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 890 of 891 failed first attempts (99.9%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Trailer electrical socket — 2.8% of this year's failed first attempts
Recorded on 25 of those tests. It tops the table on elevation — about 41× 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 |
|---|---|---|---|---|---|
|
Trailer electrical socket
Lamps, reflectors and electrical equipment > Electrical equipment > Trailer electrical socket
|
Any | 25 | ×41 | 2.8% | Possible |
|
Parking brake control — Lever
Brakes > Parking brake control > Lever
|
Any | 59 | ×33 | 6.6% | Likely |
|
Electronic stability control
Brakes > ABS / EBS / ESC > Electronic stability control
|
Any | 42 | ×20 | 4.7% | Likely |
|
Pedal
Brakes > Service brake pedal or hand lever > Pedal
|
Any | 42 | ×12 | 4.7% | Likely |
|
Rbt (sp)
Brakes > Brake performance > Parking brake efficiency (sp) > Rbt (sp)
|
Any | 48 | ×4.7 | 5.4% | Likely |
|
Rear fog lamp
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Any | 21 | ×4.6 | 2.4% | Possible |
|
Service brake performance (rear)
Brakes > Brake performance > Service brake performance > Rbt > Service brake performance
|
Rear | 27 | ×3.9 | 3.0% | Possible |
|
Malfunction indicator lamp
Noise, emissions and leaks > Exhaust emissions > Compression ignition > Malfunction indicator lamp
|
Any | 46 | ×3.7 | 5.2% | Likely |
|
Registration plate lamp(s)
Lamps, reflectors and electrical equipment > Registration plate lamp(s)
|
Any | 39 | ×2.4 | 4.4% | 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).