| Most common failures | No# failures |
|---|
| Registration plate issues | 18 |
| Headlamp aim out of alignment | 18 |
| Rear reflector on motorcycle missing |1.4.1| | 13 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Throttle operating incorrectly |6.2.1f| | 7 |
| Horn not working |1.7.3a| | 6 |
| 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| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Indicator tell tale not functioning |1.5.2| | 3 |
| All direction indicators missing (4.4.1 (a) (ii)) | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 2 |
| Offside 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 wheel bearings have excessive free play |2.4.A.2c| | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Brake lever has insufficient reserve travel Very spongy, lever comes back to bars (1.1.2 (a)) | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 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 Position lamp not working |4.2.1 |a|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Fuel system component leaking |7.2.1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Direction indicator not working O/S REAR |4.4.1 |a| |ii|| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Front Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Rear Upper Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Offside Front Footrest missing |6.2.1a| | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Upper Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Offside Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Horn control not readily accesible. |1.7.2a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls switch (4.3.2 (a) (iii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies Both front and rear |1.3.1a| | 1 |
| Exhaust mounting does not fully support the exhaust system Rear silencer mount cracked |7.1.1.c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Wheel more than one fixing loose ADJUSTER LOOSE (5.2.1 (a) (ii)) | 1 |