| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 31 |
| Rear reflector on motorcycle missing |1.4.1| | 24 |
| Registration plate issues | 23 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 16 |
| Horn not working |1.7.3a| | 13 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Rear Brake hose which buldges |3.2.B4| | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear Wheel spoke missing |4.2.1b| | 3 |
| Rear Position lamp not working |4.2.1 |a|| | 3 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 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 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Rear Brake disc|s| securing bolt|s| missing |3.2.A1g| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Footrest insecure |6.2.1a| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Brake pedal pivots excessively worn |3.1.3a| | 2 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Offside Clutch lever shortened so it cannot be readily operated. ball off end of lever. |6.2.1g| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Steering damper ineffective |2.1.2d| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front Chain guard insecure |6.2.1c| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Front Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Offside Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake performance not tested |3.3| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| An item not tested |Manual| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Rear Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Brake component is severely distorted |3.1.5| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 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 adversely affected by the operation of the horn |1.1.3b| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Nearside Rear Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 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 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Centre Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Nearside Direction indicator missing |1.5.1a| | 1 |
| Offside Direction indicator missing |1.5.1a| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake hose fouling |3.2.B3b| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| All direction indicators missing |4.4.1 |a| |ii|| | 1 |
| Rear Footrest missing both pillion foot pegs missing |6.2.12 |a|| | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear wheel spindle securing nut locking device insecure Missing |2.4.A.2b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Brake lever mounting cracked |3.1.2c| | 1 |
| Rear Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Front Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Footrest insecure (6.2.12 (a)) | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Rear Brake disc|s| excessively worn worn below minimum |3.2.A1l| | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Lower Rear suspension bush has excessive free play bushes worn |2.4.A2a|i|| | 1 |
| Centre Rear Upper Rear position lamp deteriorated and function impaired light goes dimmer when engine revs rise and goes brighter when engine idles |1.1.1b| | 1 |
| Centre Rear Upper Exhaust has part of the system missing end cap missing and noisy |7.1.1a| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition end cap missing making bike noisy |7.1.2| | 1 |
| Wheel spoke missing |4.2.1b| | 1 |
| Rear Brake pedal mounting cracked . |3.1.2c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Front Brake hose stretched by steering movement |3.2.B3b| | 1 |
| Front Brake hose which buldges |3.2.B4| | 1 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Brake hose damaged | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 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 Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Wheel spindle locking device missing front & rear wheel spindle split pins missing (5.2.1 (d)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Front Wheel spoke missing |4.2.1b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Wheel spoke cracked. |4.2.1b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Brake lever attachment screws missing |3.1.2b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Chain guard insecure |6.2.1c| | 1 |
| Centre Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Nearside Rear Direction indicator lens defective such that the emitted light is adversely affected |4.4.1 |b| |ii|| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Upper Direction indicators not working |1.5.1c| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Front Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Wheel spoke missing (5.2.2 (d)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Offside Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Centre Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork (5.3.2 (b)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |