| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 52 |
| Drive chain excessively loose |6.2.1d| | 22 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 17 |
| Drive chain worn to excess |6.2.1e| | 17 |
| Registration plate issues | 17 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 16 |
| Steering headbearing has excessive free play |2.2.2| | 15 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 14 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 14 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 13 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 12 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 11 |
| Horn not working |1.7.3a| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 10 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 10 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 9 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 9 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Offside Front Footrest insecure |6.2.1a| | 5 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Headlamp insecure |1.2.3b| | 5 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 5 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 4 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 3 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 2 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Plate brake test indicates a sticking brake |3.3.B1a| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 2 |
| Brake locking device missing |3.2.A1e| | 2 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Lower Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Steering damper in such a condition that the steering action is impaired. |2.1.2d| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Footrest insecure |6.2.1a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Horn control defective |1.7.2a| | 1 |
| Offside Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Fork yoke deformed |2.1.1b| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Offside Rear Lower Brake component insecure split pin missing. (1.1.21 (c)) | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Footrest missing both pillian |6.2.12 |a|| | 1 |
| Rear Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Nearside Shock absorber has a serious fluid leak front fork |5.3.2 |b|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Brake component has an inadequate repair |3.1.5| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Wheel fixing missing |single fixing| axle split pin |5.2.1 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded brake |3.2.A1h| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling wheel |2.5.1| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Rear Footrest missing both (6.2.12 (a)) | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Rear suspension component excessively corroded. SWINGING ARM |2.4.A.1a| | 1 |
| Lower Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen Headlamp dip/beam not switching correctly. |4.1.2 |a|| | 1 |
| Wheel fixing missing |single fixing| Spindle nuts not pinned,Front and rear. |5.2.1 |a| |ii|| | 1 |
| Front Lower Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Front Brake cable has restricted free movement Cable not returning causing the stop light to stay on |1.1.15 |e|| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp not working Rear Control |4.3.1 |a| |ii|| | 1 |
| Offside Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Drive chain excessively tight, so that it is likely to fail |6.1.7 |k| |ii|| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Central Front Position lamp not working |4.2.1 |a|| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Braking system does not have an approriate system/s fitted according to its age |3.1.1| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Front Wheel spoke missing |4.2.1b| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies control 1 |1.3.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Brake rod excessively chafed |3.2.A1a| | 1 |
| Offside Front Upper Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake lever cannot be released smoothly not returning |3.1.3d| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Indicator tell tale not functioning |1.5.2| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Handlebar deformed (2.1.1b) | 1 |
| Front Steering movement excessively rough with the wheel raised (2.2.1b) | 1 |
| Rear Wheel has a missing rivet/s or bolts (5.2.2 (e) (i)) | 1 |
| Rear Brake lever excessively chafed |3.2.A1a| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Centre Upper Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Direction indicator flashing less than 60 times a minute Dont flash very often. |1.5.1c| | 1 |
| Handlebar handgrip not secure to handlebars. l/h grip pulls off bar. |2.1.1c| | 1 |
| Rear suspension component excessively corroded. swingarm rusted through underneath. |2.4.A.1a| | 1 |
| Brake locking device missing front brake lever pivot bolt lock nut missing. |3.2.A1e| | 1 |
| Clutch lever positioned so it cannot be readily operated. clutch not operating correcly/not returning |6.2.1g| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| All direction indicators not working blown flasher relay (replaced) (4.4.1 (a) (ii)) | 1 |
| Fuel tank leaking (6.1.3 (b) (i)) | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |