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 263 of 268 failed first attempts (98.1%) that recorded an odometer reading in 2025 — the subset the age-and-mileage comparison can be computed on.
Standout: Service brake imbalance (rear) — 12.5% of this year's failed first attempts
Recorded on 33 of those tests. It tops the table on elevation — about 3.4× more often than on similar cars of the same age and mileage. 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 |
|---|---|---|---|---|---|
|
Service brake imbalance (rear)
Brakes > Brake performance > Service Brake Efficiency (sp) > Rbt (sp) > Service brake imbalance
|
Rear | 33 | ×3.4 | 12.5% | Likely |
|
Ball joint (front)
Suspension > Suspension arms > Ball joint
|
Front | 32 | ×3.3 | 12.2% | Likely |
|
Rigid brake pipes (rear)
Brakes > Rigid brake pipes
|
Rear | 22 | ×2.5 | 8.4% | Possible |
|
Service brake performance (rear)
Brakes > Brake performance > Service brake performance > Rbt > Service brake performance
|
Rear | 21 | ×2.4 | 8.0% | Possible |
|
Malfunction indicator lamp
Noise, emissions and leaks > Exhaust emissions > Spark ignition > Malfunction indicator lamp
|
Any | 23 | ×2.2 | 8.7% | 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).