| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 24 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Registration plate issues | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Horn not working |1.7.3a| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Brake hose excessively deteriorated | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| 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 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Direction indicators affected by the operation of another lamp (1.5.1c) | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Offside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Nearside Front Direction indicator missing (1.5.1a) | 1 |
| Offside Front Direction indicator missing (1.5.1a) | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute (1.5.1c) | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute (1.5.1c) | 1 |
| Rear Wheel spoke excessively loose (4.2.1b) | 1 |
| Nearside Exhaust is leaking and excessively noisey (7.1.1b) | 1 |
| Drive chain excessively loose (6.2.1d) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.5.1) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 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 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Offside Outer Front Lower Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp not working Rear position not working |4.2.1 |a|| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear Brake locking device insecure rear clevis split pin missing |3.2.A1e| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Front Horn not working |1.7.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Inner Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Front Fuel system component leaking |7.2.1a| | 1 |
| Centre Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Offside Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Direction indicator incorrect colour (1.5.1b) | 1 |
| Rear Direction indicator incorrect colour (1.5.1b) | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Offside Rear Upper Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Fuel system component leaking |7.2.1a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Fuel cap missing |7.2.2a| | 1 |
| Front Brake hose which buldges |3.2.B4| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Inner Fuel system component leaking |7.2.1a| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Nearside Front Front suspension assembly component excessively corroded. stanchion |2.3.1| | 1 |
| Offside Front Front suspension assembly component excessively corroded. stanchion |2.3.1| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 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 Exhaust has part of the system missing |7.1.1a| | 1 |
| Offside Rear Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Rear Wheel spoke excessively bent |4.2.1b| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Brake lever attachment screws missing Front brake pivot bolt nut missing because bolt is not long enough. |3.1.2b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. L/h grip spins on handle bar. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. R/h grip spins on bar. |2.1.1c| | 1 |
| Braking system does not have an approriate system/s fitted according to its age |3.1.1| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 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 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Centre Front Upper Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Centre Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |