| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 44 |
| Drive chain excessively loose |6.2.1d| | 24 |
| Registration plate issues | 20 |
| Drive chain worn to excess |6.2.1e| | 18 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 17 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 15 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 15 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 13 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 11 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Drive chain excessively tight |6.2.1d| | 9 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 9 |
| Nearside Rear Footrest missing |6.2.1a| | 8 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 8 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 7 |
| Offside Rear Footrest missing |6.2.1a| | 7 |
| Horn not working |1.7.3a| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 7 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 6 |
| Rear Footrest missing |6.2.1a| | 6 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Headlamp insecure |1.2.3b| | 6 |
| Rear Brake locking device missing |3.2.A1e| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Rear Drive chain excessively loose |6.2.1d| | 5 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Wheel spoke excessively loose |4.2.1b| | 4 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 4 |
| Rear Drive chain worn to excess |6.2.1e| | 4 |
| Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 4 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 4 |
| Handlebar deformed |2.1.1b| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Rear Wheel spoke excessively bent |4.2.1b| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 3 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| An item not tested |Manual| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Horn is not a constant note |1.7.3c| | 2 |
| Rear Wheel spoke missing |4.2.1b| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Registration plate lamp issues | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 2 |
| Front Motorcycle structure excessively corroded |6.1.1a| | 2 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 2 |
| Front Headlamp damaged and function impaired |1.2.3a| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Centre Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded arm rubbing |3.2.A1h| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Fuel system component leaking carb (6.1.3 (b) (i)) | 1 |
| Front Front shock absorber seal failed and leaking oil both forks |2.3.3| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Front suspension has excessive corrosion which reduces the strength of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Rear Footrest missing both |6.2.1a| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear Wheel spindle loose |5.2.1 |c| |i|| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Lower Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear shock absorber has inadequate damping effect. Both sides |2.4.A.3b| | 1 |
| Rear wheel bearings have excessive free play Sprocket hub bearing u/s |2.4.A.2c| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Nearside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Stop lamp does not illuminate immediately a brake applies via front brake |1.3.1a| | 1 |
| Rear Lower Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced swingarm cross member has excessive corrosion |6.1.1 |c| |i|| | 1 |
| Central Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Brake rod insecure |1.1.15 |c|| | 1 |
| Offside Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Headlamp aim does not move downwards when dipped |1.6.5| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front position lamp does not face the front |1.1.1d| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Front Fork yoke deformed |2.1.1b| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Wheel spoke cracked. |4.2.1b| | 1 |
| Offside Rear Lower Brake locking device missing |3.2.A1e| | 1 |
| Nearside Rear Upper Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Offside Rear Lower Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Centre Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Offside Rear Brake locking device missing |3.2.A1e| | 1 |
| Offside Rear Brake locking device insecure |3.2.A1e| | 1 |
| Front Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling out of adjustment |2.5.1| | 1 |
| Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride rear brake arm |6.2.1h| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake performance not tested |3.3| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Suspension arm modified so the suspension is likely to fail other components FRAME CUT (5.3.3 (c) (ii)) | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |