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 1,294 of 1,296 failed first attempts (99.8%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Leaf spring (rear) — 7.3% of this year's failed first attempts
Recorded on 94 of those tests. It tops the table on elevation — about 91× 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.
No patterns met the strongest callout thresholds on this page; showing the highest-lift rows that still cleared the display floors.
| Fault pattern | Location | Failures | vs similar cars | Share of fails | Confidence |
|---|---|---|---|---|---|
|
Leaf spring (rear)
Suspension > Springs > Leaf springs > Leaf spring
|
Rear | 94 | ×91 | 7.3% | Likely |
|
Component mounting prescribed areas (rear)
Suspension > Component mounting prescribed areas
|
Rear | 39 | ×69 | 3.0% | Likely |
|
Rigid brake pipes (rear)
Brakes > Rigid brake pipes
|
Rear | 44 | ×5.4 | 3.4% | Likely |
|
Service brake performance (front)
Brakes > Brake performance > Service brake performance > Rbt > Service brake performance
|
Front | 59 | ×4.3 | 4.6% | Likely |
|
Parking brake control — Lever
Brakes > Parking brake control > Lever
|
Any | 37 | ×4.3 | 2.9% | Likely |
|
Rear fog lamp (rear)
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Rear | 44 | ×3.6 | 3.4% | Likely |
|
Parking brake performance
Brakes > Brake performance > Parking brake performance > Rbt > Parking brake performance
|
Any | 27 | ×3.4 | 2.1% | Possible |
|
Rbt (sp)
Brakes > Brake performance > Parking brake efficiency (sp) > Rbt (sp)
|
Any | 146 | ×3.3 | 11.3% | Likely |
|
Electronic stability control
Brakes > ABS / EBS / ESC > Electronic stability control
|
Any | 40 | ×3.2 | 3.1% | Likely |
|
Coil spring (front)
Suspension > Springs > Coil springs > Coil spring
|
Front | 179 | ×3.0 | 13.8% | 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).