| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 127 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 45 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 39 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 33 |
| Steering headbearing has excessive free play |2.2.2| | 33 |
| Horn not working |1.7.3a| | 31 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 30 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 29 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 29 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 27 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 25 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 22 |
| Registration plate issues | 21 |
| Rear reflector on motorcycle missing |1.4.1| | 20 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 20 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 18 |
| Drive chain excessively loose |6.2.1d| | 18 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 16 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 14 |
| Riders seat insecure |6.2.1a| | 13 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 13 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 12 |
| Headlamp aim beam image kick up to the offside |1.6| | 11 |
| Drive chain worn to excess |6.2.1e| | 11 |
| Headlamp insecure |1.2.3b| | 10 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 10 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 9 |
| Direction indicators not working |1.5.1c| | 9 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 9 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 8 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 7 |
| Nearside Front Direction indicator not working |1.5.1c| | 7 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Indicator switch defective |1.5.4| | 7 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 7 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 6 |
| Nearside Rear Direction indicator not working |1.5.1c| | 6 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Handlebar mounting clamp loose |2.1.1a| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 6 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 6 |
| Steering linkage has excessive free play |2.2.2| | 5 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 5 |
| Front Direction indicator incorrect colour |1.5.1b| | 5 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 5 |
| Headlamp aim not tested |1.6| | 5 |
| Direction indicator incorrect colour |1.5.1b| | 5 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Direction indicator not working |1.5.1c| | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Offside Front Direction indicator not working |1.5.1c| | 5 |
| Offside Rear Direction indicator not working |1.5.1c| | 5 |
| Fuel pipe leaking |7.2.1a| | 4 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 4 |
| Brake hose damaged | 4 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Nearside Rear Direction indicators not working |1.5.1c| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Nearside Front Direction indicator insecure |1.5.3b| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Front Front mudguard insecure |2.3.7| | 4 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 4 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 4 |
| Rear position lamp insecure |1.1.1c| | 4 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 4 |
| Offside Rear Direction indicator insecure |1.5.3b| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 3 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 3 |
| Front Wheel spoke excessively loose |4.2.1b| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Horn missing |1.7.1| | 3 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Lower Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Direction indicator not working |1.5.1c| | 3 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Rear Footrest missing |6.2.1a| | 3 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Headlamp switch faulty |1.2.4| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Rear Wheel spoke cracked (5.2.2 (d)) | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Front mudguard insecure |2.3.7| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Nearside Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 2 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Brake hose excessively deteriorated | 2 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 2 |
| Horn control not functioning. |1.7.2b| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Front Brake lever insecure |3.1.2a| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Rear wheel insecure |4.2.3b| | 2 |
| Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front suspension assembly component excessively bent |2.3.1| | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Upper Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Brake locking device insecure |3.2.A1e| | 2 |
| All direction indicators not working |4.4.1 |a| |ii|| | 2 |
| Offside Footrest insecure |6.2.1a| | 2 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Direction indicator insecure |1.5.3b| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Horn control defective |1.7.2a| | 2 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Centre Front Horn not working |1.7.3a| | 2 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Headlamp missing |1.2.3a| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Brake locking device missing |3.2.A1e| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Front mudguard insecure |2.3.7| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Offside Front Upper Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |