| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 32 |
| Headlamp aim out of alignment | 32 |
| Drive chain excessively loose |6.2.1d| | 19 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 17 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 14 |
| Horn not working |1.7.3a| | 13 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Registration plate issues | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 11 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 11 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 10 |
| Direction indicators not working |1.5.1c| | 10 |
| Drive chain worn to excess |6.2.1e| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 8 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 8 |
| Rear Wheel spoke excessively loose |4.2.1b| | 8 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Nearside Rear Direction indicator not working |1.5.1c| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Offside Rear Direction indicators not working |1.5.1c| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Offside Rear Direction indicator not working |1.5.1c| | 5 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 5 |
| Direction indicator not working |1.5.1c| | 5 |
| Front Horn not working |1.7.3a| | 5 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 5 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Position lamp switch insecure |1.1.4b| | 4 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Footrest insecure |6.2.1a| | 3 |
| Fuel tank leaking |7.2.1a| | 3 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Horn is not a constant note |1.7.3c| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 3 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 3 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Front Direction indicators not working |1.5.1c| | 3 |
| Rear Direction indicators not working |1.5.1c| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 3 |
| All direction indicators not working |4.4.1 |a| |ii|| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Front mudguard insecure |2.3.7| | 2 |
| Nearside Front Indicator tell tale not functioning |1.5.2| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Direction indicators not working |1.5.1c| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Wheel spindle locking device missing (5.2.1 (d)) | 2 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Stop lamp affected by the operation of the horn |1.3.2| | 2 |
| Front Brake locking device insecure |3.2.A1e| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 2 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Horn missing |1.7.1| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Stop lamp not working Front (4.3.1 (a) (ii)) | 1 |
| Wheel fixing missing (single fixing) Front Split pin (5.2.1 (a) (ii)) | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 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 position lamp damaged and function impaired |1.1.1b| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Direction indicator not working Both rear |4.4.1 |a| |ii|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Inner Front Upper Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Inner Front Upper Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Inner Front Upper Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Central Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Central Rear Position lamp not working rear light not working (4.2.1 (a)) | 1 |
| Direction indicator not working all |4.4.1 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Offside Front Brake lever insecure |3.1.2a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Brake lever cracked |3.1.2c| | 1 |
| Rear Suspension arm attachment bracket/mounting insecure Tighten securing bolt |5.3.3 |a| |i|| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride joining link clip |6.2.1h| | 1 |
| Nearside Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Rear Direction indicators not working both sides |1.5.1c| | 1 |
| Rear Footrest missing both |6.2.1a| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Centre Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Fuel system component leaking carb over flowing (6.1.3 (b) (i)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Wheel spoke excessively corroded |4.2.1b| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Front Brake lever mounting cracked |3.1.2c| | 1 |
| Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Nearside Front Headlamp switch insecure |1.2.4| | 1 |
| Nearside Fuel pipe leaking |7.2.1a| | 1 |
| Offside Rear Exhaust mounting missing |7.1.1c| | 1 |
| Offside Front Upper Indicator tell tale not functioning |1.5.2| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Brake pedal is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Handlebar handgrip missing |2.1.1c| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Front Exhaust mounting missing |7.1.1c| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Brake performance not tested |3.3| | 1 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure rear fender insecure |6.1.1 |b| |i|| | 1 |
| Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Rear Position lamp light intensity significantly reduced rear lamp / stop lamp intensity incorrect |4.2.3 |a| |ii|| | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock cables catching right hand lock |2.1.4 |a|| | 1 |
| Nearside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Front Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Lower Brake reaction bracket insecure |3.2.A1j| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Drive belt excessively loose. |6.2.1d| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Floor brake test indicates a sticking brake not returning correctly |3.3.C2c| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Front wheel insecure |4.2.3b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Brake pedal pivot has excessive free play |1.1.1 |b|| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Horn control not readily accesible. |1.7.2a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Front suspension assembly has an insecure fork brace |2.3.4d| | 1 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Rear Upper Direction indicator obscured |1.5.1a| | 1 |
| Nearside Rear Lower Drive chain excessively loose |6.2.1d| | 1 |