| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 15 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Registration plate issues | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Brake hose excessively deteriorated | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front suspension assembly component loose |2.3.1| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Horn not working |1.7.3a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear position lamp does not face the rear |1.1.1d| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Front mudguard can easily contact any fixed point of the motor bicycle. |2.3.7| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Brake lever excessively damaged |3.2.A1c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Front An item not tested |Manual| | 1 |
| Handlebar so insecure it is likely to become detached loose on rubber mounting bushes (2.2.1 (b) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Suspension component pin or bush excessively worn Rear suspension linkage & shock absorber bearings - up & down play (5.3.4 (a) (i)) | 1 |
| Rear Brake pedal pivot has excessive free play Pedal pivot bolt loose (1.1.1 (b)) | 1 |
| Rear Brake pedal has insufficient reserve travel Touches bolt - when fully applied (1.1.2 (a)) | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Centre Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Fork yoke excessively deformed (2.2.2 (d) (i)) | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Handlebar mounting so insecure that steering is adversely affected rubber mounts worm (2.2.1 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected sticks open (6.2.7 (a) (ii)) | 1 |
| Rear Exhaust system insecure (6.1.2 (a)) | 1 |
| Suspension arm attachment bracket/mounting insecure swing arm (5.3.3 (a) (i)) | 1 |
| Rear Brake grabbing severely radius arm lose (1.2.1 (c)) | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Front wheel spindle loose |2.3.5a| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Front Front wheel insecure |4.2.3b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Front Steering linkage has excessive free play |2.2.2| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Brake lever pivots excessively worn |3.1.3a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Brake hose damaged | 1 |
| Front position lamp damaged and function impaired no beam pattern |1.1.1b| | 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 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| 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 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |