electronic stability control
Brakes > ABS / EBS / ESC > Electronic stability control
|
Any | 27 | ×6.9 | 3.9% | Possible |
|
Ball joint (front)
Suspension > Suspension arms > Ball joint
|
Front | 109 | ×5.4 | 15.9% | Strong |
|
Linkage ball joints (front)
Suspension > Anti-roll bars > Linkage ball joints
|
Front | 34 | ×4.5 | 5.0% | Likely |
|
Registration plate lamp(s) (rear)
Lamps, reflectors and electrical equipment > Registration plate lamp(s)
|
Rear | 76 | ×4.3 | 11.1% | Likely |
|
Coil spring (front)
Suspension > Springs > Coil springs > Coil spring
|
Front | 76 | ×3.0 | 11.1% | Likely |
|
Stop lamp (rear)
Lamps, reflectors and electrical equipment > Stop lamp
|
Rear | 42 | ×2.7 | 6.1% | Possible |
|
Headlamp (front)
Lamps, reflectors and electrical equipment > Headlamps > Headlamp
|
Front | 51 | ×2.3 | 7.4% | 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).