| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 13 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Headlamp aim out of alignment | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Registration plate issues | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front position lamp insecure |1.1.1c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Nearside Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Registration plate lamp issues | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Stop lamp not working from front control (4.3.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Front Horn control defective |1.7.2a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. (3.3.A2b) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Drive chain worn to excess (6.2.1e) | 1 |
| Front Drive chain sprocket worn to excess (6.2.1e) | 1 |
| Rear Drive chain sprocket worn to excess (6.2.1e) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.5.1) | 1 |
| Rear Wheel spoke excessively loose (4.2.1b) | 1 |
| Rear reflector on motorcycle incorrectly positioned (1.4.2d) | 1 |
| Rear wheel bearings have excessive free play (2.4.A.2c) | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |