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 416 of 419 failed first attempts (99.3%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Chassis condition (rear) — 18.0% of this year's failed first attempts
Recorded on 75 of those tests. It tops the table on elevation — about 11× more often than on similar cars of the same age and mileage. On this year it is also the commonest failure, so it answers both questions at once. 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 (rear)
Body, chassis, structure > Chassis > Chassis condition
|
Rear | 75 | ×11 | 18.0% | Likely |
|
Service brake imbalance (rear)
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake imbalance
|
Rear | 39 | ×6.4 | 9.4% | Likely |
|
Service brake performance
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake performance
|
Any | 23 | ×6.2 | 5.5% | Possible |
|
Service brake performance (rear)
Brakes > Brake performance > Service brake performance > Rbt > Service brake performance
|
Rear | 46 | ×4.1 | 11.1% | Likely |
|
Wheel bearings (front)
Suspension > Wheel bearings
|
Front | 28 | ×3.5 | 6.7% | Possible |
|
Component mounting prescribed areas (rear)
Suspension > Component mounting prescribed areas
|
Rear | 59 | ×2.5 | 14.2% | Possible |
|
Visibility — Washers
Visibility > Washers
|
Any | 56 | ×2.2 | 13.5% | Possible |
|
Exhaust system
Body, chassis, structure > Exhaust system
|
Any | 26 | ×2.1 | 6.2% | 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).