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 3,992 failed first attempts in 2025 that the age-and-mileage comparison can be computed on.
Standout: Service brake performance — 3.2% of this year's failed first attempts
Recorded on 126 of those tests. It tops the table on elevation — about 6.4× 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.
| Fault pattern | Location | Failures | vs similar cars | Share of fails | Confidence |
|---|---|---|---|---|---|
|
Service brake performance
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake performance
|
Any | 126 | ×6.4 | 3.2% | Strong |
|
Hand lever
Brakes > Service brake pedal or hand lever > Hand lever
|
Any | 86 | ×4.9 | 2.2% | Likely |
|
Rbt (sp)
Brakes > Brake performance > Parking brake efficiency (sp) > Rbt (sp)
|
Any | 797 | ×4.7 | 20.0% | Likely |
|
Pins and bushes (rear)
Suspension > Suspension arms > Pins and bushes
|
Rear | 117 | ×4.3 | 2.9% | Likely |
|
Parking brake control — Lever
Brakes > Parking brake control > Lever
|
Any | 127 | ×4.1 | 3.2% | Likely |
|
Parking brake performance (rear)
Brakes > Brake performance > Parking brake performance > Rbt > Parking brake performance
|
Rear | 135 | ×3.7 | 3.4% | Likely |
|
Service brake performance (rear)
Brakes > Brake performance > Service brake performance > Rbt > Service brake performance
|
Rear | 325 | ×3.6 | 8.1% | Likely |
|
Side repeaters
Lamps, reflectors and electrical equipment > Direction indicators > Flashing type > Side repeaters
|
Any | 151 | ×2.7 | 3.8% | Possible |
|
Service brake performance (front)
Brakes > Brake performance > Service brake performance > Rbt > Service brake performance
|
Front | 127 | ×2.1 | 3.2% | 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).