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 6,135 of 6,193 failed first attempts (99.1%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Leaf spring (rear) — 10.7% of this year's failed first attempts
Recorded on 657 of those tests. It tops the table on elevation — about 140× 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 |
|---|---|---|---|---|---|
|
Leaf spring (rear)
Suspension > Springs > Leaf springs > Leaf spring
|
Rear | 657 | ×140 | 10.7% | Strong |
|
Chassis condition (front)
Body, chassis, structure > Chassis > Chassis condition
|
Front | 312 | ×21 | 5.1% | Strong |
|
Spring mounting prescribed areas (rear)
Suspension > Springs > Spring mounting prescribed areas
|
Rear | 146 | ×19 | 2.4% | Strong |
|
Integral vehicle structure condition (front)
Body, chassis, structure > Integral vehicle structure > Integral vehicle structure condition
|
Front | 313 | ×19 | 5.1% | Strong |
|
Prescribed areas (front)
Seat belts and supplementary restraint systems > Seat belts > Prescribed areas
|
Front | 271 | ×16 | 4.4% | Strong |
|
Chassis condition (rear)
Body, chassis, structure > Chassis > Chassis condition
|
Rear | 408 | ×13 | 6.7% | Strong |
|
Integral vehicle structure condition (rear)
Body, chassis, structure > Integral vehicle structure > Integral vehicle structure condition
|
Rear | 277 | ×12 | 4.5% | Strong |
|
Component mounting prescribed areas (front)
Suspension > Component mounting prescribed areas
|
Front | 272 | ×11 | 4.4% | Strong |
|
Component mounting prescribed areas (rear)
Suspension > Component mounting prescribed areas
|
Rear | 1,030 | ×9.5 | 16.8% | Strong |
|
Rigid brake pipes (front)
Brakes > Rigid brake pipes
|
Front | 473 | ×9.4 | 7.7% | Strong |
Only patterns that clear minimum sample and elevation thresholds are shown (at least 20 failures and about 2.0× more often than similar cars).