| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 60 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 42 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 25 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 24 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 23 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 21 |
| Steering headbearing has excessive free play |2.2.2| | 14 |
| Registration plate issues | 13 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 12 |
| Front wheel bearings have excessive free play |2.3.5b| | 11 |
| Rear reflector on motorcycle obscured |1.4.1| | 11 |
| Headlamp insecure |1.2.3b| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 5 |
| Front Headlamp insecure |1.2.3b| | 5 |
| Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Horn not working |1.7.3a| | 5 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 5 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Nearside Rear Direction indicators not working |1.5.1c| | 4 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Headlamp aim not tested |1.6| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 3 |
| Upper Steering headbearing has excessive free play |2.2.2| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Horn control defective |1.7.2a| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Rear Brake lever mounting insecure |3.1.2a| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Stop lamp missing |1.3.3a| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Throttle operating incorrectly |6.2.1f| | 2 |
| Headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Front Brake performance not tested |3.3| | 2 |
| Nearside Brake lever insecure |3.1.2a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Fuel cap sealing washer missing |7.2.2c| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Front position lamp damaged and function impaired |1.1.1b| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| All direction indicators not working |4.4.1 |a| |ii|| | 2 |
| An item not tested |Manual| | 2 |
| Fuel hose leaking |7.2.1a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Indicator switch defective |1.5.4| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Direction indicator not working |1.5.1c| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front position lamp insecure |1.1.1c| | 2 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Offside 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 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Front Upper Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake lever is inoperative |3.1.3c| | 1 |
| Rear Brake performance not tested |3.3| | 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 |
| Offside Brake lever attachment screws loose |3.1.2b| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Locking devices 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 main beam |1.2.2a|ii|| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Rear Brake lever has inadequate reserve travel pulls back to handlebars |3.1.3b| | 1 |
| Front Stop lamp missing not working |1.3.3a| | 1 |
| Rear Stop lamp missing not working |1.3.3a| | 1 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 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 |
| Centre Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Headlamp aim beam image too far to the left |1.6.4| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Front Front wheel has a loose wheel bolt|s| |4.2.3a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Inner Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Inner Front Upper Front position lamp insecure |1.1.1c| | 1 |
| Outer Front Lower Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Centre Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Nearside Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride centre stand does not retract and held by cable tie |6.2.1h| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Lower Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp remains on when the brake is released lever lubricated |1.3.1e| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Dipswitch does not operate immediately when selected on main beam |4.1.3 |b|| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Direction indicators not working all |1.5.1c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Decelerometer brake test neither brake control achieves an efficiency of 25% |3.3.E1c| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Inner Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |