| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 25 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Headlamp aim out of alignment | 10 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Registration plate issues | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Fuel system component leaking |7.2.1a| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Indicator switch insecure |1.5.4| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Horn not working |1.7.3a| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 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 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear suspension bush has excessive free play swing arm |2.4.A2a|i|| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Horn missing |1.7.1| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Front Indicator tell tale not functioning |1.5.2| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Footrest missing (6.2.12 (a)) | 1 |
| Offside Front Stop lamp not working brake lever (4.3.1 (a) (ii)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front Headlamp switch insecure |1.2.4| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain fouling another component |6.2.1d| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Chain guard insecure |6.2.1c| | 1 |