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 666 failed first attempts in 2025 that the age-and-mileage comparison can be computed on.
Standout: Decelerometer (sp) — 6.6% of this year's failed first attempts
Recorded on 44 of those tests. It tops the table on elevation — about 12× 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 |
|---|---|---|---|---|---|
|
Decelerometer (sp)
Brakes > Brake performance > Parking brake efficiency (sp) > Decelerometer (sp)
|
Any | 44 | ×12 | 6.6% | Likely |
|
Flexible brake hoses (front)
Brakes > Flexible brake hoses
|
Front | 26 | ×4.4 | 3.9% | Possible |
|
Electronic stability control
Brakes > ABS / EBS / ESC > Electronic stability control
|
Any | 23 | ×3.6 | 3.5% | Possible |
|
Suspension arm (rear)
Suspension > Suspension arms > Suspension arm
|
Rear | 21 | ×3.5 | 3.2% | Possible |
|
Rear fog lamp (rear)
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Rear | 33 | ×3.2 | 5.0% | Likely |
|
Parking brake control — Lever
Brakes > Parking brake control > Lever
|
Any | 20 | ×3.2 | 3.0% | Possible |
|
Road Wheels — Attachment (front)
Road Wheels > Attachment
|
Front | 20 | ×3.1 | 3.0% | Possible |
|
Malfunction indicator lamp
Noise, emissions and leaks > Exhaust emissions > Compression ignition > Malfunction indicator lamp
|
Any | 31 | ×2.8 | 4.7% | Possible |
|
Position lamp (rear)
Lamps, reflectors and electrical equipment > Position lamps > Position lamp
|
Rear | 52 | ×2.4 | 7.8% | Possible |
|
Registration plate lamp(s) (rear)
Lamps, reflectors and electrical equipment > Registration plate lamp(s)
|
Rear | 35 | ×2.3 | 5.3% | 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).