| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Registration plate issues | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Horn not working |1.7.3a| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Brake drum|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Central Rear Lower Rear suspension has an inadequate repair of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Brake pedal attachment screws loose |3.1.2b| | 1 |
| Offside Rear Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Offside Rear Lower Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Centre Rear Lower Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies with rear brake pedal |1.3.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |