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 330 failed first attempts in 2025 that the age-and-mileage comparison can be computed on.
Standout: Component mounting prescribed areas (front) — 17.3% of this year's failed first attempts
Recorded on 57 of those tests. It tops the table on elevation — about 4.2× 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.
No patterns met the strongest callout thresholds on this page; showing the highest-lift rows that still cleared the display floors.
| Fault pattern | Location | Failures | vs similar cars | Share of fails | Confidence |
|---|---|---|---|---|---|
|
Component mounting prescribed areas (front)
Suspension > Component mounting prescribed areas
|
Front | 57 | ×4.2 | 17.3% | Likely |
|
Prescribed areas (front)
Seat belts and supplementary restraint systems > Seat belts > Prescribed areas
|
Front | 20 | ×3.7 | 6.1% | Possible |
|
Chassis condition (front)
Body, chassis, structure > Chassis > Chassis condition
|
Front | 33 | ×3.3 | 10.0% | Likely |
|
Integral vehicle structure condition (front)
Body, chassis, structure > Integral vehicle structure > Integral vehicle structure condition
|
Front | 21 | ×2.8 | 6.4% | Possible |
|
Chassis condition (rear)
Body, chassis, structure > Chassis > Chassis condition
|
Rear | 25 | ×2.4 | 7.6% | Possible |
|
Stop lamp (rear)
Lamps, reflectors and electrical equipment > Stop lamp
|
Rear | 25 | ×2.2 | 7.6% | Possible |
|
Service brake imbalance (rear)
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake imbalance
|
Rear | 31 | ×2.1 | 9.4% | Possible |
|
Component mounting prescribed areas (rear)
Suspension > Component mounting prescribed areas
|
Rear | 60 | ×2.0 | 18.2% | 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).