| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 40 |
| Rear reflector on motorcycle missing |1.4.1| | 25 |
| Registration plate issues | 20 |
| Steering headbearing has excessive free play |2.2.2| | 15 |
| Drive chain excessively loose |6.2.1d| | 12 |
| Horn not working |1.7.3a| | 12 |
| Front Wheel spoke excessively loose |4.2.1b| | 11 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Drive chain worn to excess |6.2.1e| | 9 |
| Rear Wheel spoke excessively loose |4.2.1b| | 9 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 7 |
| Nearside Rear Footrest missing |6.2.1a| | 6 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Rear Direction indicator not working |1.5.1c| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Offside Rear Footrest insecure |6.2.1a| | 5 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 3 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Direction indicator not working |1.5.1c| | 3 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 2 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Horn is not a constant note |1.7.3c| | 2 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Footrest missing |6.2.1a| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Front wheel insecure |4.2.3b| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Front Throttle operating incorrectly |6.2.1f| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low (3.2.B1d) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Upper Direction indicator not working |1.5.1c| | 1 |
| Offside Upper Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake hose which buldges |3.2.B4| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Exhaust is leaking and excessively noisey rotted at down pipe |7.1.1b| | 1 |
| Front Horn is not a constant note |1.7.3c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Front Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Steering headbearing has excessive wear or free play excessive free play |2.2.2 |f| |i|| | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Offside Rear Upper Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Suspension component pin or bush excessively worn rear lower link (5.3.4 (a) (i)) | 1 |
| Registration plate lamp issues | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |
| Offside Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Rear Brake lever pivots excessively worn |3.1.3a| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Brake lever insecure |1.1.2 |e| |i|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Front Wheel spoke excessively bent |4.2.1b| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Wheel spoke missing |4.2.1b| | 1 |
| Rear Lower Suspension component pin or bush excessively worn wishbone bush (5.3.4 (a) (i)) | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Upper Fork yoke insecure (2.2.2 (d) (i)) | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Brake pedal insecure pivot not secure |3.1.2a| | 1 |
| Lower Rear suspension bush has excessive free play pivots also appear loose |2.4.A2a|i|| | 1 |
| Rear Rear wheel spindle securing nut locking device insecure rear axle stop bolts missing |2.4.A.2b| | 1 |
| Rear Motorcycle structure adversely modified |6.1.1b| | 1 |
| Headlamp switch faulty wrong way round
dipped=high
high=dipped |1.2.4| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Front mudguard can easily contact any fixed point of the motor bicycle. rubbing frame |2.3.7| | 1 |
| Front wheel insecure spacer missing |4.2.3b| | 1 |
| Floor brake test indicates a binding brake disc binding against caliper |spacer!!| |3.3.C2c| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Lower Rear mono-shock insecure |2.4.B.4| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Upper Exhaust mounting missing |7.1.1c| | 1 |
| Rear Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Rear suspension component loose swinging arm bolt |2.4.A.1a| | 1 |
| Upper Rear mono-shock insecure |2.4.B.4| | 1 |
| An item not tested |Manual| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Fuel cap missing (6.1.3 (b) (i)) | 1 |
| Suspension attachment bracket/mounting insecure swinging arm (5.3.3 (a) (i)) | 1 |
| Front Drive chain sprocket excessively loose locking device (6.1.7 (c) (i)) | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Wheel spoke cracked. |4.2.1b| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 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 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Front Indicator tell tale not functioning |1.5.2| | 1 |
| Brake lever pivots excessively worn |3.1.3a| | 1 |
| Front Direction indicator obscured |1.5.1a| | 1 |
| Offside Front Direction indicator obscured |1.5.1a| | 1 |
| Front Brake hose which buldges |3.2.B4| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Offside Front Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Lower Drive chain worn to excess |6.2.1e| | 1 |
| Offside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Exhaust mounting missing |7.1.1c| | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Horn missing |1.7.1| | 1 |
| All direction indicators missing |4.4.1 |a| |ii|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Motorcycle structure adversely modified |6.1.1b| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride split link fitted wrong way |6.2.1h| | 1 |
| Centre Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |