| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 37 |
| Headlamp aim out of alignment | 25 |
| Registration plate issues | 20 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 18 |
| Drive chain excessively loose |6.2.1d| | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 13 |
| Rear Footrest missing |6.2.1a| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Nearside Rear Footrest missing |6.2.1a| | 9 |
| Front wheel bearings have excessive free play |2.3.5b| | 9 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 9 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 8 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 8 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Offside Rear Footrest missing |6.2.1a| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front wheel bearings are excessively rough |2.3.5b| | 7 |
| Drive chain worn to excess |6.2.1e| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 6 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 6 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 5 |
| Horn not working |1.7.3a| | 5 |
| Direction indicators not working |1.5.1c| | 5 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 5 |
| Nearside Front Direction indicator not working |1.5.1c| | 5 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front suspension has inadequate damping effect. |2.3.6c| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 4 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 4 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Front position lamp incorrect colour |1.1.2a| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Rear Drive chain worn to excess |6.2.1e| | 3 |
| Nearside Front Direction indicator insecure |1.5.3b| | 3 |
| Rear Exhaust mounting missing |7.1.1c| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Front Headlamp insecure |1.2.3b| | 3 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Offside Front Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 2 |
| An item not tested |Manual| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Brake caliper|s| insecure |3.2.A1j| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Front suspension assembly component missing |2.3.1| | 2 |
| Nearside Indicator tell tale not functioning |1.5.2| | 2 |
| Front Front mudguard insecure |2.3.7| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Brake hose damaged | 2 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Front Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Indicator switch insecure |1.5.4| | 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 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Centre Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Front Footrest missing |6.2.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Front suspension assembly has an insecure fork brace |2.3.4d| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Lower Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Offside Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Centre Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Motorcycle structure cracked |6.1.1a| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake component is fractured |3.1.5| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Front Motorcycle structure cracked |6.1.1a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Front Brake component is severely distorted |3.1.5| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Rear Brake disc|s| insecure |3.2.A1g| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Offside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear suspension bush has excessive free play linkage bushes |2.4.A2a|i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain link clip |6.2.1h| | 1 |
| Offside Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front mudguard can easily contact any fixed point of the motor bicycle. |2.3.7| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Front Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Throttle operating incorrectly |6.2.1f| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Inner Direction indicator insecure |1.5.3b| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Rear Brake component modification unsafe |1.1.21 |d| |i|| | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front Front suspension assembly component missing |2.3.1| | 1 |
| Nearside Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Offside Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Offside Front Motorcycle structure cracked |6.1.1a| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Fork yoke deformed |2.1.1b| | 1 |
| Offside Front Position lamp switch insecure |1.1.4b| | 1 |
| Brake lever excessively damaged rear lever casing broken |3.2.A1c| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |