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 1,733 of 1,746 failed first attempts (99.3%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Prescribed areas (front) — 6.6% of this year's failed first attempts
Recorded on 115 of those tests. It tops the table on elevation — about 11× 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 |
|---|---|---|---|---|---|
|
Prescribed areas (front)
Seat belts and supplementary restraint systems > Seat belts > Prescribed areas
|
Front | 115 | ×11 | 6.6% | Strong |
|
Integral vehicle structure condition (front)
Body, chassis, structure > Integral vehicle structure > Integral vehicle structure condition
|
Front | 60 | ×8.5 | 3.5% | Likely |
|
Steering rack (front)
Steering > Steering gear > Steering rack
|
Front | 55 | ×5.9 | 3.2% | Likely |
|
Component mounting prescribed areas (front)
Suspension > Component mounting prescribed areas
|
Front | 35 | ×2.6 | 2.0% | Possible |
|
Service brake imbalance (rear)
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake imbalance
|
Rear | 51 | ×2.4 | 2.9% | Possible |
|
Drive shafts — Joints (front)
Body, chassis, structure > Transmission > Drive shafts > Joints
|
Front | 264 | ×2.3 | 15.2% | Possible |
|
Ball joint (front)
Suspension > Anti-roll bars > Ball joint
|
Front | 36 | ×2.3 | 2.1% | Possible |
|
Wheel bearings (front)
Suspension > Wheel bearings
|
Front | 50 | ×2.1 | 2.9% | Possible |
| Diesel emissions test (pre-reg turbo rules before 01/07/2008) | Any | 49 | ×2.0 | 2.8% | 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).