| Most common failures | No# failures |
|---|
| Registration plate issues | 11 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Headlamp aim out of alignment | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Horn not working |1.7.3a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Fairings so located that it is likely to impede the steering hand guard insecure |2.1.2e| | 1 |
| Headlamp lens seriously defective (4.1.1 (b) (ii)) | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking insecure rear mudguard |6.1.1c| | 1 |
| Headlamp at least one does not illuminate on dipped beam no dip beam |1.2.2a|i|| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front Fairings so located that it is likely to impede the steering hand guard insecure |2.1.2e| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |