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 25,786 of 25,818 failed first attempts (99.9%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Anti-roll bars — Linkage (rear) — 3.2% of this year's failed first attempts
Recorded on 827 of those tests. It tops the table on elevation — about 28× 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 |
|---|---|---|---|---|---|
|
Anti-roll bars — Linkage (rear)
Suspension > Anti-roll bars > Linkage
|
Rear | 827 | ×28 | 3.2% | Strong |
|
Electrical equipment — Horn
Lamps, reflectors and electrical equipment > Electrical equipment > Horn
|
Any | 1,373 | ×5.5 | 5.3% | Strong |
|
Individual direction indicators (rear)
Lamps, reflectors and electrical equipment > Direction indicators > Flashing type > Individual direction indicators
|
Rear | 1,329 | ×4.4 | 5.2% | Likely |
|
Coil spring (front)
Suspension > Springs > Coil springs > Coil spring
|
Front | 4,447 | ×2.4 | 17.2% | Possible |
| Diesel emissions test (compression-ignition rules for vehicles from 01/07/2008) | Any | 749 | ×2.3 | 2.9% | Possible |
|
Side repeaters
Lamps, reflectors and electrical equipment > Direction indicators > Flashing type > Side repeaters
|
Any | 847 | ×2.2 | 3.3% | 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).