| Most common failures | No# failures |
|---|
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 21 |
| Rear reflector on motorcycle missing |1.4.1| | 20 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 15 |
| Steering headbearing has excessive free play |2.2.2| | 14 |
| Drive chain worn to excess |6.2.1e| | 13 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Horn not working |1.7.3a| | 9 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 7 |
| Front wheel bearings are excessively rough |2.3.5b| | 7 |
| Headlamp aim out of alignment | 7 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 6 |
| Registration plate issues | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Rear reflector on motorcycle obscured |1.4.1| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Indicator switch insecure |1.5.4| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp insecure |1.2.3b| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear Brake disc|s| cracked |3.2.A1g| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Rear Direction indicators not working |1.5.1c| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Offside Steering lock stop missing |2.1.3| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Front Brake lever attachment screws loose |3.1.2b| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Handlebar handgrip missing |2.1.1c| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear Drive chain horseshoe locking device incorrectly fitted wrong way round (6.1.7 (j) (i)) | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Headlamp main beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Horn missing |1.7.1| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Brake hose fouling |3.2.B3b| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Centre Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Nearside Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Centre Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Centre Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Stop lamp not working foot brake (4.3.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Centre Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Brake component is severely distorted |3.1.5| | 1 |
| Brake hose fouling |3.2.B3b| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Registration plate lamp issues | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Centre Front Headlamp insecure |1.2.3b| | 1 |
| Centre Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Offside Front Steering lock stop missing |2.1.3| | 1 |
| Centre Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| An item not tested |Manual| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Offside Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |