| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Drive chain worn to excess |6.2.1e| | 10 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 7 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Registration plate issues | 4 |
| Rear Drive chain excessively loose |6.2.1d| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 3 |
| Horn not working |1.7.3a| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake component is excessively corroded |3.1.5| | 1 |
| Brake component is excessively corroded |3.1.5| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Centre Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Fuel hose leaking |6.1.3 |b| |i|| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Offside Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Centre Rear Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Rear Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Rear Brake component leaking fluid |3.2.B4| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Front Brake hose which buldges |3.2.B4| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Brake locking device missing Brake drum arm |3.2.A1e| | 1 |
| Throttle operating incorrectly Throttle sticking on offside lock |6.2.1f| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Direction indicators not working all indicators. |1.5.1c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Footrest insecure (6.2.12 (a)) | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Central Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |