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 592 of 595 failed first attempts (99.5%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Fuel system — Tank — 3.9% of this year's failed first attempts
Recorded on 23 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.
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 |
|---|---|---|---|---|---|
|
Fuel system — Tank
Body, chassis, structure > Fuel system > Tank
|
Any | 23 | ×22 | 3.9% | Possible |
|
Prop shafts — Joints (front)
Body, chassis, structure > Transmission > Prop shafts > Joints
|
Front | 20 | ×16 | 3.4% | Possible |
|
Spring mounting prescribed areas (rear)
Suspension > Springs > Spring mounting prescribed areas
|
Rear | 20 | ×14 | 3.4% | Possible |
|
Chassis condition (rear)
Body, chassis, structure > Chassis > Chassis condition
|
Rear | 77 | ×13 | 13.0% | Likely |
|
Service brake performance
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake performance
|
Any | 38 | ×11 | 6.4% | Likely |
|
Wheel bearings (front)
Suspension > Wheel bearings
|
Front | 50 | ×5.8 | 8.4% | Likely |
|
Electrical equipment — Horn
Lamps, reflectors and electrical equipment > Electrical equipment > Horn
|
Any | 34 | ×3.9 | 5.7% | Likely |
|
Rear fog lamp
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Any | 28 | ×3.3 | 4.7% | Possible |
|
SRS malfunction indicator lamp
Seat belts and supplementary restraint systems > SRS malfunction indicator lamp
|
Any | 43 | ×3.1 | 7.3% | Likely |
|
Side repeaters
Lamps, reflectors and electrical equipment > Direction indicators > Flashing type > Side repeaters
|
Any | 28 | ×2.9 | 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).