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 414 of 415 failed first attempts (99.8%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Chassis condition (front) — 12.3% of this year's failed first attempts
Recorded on 51 of those tests. It tops the table on elevation — about 7.1× 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 |
|---|---|---|---|---|---|
|
Chassis condition (front)
Body, chassis, structure > Chassis > Chassis condition
|
Front | 51 | ×7.1 | 12.3% | Likely |
|
Component mounting prescribed areas (front)
Suspension > Component mounting prescribed areas
|
Front | 60 | ×5.7 | 14.5% | Likely |
|
Integral vehicle structure condition (front)
Body, chassis, structure > Integral vehicle structure > Integral vehicle structure condition
|
Front | 31 | ×4.9 | 7.5% | Likely |
|
Chassis condition (rear)
Body, chassis, structure > Chassis > Chassis condition
|
Rear | 43 | ×3.9 | 10.4% | Likely |
| Diesel emissions test (pre-reg turbo rules before 01/07/2008) | Any | 22 | ×3.8 | 5.3% | Possible |
|
Integral vehicle structure condition (rear)
Body, chassis, structure > Integral vehicle structure > Integral vehicle structure condition
|
Rear | 24 | ×3.3 | 5.8% | Possible |
|
Electrical equipment — Horn
Lamps, reflectors and electrical equipment > Electrical equipment > Horn
|
Any | 34 | ×3.1 | 8.2% | Likely |
|
Service brake imbalance (rear)
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake imbalance
|
Rear | 33 | ×2.5 | 8.0% | Possible |
|
Position lamp (rear)
Lamps, reflectors and electrical equipment > Position lamps > Position lamp
|
Rear | 34 | ×2.3 | 8.2% | Possible |
|
Component mounting prescribed areas (rear)
Suspension > Component mounting prescribed areas
|
Rear | 81 | ×2.2 | 19.6% | 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).