| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 31 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 23 |
| Registration plate issues | 12 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Headlamp switch faulty |1.2.4| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Rear Wheel spoke missing |4.2.1b| | 4 |
| Horn not working |1.7.3a| | 4 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 3 |
| Rear Wheel spoke excessively loose |4.2.1b| | 3 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 3 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Motorcycle structure excessively corroded |6.1.1a| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Stop lamp missing |1.3.3a| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear suspension component loose |2.4.A.1a| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Wheel spoke cracked. |4.2.1b| | 2 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| An item not tested |Manual| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. Swingarm rusted |2.4.A.2d| | 1 |
| Nearside Front Front wheel has a missing wheel bolt|s| |4.2.3a| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Suspension component attachment bracket/mounting corroded and seriously weakened |5.3.3 |b| |i|| | 1 |
| Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Central Rear Motorcycle structure excessively corroded swingarm |6.1.1a| | 1 |
| Offside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Front Lower Steering linkage locking device missing wheel spindel pinch bolt |2.1.3 |d|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Nearside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Chain guard fouling another component |6.2.1c| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|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 Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Rear Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Front Decelerometer brake test indicates a sticking brake |3.3.E1d| | 1 |
| Rear Decelerometer brake test indicates a sticking brake |3.3.E1d| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Outer Upper Direction indicators not working |1.5.1c| | 1 |
| Centre Front Upper Horn not working |1.7.3a| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Offside Front suspension assembly component loose |2.3.1| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Brake linked system has a seized caliper pivot. |3.2.B5| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Front Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Nearside Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear Brake back plate insecure (1.1.14 (d)) | 1 |
| Rear Stop lamp not working switch connectioncleaned (4.3.1 (a) (ii)) | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Central Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Offside Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Offside Upper Front suspension assembly component loose top yoke fork pinch bolt |2.3.1| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear suspension component cracked |2.4.A.1a| | 1 |
| Inner Front Upper Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 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 |
| Front Stop lamp flickers when tapped lightly by hand |1.3.1d| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Built up wheel has a loose bolt/s Wheel nut insecure |4.2.1c| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Rear Brake locking device insecure Rear brake ankor nut loose! |3.2.A1e| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |