| Most common failures | No# failures |
|---|
| Registration plate issues | 52 |
| Rear reflector on motorcycle missing |1.4.1| | 45 |
| Headlamp aim out of alignment | 29 |
| Horn not working |1.7.3a| | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear Wheel spoke excessively loose |4.2.1b| | 4 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Horn missing |1.7.1| | 4 |
| 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| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Front Wheel spoke excessively loose |4.2.1b| | 3 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Wheel spoke missing |4.2.1b| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Registration plate lamp issues | 1 |
| Offside Rear Suspension rod attachment bracket/mounting insecure locknut loose |5.3.3 |a| |i|| | 1 |
| Nearside Headlamp switch insecure |1.2.4| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Lower Brake locking device missing |3.2.A1e| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Fork yoke in such a condition that steering control is adversely affected |2.2.2 |d| |ii|| | 1 |
| Nearside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Front Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Headlamp switch insecure hi and low switch
|1.2.4| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Throttle operating incorrectly Engine Speed Increases On Right Hand Lock (6.2.7 (a) (i)) | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake disc|s| excessively worn Min thickness 3.5mm actual thickness 1.65mm |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Drive chain excessively tight drive chain links tight on various points |6.2.1d| | 1 |
| Drive chain sprocket worn to excess front and rear sprockets worn |6.2.1e| | 1 |
| Wheel spoke missing spoke missing on rear wheel |4.2.1b| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Central Rear Wheel spoke excessively loose 5 loose spokes (5.2.2 (d)) | 1 |
| Central Rear Drive chain worn to excess excessive side ways movement and can lift up on sprocket teeth 50 percent of tooth height (6.1.7 (c) (i)) | 1 |
| Nearside Rear Drive chain sprocket worn to excess sprocket teeth hooked and worn (6.1.7 (c) (i)) | 1 |
| Central Fuel system component leaking fuel leaking either from carb bowl over flow or bowl (6.1.3 (b) (i)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| An item not tested |Manual| | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Lower Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced frame rail corroded and holed (6.1.1 (c) (i)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Fuel system component leaking carb |7.2.1a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Rear Exhaust silencer insecure |8.1.1 |b| |i|| | 1 |
| Offside Rear Exhaust markings indicating not for road use or similar wording |6.1.2 |c|| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing rear spindle not fitted through rearbrake caliper |3.2.A1j| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |