| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Horn not working |1.7.3a| | 12 |
| Headlamp aim out of alignment | 9 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 7 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Registration plate issues | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Front Direction indicator not working |1.5.1c| | 3 |
| Rear Direction indicator not working |1.5.1c| | 3 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Horn sounds harsh or grating |1.7.3c| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 2 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Brake locking device missing |3.2.A1e| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Front Front wheel spindle securing nut locking device missing |2.3.5a| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Direction indicators affected by the operation of another lamp front indicators stop when brake light comes on |1.5.1c| | 1 |
| 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| | 1 |
| Rear wheel spindle securing nut locking device missing no split pin on rear spindal |2.4.A.2b| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear suspension component misaligned |2.4.A.1a| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Front Footrest missing |6.2.1a| | 1 |
| Front Brake cable has a significantly damaged outer casing. |3.2.A1b| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Centre Front Upper Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Centre Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Front Horn is not continous or uniform |1.7.3c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Front Brake cable badly frayed |3.2.A1b| | 1 |
| Front Front suspension has a modification which reduces the strength of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Brake component insecure |1.1.21 |c|| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Direction indicators not working All four |1.5.1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear shock absorber has inadequate damping effect. Rear shocks seized .Have no movement. |2.4.A.3b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 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 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Offside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Front Shock absorber has a serious fluid leak Both |5.3.2 |b|| | 1 |
| Rear Suspension component pin or bush excessively worn Swing arm |5.3.4 |a| |i|| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |