| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 29 |
| Drive chain excessively loose |6.2.1d| | 18 |
| Registration plate issues | 17 |
| Headlamp aim beam image kick up to the offside |1.6| | 13 |
| Horn not working |1.7.3a| | 12 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 12 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear position lamp incorrect colour |1.1.2b| | 2 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Wheel spoke excessively loose |4.2.1b| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Brake pedal cannot be released smoothly Gets stuck down |3.1.3d| | 1 |
| Rear Rear suspension component seized |2.4A2a|ii|| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 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 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Stop lamp remains on when the brake is released rear brake |1.3.1e| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Brake locking device missing rear torque arm |3.2.A1e| | 1 |
| Rear Brake locking device insecure operating arm bolt loose |3.2.A1e| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Centre Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Outer Front Upper Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Offside 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| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| 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| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Upper Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Centre Front Riders seat insecure |6.2.1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Lower Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Front Brake lever not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Rear Drive chain excessively loose (6.2.1d) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Front Direction indicators not working (1.5.1c) | 1 |
| Rear Direction indicators not working (1.5.1c) | 1 |
| Front Horn not working (1.7.3a) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Suspension insecurely attached rear axle nut locking device missing (5.3.3 (a) (i)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Wheel fixing missing (multiple fixings) spindle castle nut split pin missing (5.2.1 (a) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Central Front Steering headbearing has excessive wear or free play head bearings excessive movement (2.2.2 (f) (i)) | 1 |
| Offside Rear Brake excessively binding rear brake excessively binding (1.2.1 (f)) | 1 |