| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 29 |
| Rear reflector on motorcycle missing |1.4.1| | 22 |
| Registration plate issues | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Horn not working |1.7.3a| | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Brake locking device missing |3.2.A1e| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. GLUED |2.1.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Horn sounds harsh or grating |1.7.3c| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Brake hose excessively deteriorated | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Exhaust silencer likely to become detached Touching rear subframe |8.1.1 |b| |ii|| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 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 wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Nearside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies brake |1.3.1a| | 1 |
| Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Stop lamp not working foot brake |4.3.1 |a| |ii|| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Front Brake pipe excessively damaged |3.2.B2a| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Front suspension assembly component loose steering head nut loose |2.3.1| | 1 |
| Lower Rear suspension component loose shock absorber mounting bolts |2.4.A.1a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket nuts loose |6.2.1h| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Steering headbearing excessively stiff or notchy notchy (2.2.2 (f) (i)) | 1 |
| Suspension component pin or bush excessively worn swingarm bearings (bushes) (5.3.4 (a) (i)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |