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 677 of 682 failed first attempts (99.3%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Leaf spring (rear) — 12.6% of this year's failed first attempts
Recorded on 85 of those tests. It tops the table on elevation — about 65× more often than on similar cars of the same age and mileage. On this year it is also the commonest failure, so it answers both questions at once. 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 | 85 | ×65 | 12.6% | Likely |
| Diesel emissions test (compression-ignition rules for vehicles from 01/07/2008) | Any | 59 | ×5.7 | 8.7% | Likely |
|
Rear fog lamp
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Any | 41 | ×5.0 | 6.1% | Likely |
|
Rigid brake pipes (front)
Brakes > Rigid brake pipes
|
Front | 25 | ×4.8 | 3.7% | Possible |
|
Ball joint dust cover (front)
Suspension > Suspension arms > Ball joint dust cover
|
Front | 51 | ×4.4 | 7.5% | Likely |
|
Rigid brake pipes (rear)
Brakes > Rigid brake pipes
|
Rear | 38 | ×4.1 | 5.6% | Likely |
|
Anti-lock braking system
Brakes > ABS / EBS / ESC > Anti-lock braking system
|
Any | 32 | ×3.1 | 4.7% | Likely |
|
Malfunction indicator lamp
Noise, emissions and leaks > Exhaust emissions > Compression ignition > Malfunction indicator lamp
|
Any | 46 | ×2.6 | 6.8% | Possible |
|
Track rod end
Steering > Steering linkage components > Track rod end
|
Any | 28 | ×2.2 | 4.1% | Possible |
|
Exhaust system (rear)
Body, chassis, structure > Exhaust system
|
Rear | 32 | ×2.2 | 4.7% | 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).