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 1,618 of 1,621 failed first attempts (99.8%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Drive shafts — Joints (front) — 29.1% of this year's failed first attempts
Recorded on 471 of those tests. It tops the table on elevation — about 6.5× 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.
| Fault pattern | Location | Failures | vs similar cars | Share of fails | Confidence |
|---|---|---|---|---|---|
|
Drive shafts — Joints (front)
Body, chassis, structure > Transmission > Drive shafts > Joints
|
Front | 471 | ×6.5 | 29.1% | Strong |
|
Exhaust system (rear)
Body, chassis, structure > Exhaust system
|
Rear | 104 | ×6.3 | 6.4% | Strong |
|
Position lamp (front)
Lamps, reflectors and electrical equipment > Position lamps > Position lamp
|
Front | 335 | ×4.4 | 20.7% | Likely |
|
Wheel bearings (front)
Suspension > Wheel bearings
|
Front | 53 | ×4.2 | 3.3% | Likely |
|
Registration plate lamp(s) (rear)
Lamps, reflectors and electrical equipment > Registration plate lamp(s)
|
Rear | 163 | ×3.3 | 10.1% | Likely |
|
Stop lamp (rear)
Lamps, reflectors and electrical equipment > Stop lamp
|
Rear | 162 | ×3.2 | 10.0% | Likely |
|
Rear fog lamp
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Any | 43 | ×2.8 | 2.7% | Possible |
| Diesel emissions test (compression-ignition rules for vehicles from 01/01/2014) | Any | 55 | ×2.4 | 3.4% | Possible |
|
Position lamp (rear)
Lamps, reflectors and electrical equipment > Position lamps > Position lamp
|
Rear | 53 | ×2.3 | 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).