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 1,494 of 1,498 failed first attempts (99.7%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Chassis condition (front) — 8.7% of this year's failed first attempts
Recorded on 130 of those tests. It tops the table on elevation — about 10× 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 |
|---|---|---|---|---|---|
|
Outline marker lamp (rear)
Lamps, reflectors and electrical equipment > Outline marker lamps > Outline marker lamp
|
Rear | 65 | ×24 | 4.4% | Likely |
|
Outline marker lamp (front)
Lamps, reflectors and electrical equipment > Outline marker lamps > Outline marker lamp
|
Front | 35 | ×16 | 2.3% | Likely |
|
Sub-frame mounting prescribed areas (front)
Suspension > Sub-frames > Sub-frame mounting prescribed areas
|
Front | 71 | ×13 | 4.8% | Likely |
|
Integral vehicle structure condition (front)
Body, chassis, structure > Integral vehicle structure > Integral vehicle structure condition
|
Front | 95 | ×11 | 6.4% | Likely |
|
Chassis condition (front)
Body, chassis, structure > Chassis > Chassis condition
|
Front | 130 | ×10 | 8.7% | Strong |
|
Component mounting prescribed areas (front)
Suspension > Component mounting prescribed areas
|
Front | 200 | ×10 | 13.4% | Strong |
|
Service brake performance
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake performance
|
Any | 124 | ×8.5 | 8.3% | Strong |
|
Prescribed areas (front)
Seat belts and supplementary restraint systems > Seat belts > Prescribed areas
|
Front | 33 | ×4.6 | 2.2% | Likely |
|
Wheel bearings (front)
Suspension > Wheel bearings
|
Front | 52 | ×3.1 | 3.5% | Likely |
|
Rear fog lamp (rear)
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Rear | 89 | ×3.1 | 6.0% | Likely |
Only patterns that clear minimum sample and elevation thresholds are shown (at least 20 failures and about 2.0× more often than similar cars).