| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Headlamp insecure |1.2.3b| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Registration plate issues | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 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 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Rear suspension bush has excessive free play swinging arm side ways movement |2.4.A2a|i|| | 1 |
| Rear Brake pedal pivot excessively worn (1.1.1 (b)) | 1 |
| Nearside Upper Suspension attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Suspension component pin or bush excessively worn swing arm (5.3.4 (a) (i)) | 1 |
| Rear Wheel fixing missing (multiple fixings) (5.2.1 (a) (i)) | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Registration plate lamp issues | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Front Brake locking device missing Brake arm bolt not fitted correctly! |3.2.A1e| | 1 |
| Fuel system component leaking Carburetta leaking with fuel switched on! |7.2.1a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Fuel cap ineffective unable to test (6.1.3 (b) (i)) | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Inner Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Outer Front Footrest insecure |6.2.1a| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Nearside Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Nearside Rear Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Nearside Lower Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Direction indicator not working All. |1.5.1c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Horn not working |1.7.3a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride Splitpin missing from front wheel spindle nut. |6.2.1h| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Brake cable badly frayed |3.2.A1b| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 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 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |