| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 39 |
| Registration plate issues | 19 |
| Rear reflector on motorcycle missing |1.4.1| | 18 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Horn not working |1.7.3a| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear Wheel spoke excessively loose |4.2.1b| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Front Position lamp switch insecure |1.1.4b| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Nearside Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Offside Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Front Horn not working wire broken (7.7 (a) (ii)) | 1 |
| Central Rear Shock absorber insecurely attached bolt loose (5.3.2 (a) (i)) | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Front shock absorber seal failed and leaking oil front o/s/f fork seal leaking |2.3.3| | 1 |
| Direction indicator deteriorated and function impaired front o/s/ f indector showing white light |1.5.3a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear position lamp missing |1.1.1a| | 1 |
| Drive chain worn to excess rollers on chain are missing |6.2.1e| | 1 |
| Offside Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp light intensity significantly reduced |4.3.3 |a| |ii|| | 1 |
| Fuel system component leaking Carb over flow |6.1.3 |b| |i|| | 1 |
| Offside Front Lower Wheel spoke excessively loose |4.2.1b| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 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 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen dipping to the wrong side (4.1.2 (a)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Handlebar mounting insecure handlebar mounts locking devices missing (2.2.1 (a) (i)) | 1 |
| Front Brake hose leaking (1.1.12 (c)) | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Shock absorber has a serious fluid leak REAR (5.3.2 (b)) | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear footrest locking device missing |6.2.1h| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Throttle operating incorrectly Not returning free |6.2.1f| | 1 |
| Rear suspension bearing has excessive free play Swing arm bearings |2.4.A2a|i|| | 1 |
| Rear suspension bearing has excessive free play Linkage bearing |2.4.A2a|i|| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Nearside Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Offside Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Brake hose excessively kinked |3.2.B3a| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Roller brake test indicates a binding brake both front & rear calipers binding badly |3.3.A1a| | 1 |
| Throttle operating incorrectly insecure & cable kinked affecting idle speed. |6.2.1f| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking Front mud guard |6.1.1c| | 1 |
| Brake performance not tested Front no pads |3.3| | 1 |
| Roller brake test indicates a binding brake Rear |3.3.A1a| | 1 |
| Footrest missing L/H Rear |6.2.1a| | 1 |
| Throttle operating incorrectly Not Returning, And handlebar mounting loose |6.2.1f| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Stop lamp not working STOP LAMP NOT ILLUMINATING WHEN FRONT BRAKE LEVER IS ACTIVATED |4.3.1 |a| |ii|| | 1 |
| Stop lamp not working STOP LAMP NOT ILLUMINATING WHEN REAR BRAKE LEVER IS ACTIVATED |4.3.1 |a| |ii|| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Centre Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Steering control handlebar movement restricted by trapped cables Clutch cable |2.1.2c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake master cylinder has an excessively worn master cylinder pivot. |3.2.B5| | 1 |
| Rear Suspension component modified so the suspension is inoperative (5.3.3 (c) (ii)) | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Drive chain excessively tight |6.2.1d| | 1 |
| Centre Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Centre Rear Drive chain excessively loose |6.2.1d| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Nearside Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Stop lamp remains on when the brake is released front brake |1.3.1e| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Wheel spoke excessively corroded |4.2.1b| | 1 |
| Rear Wheel spoke excessively bent |4.2.1b| | 1 |
| Nearside Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |