| Most common failures | No# failures |
|---|
| Headlamp aim beam image kick up to the offside |1.6| | 25 |
| Headlamp aim out of alignment | 21 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 19 |
| Drive chain excessively loose |6.2.1d| | 18 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Registration plate issues | 9 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 9 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Front wheel bearings are excessively rough |2.3.5b| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Horn not working |1.7.3a| | 6 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Nearside Front Direction indicators not working |1.5.1c| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Rear Footrest missing |6.2.1a| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Nearside Handlebar deformed |2.1.1b| | 3 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Direction indicator missing |1.5.1a| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Brake pipe inadequately supported |3.2.B2b| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear Brake pedal insecure |3.1.2a| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Front Riders seat insecure |6.2.1a| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Offside Front Direction indicator missing |1.5.1a| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| 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 Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Brake lever excessively damaged |3.2.A1c| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Stop lamp not working front lever (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Inner Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Nearside Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Stop lamp insecure |1.3.3b| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake component is fractured |3.1.5| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear Riders seat insecure |6.2.1a| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Front mudguard can easily contact the wheel |2.3.7| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Brake master cylinder has an excessively worn master cylinder pivot. |3.2.B5| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Central Front Horn not working |7.7 |a| |ii|| | 1 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Front suspension assembly component cracked |2.3.1| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| 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 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Inner Front Upper Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear shock absorber has inadequate damping effect. rear suspension has too much sag, and has only a small amount of movement to work. |2.4.A.3b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Centre Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| An item not tested |Manual| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Brake hose excessively deteriorated | 1 |
| Nearside Front Direction indicator missing |4.4.1 |a| |ii|| | 1 |
| Offside Front Direction indicator missing |4.4.1 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Lower Front suspension assembly component missing |2.3.1| | 1 |