| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 139 |
| Registration plate issues | 41 |
| Rear reflector on motorcycle missing |1.4.1| | 24 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 16 |
| Front wheel bearings have excessive free play |2.3.5b| | 13 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 11 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Horn not working |1.7.3a| | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 4 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 3 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Offside Handlebar deformed |2.1.1b| | 3 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 2 |
| Registration plate lamp issues | 2 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |