| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 36 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 18 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Horn not working |1.7.3a| | 17 |
| Drive chain excessively loose |6.2.1d| | 16 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 16 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 15 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 15 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Drive chain worn to excess |6.2.1e| | 12 |
| Registration plate issues | 12 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 10 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 7 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 7 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 5 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 4 |
| Rear Brake locking device missing |3.2.A1e| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 4 |
| Rear Wheel spoke missing |4.2.1b| | 4 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 4 |
| Front Wheel spoke excessively loose |4.2.1b| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 3 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 3 |
| Brake locking device missing |3.2.A1e| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Drive chain excessively tight |6.2.1d| | 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 |
| Handlebar deformed |2.1.1b| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Front Front mudguard insecure |2.3.7| | 2 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Offside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Nearside Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain link fitted wrong direction |6.2.1h| | 1 |
| Brake locking device missing both split pins missing from reaction rod |3.2.A1e| | 1 |
| Rear suspension bearing has excessive free play SWING ARM |2.4.A2a|i|| | 1 |
| Fuel system component leaking CARBURETOR BODY LEAKING |7.2.1a| | 1 |
| Rear wheel rotation likely to be impeded FOULING REAR FENDER L/H |6.2.1b| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Inner Front Chain guard insecure |6.2.1c| | 1 |
| Nearside Front Upper Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicator not working |ALL| |1.5.1c| | 1 |
| Brake locking device insecure REAR BRAKE CABLE LOCK NUT ON WRONG SIDE. |3.2.A1e| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on not working |1.1.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake light not working |1.3.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake light not working |1.3.1a| | 1 |
| Headlamp at least one does not illuminate on main beam no main beam |1.2.2a|ii|| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Centre Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Centre Front Upper Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Throttle operating incorrectly Sticking |6.2.1f| | 1 |
| Nearside Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Offside Front Steering lock stop maladjusted |2.1.3| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 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 |
| Offside Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Front Lower Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear 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 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Centre Front Lower Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Centre Rear Upper Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Front Horn is not a constant note |1.7.3c| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Offside Front Steering lock stop missing |2.1.3| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Wheel spoke missing |4.2.1b| | 1 |
| Rear Wheel spoke missing 2 spokes broken |4.2.1b| | 1 |
| Rear Wheel spoke missing 2x spokes broken |4.2.1b| | 1 |
| Front Wheel spoke missing Broken |4.2.1b| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Handlebar mounting excessively deteriorated |flexible type| ?
play in rubbers? |2.1.1d| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Rear Brake cable badly frayed |3.2.A1b| | 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 |
| Central Rear Stop lamp does not illuminate immediately a brake applies Stop lamp not working when front brake is applied |1.3.1a| | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Offside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Offside Front Upper Brake component damaged and seriously reduced in strength front brake master cylinder banjo damaged |3.2.A1| | 1 |
| Rear Wheel spoke excessively bent |4.2.1b| | 1 |
| Steering linkage locking device missing no steering stop |2.1.3 |d|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Throttle operating incorrectly loose |6.2.7 |a| |i|| | 1 |
| Front Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| An item not tested |Manual| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded cable not seated correctly near foot brake |3.2.A1h| | 1 |
| Front Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Lower Brake locking device insecure |3.2.A1e| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Upper Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Nearside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Lower Brake component insecure split pin missing |1.1.21 |c|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Nearside Headlamp switch insecure |1.2.4| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Roller brake test indicates a sticking brake (3.3.A1a) | 1 |
| Exhaust is leaking and excessively noisey (7.1.1b) | 1 |
| Steering lock stop ineffective (2.1.3) | 1 |
| Offside Front Direction indicator insecure (1.5.3b) | 1 |
| Front Floor brake test indicates a sticking brake (3.3.C2c) | 1 |
| Drive chain excessively tight poor condition (6.2.1d) | 1 |
| Headlamp aim beam image kick up to the offside (1.6) | 1 |
| Headlamp switch faulty (1.2.4) | 1 |
| Drive chain excessively loose (6.2.1d) | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam (1.2.2a(ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure mudguard (6.1.1 (b) (i)) | 1 |
| Rear Brake component inadequately mounted no split pins in brake arm bolts (1.1.21 (c)) | 1 |