| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 15 |
| Headlamp aim out of alignment | 11 |
| Registration plate issues | 10 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 8 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Horn not working |1.7.3a| | 7 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Rear Brake locking device missing |3.2.A1e| | 3 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Direction indicators not working |1.5.1c| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Offside Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Rear position lamp damaged and function impaired |1.1.1b| | 2 |
| Rear 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 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 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 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Rear Direction indicator missing |1.5.1a| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Fuel cap sealing washer missing |7.2.2c| | 2 |
| Front Front position lamp flickers when tapped lightly by hand |1.1.3c| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Brake locking device missing |3.2.A1e| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Headlamp switch faulty |1.2.4| | 1 |
| Centre Upper Fuel cap sealing washer missing |7.2.2c| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Centre Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Centre Front Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Inner Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Front Fuel system component leaking |7.2.1a| | 1 |
| Offside Front An item not tested |Manual| | 1 |
| Front mudguard can easily contact any fixed point of the motor bicycle. |2.3.7| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Brake cable insecure |1.1.15 |c|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Brake component is severely distorted |3.1.5| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Brake cable badly frayed |3.2.A1b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Offside Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Stop lamp does not illuminate immediately a brake applies off front lever |1.3.1a| | 1 |
| Front Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Brake lever mounting cracked |3.1.2c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Drive chain excessively tight |6.2.1d| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Upper Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Throttle operating incorrectly throttle does not return |6.2.1f| | 1 |
| Rear suspension bush has excessive free play bottom link bearing |2.4.A2a|i|| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake light switch does not function |1.3.1a| | 1 |