| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Registration plate issues | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Horn missing |1.7.1| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Registration plate lamp issues | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock headlamp bracket hitting the tank |2.1.4 |b|| | 1 |
| Front Suspension component has an unsafe modification exhaust hits the front fender when suspension under load |5.3.3 |c| |i|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain split link fitted in wrong direction |6.2.1h| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake cylinder operating mechanism has excessive travel (1.1.16 (e) (i)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride front wheel spindle cotter pin missing |6.2.1h| | 1 |
| Rear Drive chain fouling another component drive chain d link in backwards |6.2.1d| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Upper Fuel system component insecure |7.2.1b| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Rear suspension component excessively corroded. Swing arm corroded |2.4.A.1a| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Offside Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Rear Brake clevis joint insecure rear brake arm nut and bolt missing |1.1.15 |c|| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 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 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Nearside Rear suspension component cracked |2.4.A.1a| | 1 |
| Offside Rear suspension component cracked |2.4.A.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Horn not working |1.7.3a| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute Stays on |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute Stays on |1.5.1c| | 1 |
| Offside Front Brake master cylinder insecurely mounted Incorrectly fitted, not level to handle bars |3.2.B1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |