| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 37 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 7 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Registration plate lamp issues | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Horn not working |1.7.3a| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Nearside Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Offside Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Nearside Rear Direction indicator missing |1.5.1a| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Registration plate issues | 2 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Front Handlebar deformed |2.1.1b| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 2 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Centre Rear Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Stop lamp not working front switch faulty |4.3.1 |a| |ii|| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Direction indicators flashing less than 60 times a minute bad earth |1.5.1c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Centre Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Rear Upper Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Offside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Wheel spindle loose Spindle nut lose and wheel moving freely in adjuster guide (5.2.1 (c) (i)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Rear reflector on motorcycle missing (1.4.1) | 1 |
| Front Front wheel bearings are excessively rough (2.3.5b) | 1 |
| Rear Rear suspension movement is excessively stiff (2.4.A.3b) | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. (2.3.6b) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| An item not tested |Manual| | 1 |
| Rear Brake component is severely distorted |3.1.5| | 1 |
| Front Fork yoke deformed |2.1.1b| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Rear Lower Brake locking device missing |3.2.A1e| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Central Front Engine mounting/bracket bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Brake reaction bracket securing bolt|s| missing split pin missing |3.2.A1j| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Fuel pipe leaking |7.2.1a| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear spring worn and seriously weakened |2.4A1b|ii|| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Rear Upper Brake locking device missing |3.2.A1e| | 1 |
| Rear Drive chain fouling another component |6.2.1d| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Brake component inadequately mounted REAR TORQUE ARM INCORECTLY FITTED (1.1.21 (c)) | 1 |
| Centre Front Steering lock stop missing |2.1.3| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Nearside Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Front Indicator switch insecure |1.5.4| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Centre Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Centre Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Upper Brake linkage excessively corroded |3.2.A1c| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Throttle operating incorrectly |6.2.1f| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Nearside Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front suspension has inadequate damping effect. |2.3.6c| | 1 |