| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Headlamp aim out of alignment | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Registration plate issues | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Indicator switch defective |1.5.4| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Horn not working |1.7.3a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Vehicle identification number not permanently displayed |6.3.5a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Front Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |