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 997 of 998 failed first attempts (99.9%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Leaf spring (rear) — 5.7% of this year's failed first attempts
Recorded on 57 of those tests. It tops the table on elevation — about 71× 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 |
|---|---|---|---|---|---|
|
Leaf spring (rear)
Suspension > Springs > Leaf springs > Leaf spring
|
Rear | 57 | ×71 | 5.7% | Likely |
|
Prop shaft
Body, chassis, structure > Transmission > Prop shafts > Prop shaft
|
Any | 30 | ×29 | 3.0% | Likely |
|
Rear reflectors (rear)
Lamps, reflectors and electrical equipment > Rear reflectors
|
Rear | 28 | ×18 | 2.8% | Possible |
|
Pins and bushes (front)
Suspension > Anti-roll bars > Pins and bushes
|
Front | 80 | ×16 | 8.0% | Likely |
|
Chassis condition (front)
Body, chassis, structure > Chassis > Chassis condition
|
Front | 48 | ×5.5 | 4.8% | Likely |
|
Rear fog lamp (rear)
Lamps, reflectors and electrical equipment > Front and rear fog lamps > Rear fog lamp > Rear fog lamp
|
Rear | 89 | ×4.5 | 8.9% | Likely |
|
Chassis condition (rear)
Body, chassis, structure > Chassis > Chassis condition
|
Rear | 64 | ×4.1 | 6.4% | Likely |
|
Linkage pins and bushes (front)
Suspension > Anti-roll bars > Linkage pins and bushes
|
Front | 29 | ×3.9 | 2.9% | Possible |
|
Engine oil leaks
Noise, emissions and leaks > Fluid leaks > Engine oil leaks
|
Any | 25 | ×3.7 | 2.5% | Possible |
|
Malfunction indicator lamp
Noise, emissions and leaks > Exhaust emissions > Compression ignition > Malfunction indicator lamp
|
Any | 26 | ×3.5 | 2.6% | 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).