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 1,293 failed first attempts in 2025 that the age-and-mileage comparison can be computed on.
Standout: Suspension arm (rear) — 10.4% of this year's failed first attempts
Recorded on 135 of those tests. It tops the table on elevation — about 14× 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 |
|---|---|---|---|---|---|
|
Hydraulic brake callipers (rear)
Brakes > Brake actuators (including spring brakes or hydraulic cylinders) > Hydraulic brake callipers
|
Rear | 48 | ×20 | 3.7% | Likely |
|
Suspension arm (rear)
Suspension > Suspension arms > Suspension arm
|
Rear | 135 | ×14 | 10.4% | Strong |
|
Prescribed areas (front)
Seat belts and supplementary restraint systems > Seat belts > Prescribed areas
|
Front | 38 | ×9.8 | 2.9% | Likely |
| Diesel emissions test (compression-ignition rules for vehicles from 01/07/2008) | Any | 144 | ×5.5 | 11.1% | Strong |
|
Wheel bearings (rear)
Suspension > Wheel bearings
|
Rear | 53 | ×5.0 | 4.1% | Likely |
|
Component mounting prescribed areas (rear)
Suspension > Component mounting prescribed areas
|
Rear | 172 | ×4.7 | 13.3% | Likely |
|
Linkage ball joints (rear)
Suspension > Anti-roll bars > Linkage ball joints
|
Rear | 28 | ×4.5 | 2.2% | Possible |
|
Integral vehicle structure condition (rear)
Body, chassis, structure > Integral vehicle structure > Integral vehicle structure condition
|
Rear | 28 | ×3.7 | 2.2% | Possible |
|
Pins and bushes (rear)
Suspension > Suspension arms > Pins and bushes
|
Rear | 46 | ×3.7 | 3.6% | Likely |
|
Chassis condition (rear)
Body, chassis, structure > Chassis > Chassis condition
|
Rear | 29 | ×3.0 | 2.2% | 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).