| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 31 |
| Rear reflector on motorcycle missing |1.4.1| | 25 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 17 |
| Throttle operating incorrectly |6.2.1f| | 16 |
| Registration plate issues | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Horn not working |1.7.3a| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| 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| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Exhaust has part of the system missing baffle |7.1.1a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling front handle bars not aligned correctly |2.5.1| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Offside Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Brake locking device missing rear brake reaction bar |3.2.A1e| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Lower Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Central Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Exhaust is leaking and excessively noisey manifold |7.1.1b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Brake linked system has a seized caliper pivot. |3.2.B5| | 1 |
| Front Brake lever cracked |3.1.2c| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen BEAM KICK UP TO RIGHT HAND SIDE |4.1.2 |a|| | 1 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Throttle operating incorrectly NOT RETURNING |6.2.7 |a| |i|| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Stop lamp does not illuminate immediately a brake applies not working when rear brake applied |1.3.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Brake component cracked and seriously reduced in strength disc pad |3.2.A1| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Steering lock stop maladjusted |2.1.3| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Headlamp light intensity severely reduced pattern deteriated |4.1.4 |a|| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Nearside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Footrest missing Both |6.2.1a| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| An item not tested |Manual| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Centre Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Front Upper Horn not working |1.7.3a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Front suspension assembly component loose both fork leg top pinch bolts loose |2.3.1| | 1 |
| Nearside Steering lock stop maladjusted |2.1.3| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Brake hose is likely to be fouled or trapped by moving parts rear brake hose is being rubbed by the drive chain |3.2.B2c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride side stand mount bolt missing |6.2.1h| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Nearside Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Nearside Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil fork |2.3.3| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Position lamp light intensity significantly reduced |4.2.3 |a| |ii|| | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Throttle operating incorrectly sticks open does not return on its own |6.2.1f| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Offside Front Upper Throttle operating incorrectly Throttle holds open on full lock (6.2.7 (a) (i)) | 1 |
| Offside Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Stop lamp not working from control 1 (4.3.1 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Front Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Stop lamp not working Not working from front brake control (4.3.1 (a) (ii)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Throttle operating incorrectly NOT RETURNING (6.2.7 (a) (i)) | 1 |
| Valve stem seriously damaged RUBBER PERISHED (5.2.3 (j)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Brake component insecure SPLIT PIN MISSING (1.1.21 (c)) | 1 |
| Headlamp not working on main beam both main/dipped beams not working correctly> when switched (4.1.1 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak FRONT OFFSIDE FORK SEALS LEAKING EXCESSIVELY. (5.3.2 (b)) | 1 |
| Front Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Brake hose connection leaking (1.1.12 (c)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Headlamp not working on dipped beam see switch (4.1.1 (a) (ii)) | 1 |
| Offside Rear Lower Brake hose porous Rear Brake Hose from master cylinder porous (1.1.12 (e)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |