| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Headlamp aim out of alignment | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 7 |
| Front Wheel spoke excessively loose |4.2.1b| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Wheel spoke excessively loose |4.2.1b| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Horn not working |1.7.3a| | 5 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Registration plate issues | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| 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| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on dipped beam and aim not tested |1.2.2a|i|| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Central Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Front Brake cable badly frayed |3.2.A1b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Fuel tank leaking tap (6.1.3 (b) (i)) | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Centre Horn not working |1.7.3a| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Motorcycle structure cracked |6.1.1a| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Outer Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |