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 723 of 724 failed first attempts (99.9%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Spring mounting prescribed areas (rear) — 3.6% of this year's failed first attempts
Recorded on 26 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.
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 |
|---|---|---|---|---|---|
|
Spring mounting prescribed areas (rear)
Suspension > Springs > Spring mounting prescribed areas
|
Rear | 26 | ×14 | 3.6% | Possible |
|
Chassis condition (rear)
Body, chassis, structure > Chassis > Chassis condition
|
Rear | 60 | ×7.9 | 8.3% | Likely |
|
Service brake performance
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake performance
|
Any | 35 | ×7.7 | 4.8% | Likely |
|
Rear fog lamp (rear)
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Rear | 75 | ×7.0 | 10.4% | Likely |
|
Service brake imbalance (rear)
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake imbalance
|
Rear | 42 | ×5.1 | 5.8% | Likely |
|
Chassis condition (front)
Body, chassis, structure > Chassis > Chassis condition
|
Front | 21 | ×4.3 | 2.9% | Possible |
|
Rigid brake pipes (front)
Brakes > Rigid brake pipes
|
Front | 34 | ×4.2 | 4.7% | Likely |
| Diesel emissions test (pre-reg turbo rules before 01/07/2008) | Any | 28 | ×3.0 | 3.9% | Possible |
|
Electrical equipment — Horn
Lamps, reflectors and electrical equipment > Electrical equipment > Horn
|
Any | 30 | ×2.7 | 4.1% | Possible |
| Diesel emissions test (compression-ignition rules for vehicles from 01/07/2008) | Any | 30 | ×2.7 | 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).