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 572 of 582 failed first attempts (98.3%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Hazard warning — Switch — 5.1% of this year's failed first attempts
Recorded on 29 of those tests. It tops the table on elevation — about 16× 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.
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 |
|---|---|---|---|---|---|
|
Hazard warning — Switch
Lamps, reflectors and electrical equipment > Hazard warning > Switch
|
Any | 29 | ×16 | 5.1% | Possible |
|
Service brake performance
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake performance
|
Any | 45 | ×3.7 | 7.9% | Likely |
|
Component mounting prescribed areas (front)
Suspension > Component mounting prescribed areas
|
Front | 38 | ×3.7 | 6.6% | Likely |
|
Chassis condition (front)
Body, chassis, structure > Chassis > Chassis condition
|
Front | 26 | ×3.4 | 4.5% | Possible |
|
Shock absorbers (front)
Suspension > Shock absorbers
|
Front | 37 | ×3.2 | 6.5% | Likely |
|
Visibility — Washers
Visibility > Washers
|
Any | 92 | ×2.7 | 16.1% | Possible |
|
Ball joint (front)
Suspension > Suspension arms > Ball joint
|
Front | 99 | ×2.6 | 17.3% | Possible |
|
Parking brake performance
Brakes > Brake performance > Parking brake performance > Rbt > Parking brake performance
|
Any | 23 | ×2.4 | 4.0% | Possible |
|
Electrical equipment — Horn
Lamps, reflectors and electrical equipment > Electrical equipment > Horn
|
Any | 27 | ×2.3 | 4.7% | Possible |
|
SRS malfunction indicator lamp
Seat belts and supplementary restraint systems > SRS malfunction indicator lamp
|
Any | 45 | ×2.3 | 7.9% | 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).