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 33,276 of 33,304 failed first attempts (99.9%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Swivel pins and bushes (rear) — 4.1% of this year's failed first attempts
Recorded on 1,358 of those tests. It tops the table on elevation — about 32× 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 |
|---|---|---|---|---|---|
|
Swivel pins and bushes (rear)
Suspension > Axles > Swivel pins and bushes
|
Rear | 1,358 | ×32 | 4.1% | Strong |
|
Component mounting prescribed areas (rear)
Suspension > Component mounting prescribed areas
|
Rear | 1,282 | ×3.7 | 3.9% | Likely |
|
Exhaust system (rear)
Body, chassis, structure > Exhaust system
|
Rear | 1,614 | ×3.7 | 4.9% | Likely |
|
Ball joint (front)
Suspension > Suspension arms > Ball joint
|
Front | 6,780 | ×3.5 | 20.4% | Likely |
|
Emissions not tested
Noise, emissions and leaks > Exhaust emissions > Spark ignition > Emissions not tested
|
Any | 849 | ×2.4 | 2.6% | Possible |
|
Catalyst emissions
Noise, emissions and leaks > Exhaust emissions > Spark ignition > Catalyst emissions
|
Any | 2,111 | ×2.3 | 6.3% | Possible |
|
Individual direction indicators (rear)
Lamps, reflectors and electrical equipment > Direction indicators > Flashing type > Individual direction indicators
|
Rear | 1,371 | ×2.0 | 4.1% | 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).