| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 12 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Registration plate issues | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Nearside Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Lower Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Offside Rear Lower Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Steering lock stop maladjusted |2.1.3| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Motorcycle structure excessively corroded Swing arm. |6.1.1a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Offside Handlebar handgrip missing |2.1.1c| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Brake caliper|s| insecure |3.2.A1j| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Inner Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Inner Rear Lower Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Inner Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Steering damper ineffective |2.1.2d| | 1 |
| Offside Front Steering damper ineffective |2.1.2d| | 1 |
| Offside Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Rear Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Offside Rear Lower Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake performance not tested |3.3| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Centre Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Headlamp missing |1.2.3a| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Front suspension assembly component missing |2.3.1| | 1 |
| Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp |4.3.3 |b|| | 1 |
| Front Brake hose excessively stretched both brake pipes when the suspension is at full extension |1.1.12 |b| |ii|| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Registration plate lamp issues | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake component insecure Brake arm split pin missing (1.1.21 (c)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |