| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Horn not working |1.7.3a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Registration plate issues | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Horn control not functioning. |1.7.2b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front suspension assembly component loose top yoke nut |2.3.1| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Direction indicator affected by the operation of another lamp both rear |1.5.1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake excessively binding REAR BRAKE PIVOT SEIZED |1.2.1 |f|| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Offside Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released rear brake |1.3.1e| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Wheel spoke excessively loose spokes |4.2.1b| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Lower Brake locking device missing torque arm |3.2.A1e| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Throttle operating incorrectly carb top damaged |6.2.1f| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Stop lamp adversely affected by the operation of another lamp go off when indicators turned on (4.3.3 (b)) | 1 |
| All direction indicators adversely affected by the operation of another lamp stop flashing when brake activated (4.4.3 (b)) | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied excessive travel (1.1.2 (d)) | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Brake component insecure rear reaction bracket |1.1.21 |c|| | 1 |
| Rear Brake component insecure brake arm |1.1.21 |c|| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Front suspension assembly component missing |2.3.1| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| An item not tested |Manual| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Motorcycle structure adversely modified |6.1.1b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Brake lever excessively worn |1.1.15 |b|| | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Front Brake lever pivot has excessive free play Retaining nut loose (1.1.1 (b)) | 1 |