| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Headlamp aim out of alignment | 10 |
| Registration plate issues | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Fuel cap ineffective Sealing ring missing (6.1.3 (b) (i)) | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Registration plate lamp issues | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |