| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 52 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 40 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 31 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 30 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 22 |
| Steering headbearing has excessive free play |2.2.2| | 20 |
| Rear reflector on motorcycle missing |1.4.1| | 15 |
| Headlamp insecure |1.2.3b| | 14 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 12 |
| Horn not working |1.7.3a| | 12 |
| Registration plate issues | 11 |
| Throttle operating incorrectly |6.2.1f| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Rear reflector on motorcycle obscured |1.4.1| | 9 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Exhaust excessively deteriorated |7.1.1a| | 7 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Riders seat insecure |6.2.1a| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Front Steering headbearing has excessive free play |2.2.2| | 6 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Nearside Front Direction indicator not working |1.5.1c| | 5 |
| Nearside Rear Direction indicator not working |1.5.1c| | 5 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Nearside Rear Direction indicators not working |1.5.1c| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 4 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Headlamp insecure |1.2.3b| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Rear Rear reflector on motorcycle obscured |1.4.2b| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Headlamp switch faulty |1.2.4| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp aim not tested |1.6| | 2 |
| Horn is not continous or uniform |1.7.3c| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front position lamp insecure |1.1.1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Brake lever is inoperative |3.1.3c| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| An item not tested |Manual| | 2 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Front Handlebar deformed |2.1.1b| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 2 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Upper Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Front Upper Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Brake lever excessively damaged |3.2.A1c| | 1 |
| Rear Brake lever attachment screws loose |3.1.2b| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Offside Rear Lower Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Offside Front Upper Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Upper Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Rear Lower Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Rear Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| 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 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front Upper Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Exhaust system insecure mounting bracket not attached to hanger (6.1.2 (a)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen headlight fairing insecure (4.1.2 (a)) | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Centre Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Brake lever has inadequate reserve travel REAR |3.1.3b| | 1 |
| Front Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Wheel damaged or distorted to the extent that control of the motorcycle is likely to be adversely affected |5.2.2 |c| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Front Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Drive belt excessively tight |6.2.1d| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Centre Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Inner Front Lower Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Indicator tell tale not functioning |1.5.2| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Rear Exhaust mounting missing |7.1.1c| | 1 |
| Rear Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake cable badly frayed |3.2.A1b| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Front Upper Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Nearside Front Upper Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Offside Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Offside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies front lever switch |1.3.1a| | 1 |
| Front Fork yoke deformed |2.1.1b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Rear Upper Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Centre Rear An item not tested |Manual| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Rear position lamp insecure |1.1.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Brake lever insecure |3.1.2a| | 1 |
| Nearside Lower Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Brake component is severely distorted |3.1.5| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |