| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 37 |
| Headlamp aim out of alignment | 25 |
| Drive chain excessively loose |6.2.1d| | 25 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 24 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 24 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 22 |
| Horn not working |1.7.3a| | 21 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Registration plate issues | 14 |
| Drive chain worn to excess |6.2.1e| | 14 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 13 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 11 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 11 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Drive chain excessively tight |6.2.1d| | 10 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 8 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 8 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 7 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Direction indicators not working |1.5.1c| | 7 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 7 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Rear reflector on motorcycle obscured |1.4.1| | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Headlamp insecure |1.2.3b| | 5 |
| Front Direction indicator not working |1.5.1c| | 5 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 5 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Offside Front Direction indicator not working |1.5.1c| | 5 |
| Direction indicator not working |1.5.1c| | 4 |
| Rear Drive chain excessively loose |6.2.1d| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Nearside Steering lock stop missing |2.1.3| | 3 |
| 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| | 3 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front Brake lever insecure |3.1.2a| | 3 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 3 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 3 |
| Rear Direction indicator not working |1.5.1c| | 3 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 3 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 3 |
| Fuel cap sealing washer missing |7.2.2c| | 3 |
| Rear Drive chain worn to excess |6.2.1e| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Footrest missing |6.2.1a| | 3 |
| Front Headlamp insecure |1.2.3b| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Footrest missing |6.2.1a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| An item not tested |Manual| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Rear position lamp incorrect colour |1.1.2b| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 2 |
| Nearside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Centre Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Front Stop lamp missing |1.3.3a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Headlamp aim not tested no beam change |1.6| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Wheel spoke cracked. |4.2.1b| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Horn control defective |1.7.2a| | 2 |
| Nearside Direction indicators not working |1.5.1c| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear suspension bush has excessive free play lower shock |2.4.A2a|i|| | 1 |
| Headlamp insecure Bulb not fitted correctly |1.2.3b| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Inner Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front Upper Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Inner Front Upper Headlamp insecure |1.2.3b| | 1 |
| Inner Front Upper Steering lock stop ineffective |2.1.3| | 1 |
| Inner Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Front Upper Stop lamp missing |1.3.3a| | 1 |
| Nearside Front 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 Brake back plate|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Front Headlamp switch insecure |1.2.4| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Wheel spoke missing |4.2.1b| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Upper Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Wheel fractured significantly reducing the original strength |4.2.1a| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Wheel spoke cracked. |4.2.1b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Brake component is severely distorted |3.1.5| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Nearside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Upper Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Shock absorber has a serious fluid leak fork seal leaking |5.3.2 |b|| | 1 |
| Rear Drive chain fouling another component |6.2.1d| | 1 |
| Front Headlamp aim not tested |4.1.2 |b|| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Exhaust mounting missing |7.1.1c| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Wheel spoke excessively bent |4.2.1b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Offside Outer Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 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 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Front Horn not working |1.7.3a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Suspension arm pin or bush excessively worn mono shock link bearings |5.3.4 |a| |i|| | 1 |
| Front Horn is not a constant note |1.7.3c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |