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 279 failed first attempts in 2025 that the age-and-mileage comparison can be computed on.
Standout: Steering rack — 8.2% of this year's failed first attempts
Recorded on 23 of those tests. It tops the table on elevation — about 3.9× more often than on similar cars of the same age and mileage. 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 |
|---|---|---|---|---|---|
|
Steering rack
Steering > Steering gear > Steering rack
|
Any | 23 | ×3.9 | 8.2% | Possible |
|
Electrical equipment — Horn
Lamps, reflectors and electrical equipment > Electrical equipment > Horn
|
Any | 31 | ×3.6 | 11.1% | Likely |
|
Service brake performance
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake performance
|
Any | 20 | ×2.9 | 7.2% | Possible |
|
Service brake imbalance (rear)
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake imbalance
|
Rear | 20 | ×2.4 | 7.2% | 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).