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 1,766 of 1,776 failed first attempts (99.4%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Sub-frame (front) — 6.7% of this year's failed first attempts
Recorded on 119 of those tests. It tops the table on elevation — about 18× 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 |
|---|---|---|---|---|---|
|
Sub-frame (front)
Suspension > Sub-frames > Sub-frame
|
Front | 119 | ×18 | 6.7% | Strong |
|
Individual direction indicators (front)
Lamps, reflectors and electrical equipment > Direction indicators > Flashing type > Individual direction indicators
|
Front | 88 | ×8.8 | 5.0% | Likely |
|
Exhaust system (front)
Body, chassis, structure > Exhaust system
|
Front | 89 | ×5.7 | 5.0% | Likely |
|
Individual direction indicators (rear)
Lamps, reflectors and electrical equipment > Direction indicators > Flashing type > Individual direction indicators
|
Rear | 108 | ×5.0 | 6.1% | Likely |
|
Emissions not tested
Noise, emissions and leaks > Exhaust emissions > Spark ignition > Emissions not tested
|
Any | 72 | ×4.1 | 4.1% | Likely |
|
Parking brake performance (rear)
Brakes > Brake performance > Parking brake performance > Rbt > Parking brake performance
|
Rear | 41 | ×3.5 | 2.3% | Likely |
|
Catalyst emissions
Noise, emissions and leaks > Exhaust emissions > Spark ignition > Catalyst emissions
|
Any | 185 | ×3.5 | 10.5% | Likely |
|
Position lamp (rear)
Lamps, reflectors and electrical equipment > Position lamps > Position lamp
|
Rear | 88 | ×3.0 | 5.0% | Possible |
|
Rbt (sp)
Brakes > Brake performance > Parking brake efficiency (sp) > Rbt (sp)
|
Any | 186 | ×2.8 | 10.5% | Possible |
|
Track rod end (front)
Steering > Steering linkage components > Track rod end
|
Front | 175 | ×2.0 | 9.9% | 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).