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 1,658 of 1,659 failed first attempts (99.9%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Rigid brake pipes (front) — 9.6% of this year's failed first attempts
Recorded on 159 of those tests. It tops the table on elevation — about 22× 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 |
|---|---|---|---|---|---|
|
Leaf spring (rear)
Suspension > Springs > Leaf springs > Leaf spring
|
Rear | 87 | ×56 | 5.2% | Likely |
|
Pins and bushes (front)
Suspension > Anti-roll bars > Pins and bushes
|
Front | 90 | ×33 | 5.4% | Likely |
|
Rigid brake pipes (front)
Brakes > Rigid brake pipes
|
Front | 159 | ×22 | 9.6% | Strong |
|
Rigid brake pipes (rear)
Brakes > Rigid brake pipes
|
Rear | 122 | ×14 | 7.4% | Strong |
|
Rear fog lamp (rear)
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Rear | 82 | ×6.2 | 4.9% | Likely |
|
Position lamp (rear)
Lamps, reflectors and electrical equipment > Position lamps > Position lamp
|
Rear | 97 | ×4.3 | 5.9% | Likely |
|
Shock absorbers (rear)
Suspension > Shock absorbers
|
Rear | 119 | ×3.9 | 7.2% | Likely |
| Diesel emissions test (compression-ignition rules for vehicles from 01/01/2014) | Any | 34 | ×2.0 | 2.1% | 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).