| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Horn not working |1.7.3a| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front Direction indicator not working |1.5.1c| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Registration plate issues | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Wheel spoke excessively loose |4.2.1b| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Handlebar deformed |2.1.1b| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Stop lamp does not illuminate immediately a brake applies Stop lamp not working when front brake applied |1.3.1a| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Indicator tell tale not functioning |1.5.2| | 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 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Front Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Wheel spoke excessively corroded |4.2.1b| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Front Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Inner Front Lower Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Central Fuel system component leaking carb |7.2.1a| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Offside Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Rear Upper Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Upper Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Offside Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Front Front mudguard insecure |2.3.7| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Rear All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Chain guard missing |6.2.1c| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Brake cable excessively corroded |3.2.A1b| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Front Lower Headlamp switch faulty |1.2.4| | 1 |
| Centre Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Centre Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Engine mounting/bracket bracket excessively loose sprocket bolt loose |6.1.8 |a| |ii|| | 1 |
| Rear shock absorber seal failed and leaking oil both |2.4.A.1c| | 1 |
| Rear shock absorber has inadequate damping effect. both |2.4.A.3b| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Stop lamp not working Rear control |4.3.1 |a| |ii|| | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Position lamp switch faulty |1.1.4a| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Stop lamp missing |1.3.3a| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Offside Exhaust mounting missing |7.1.1c| | 1 |
| Offside Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |