| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 16 |
| Headlamp aim out of alignment | 12 |
| Registration plate issues | 10 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Horn not working |1.7.3a| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Rear Wheel spoke excessively loose |4.2.1b| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Front Wheel spoke excessively loose |4.2.1b| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Fuel tank leaking |7.2.1a| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear mono-shock insecure |2.4.B.4| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 2 |
| Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Central Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Stop lamp remains on when the brake is released switch|rear| |1.3.1e| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Rear Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Brake performance not tested due to rear dics cracked |3.3| | 1 |
| Horn missing |1.7.1| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Lower Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 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 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Brake performance not tested |3.3| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Centre Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Rear Lower Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Horn replaced by a siren |1.7.3b| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Handlebar deformed |2.1.1b| | 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 |
| Front An item not tested |Manual| | 1 |
| Rear An item not tested |Manual| | 1 |
| Nearside Front Footrest insecure locking device |6.2.12 |a|| | 1 |
| Centre Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear 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 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Upper All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Upper All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Upper Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front Upper Horn not working |1.7.3a| | 1 |
| Nearside Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Upper Headlamp missing |1.2.3a| | 1 |
| Nearside Rear Upper Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Front Upper Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Upper Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Nearside Rear Upper Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Nearside Front Upper Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Nearside Front Upper Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Upper Headlamp aim not tested |1.6| | 1 |
| Nearside Rear Upper Chain guard insecure |6.2.1c| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Rear Wheel excessively corroded |5.2.2 |c| |i|| | 1 |
| Front Wheel spindle loose |5.2.1 |c| |i|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Wheel corroded to the extent that the wheel could break up |5.2.2 |c| |ii|| | 1 |
| Front Wheel spoke excessively loose 2 spokes. |5.2.2 |d|| | 1 |
| Offside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Brake caliper inadequately mounted and braking performance affected FOULING ON BRAKE DISC. |1.1.16 |c| |ii|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Nearside Footrest insecure Split pin missing from footrest clevis pin. |6.2.12 |a|| | 1 |
| Rear Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Front Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |