| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 45 |
| Registration plate issues | 43 |
| Rear reflector on motorcycle missing |1.4.1| | 28 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 27 |
| Front Wheel spoke excessively loose |4.2.1b| | 21 |
| Front wheel bearings have excessive free play |2.3.5b| | 20 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 14 |
| Horn not working |1.7.3a| | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 12 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 12 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 10 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 9 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 9 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Rear Footrest missing |6.2.1a| | 8 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 8 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 7 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 7 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 7 |
| Rear Wheel spoke excessively loose |4.2.1b| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 5 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 4 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Direction indicator missing |1.5.1a| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear Drive chain worn to excess |6.2.1e| | 3 |
| Rear position lamp insecure |1.1.1c| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Front Brake performance not tested |3.3| | 2 |
| Rear Brake performance not tested |3.3| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Wheel spoke missing |4.2.1b| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Brake hose damaged | 2 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 2 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 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 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 2 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 2 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Horn is not continous or uniform |1.7.3c| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Offside Front Direction indicator missing |1.5.1a| | 2 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Offside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on not working |1.1.3a| | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure Rear Axle Nut has no split pin fitted |6.1.1 |b| |i|| | 1 |
| Headlamp aim not tested Dipped Beam not working |4.1.2 |b|| | 1 |
| Central Front Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear suspension bearing has excessive free play link arm |2.4.A2a|i|| | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Front Wheel fixing missing (multiple fixings) (5.2.1 (a) (i)) | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Wheel spoke excessively loose x2 (5.2.2 (d)) | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride Wheel spindle. |6.2.1h| | 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 |
| Rear Headlamp reflector missing |4.1.1 |b| |ii|| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Rear Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Front Wheel spoke excessively loose more than one spoke loose |4.2.1b| | 1 |
| Rear Wheel spoke excessively loose more than one spoke loose |4.2.1b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Horn emits 2 or more alternating tones |1.7.3b| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Brake hose leaking fluid |3.2.B4| | 1 |
| Throttle operating incorrectly stiff |6.2.1f| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Rear Direction indicator obviously incorrectly positioned Both (4.4.3 (a)) | 1 |
| Brake lever mounting cracked |3.1.2c| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Fuel system component leaking fuel tap (6.1.3 (b) (i)) | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake pipe excessively damaged |3.2.B2a| | 1 |
| Rear reflector on motorcycle dirty and function impaired |1.4.2a| | 1 |
| Offside Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 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 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen Headlight aim dips to the right (4.1.2 (a)) | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Front Front position lamp missing |1.1.1a| | 1 |
| Rear Brake cylinder insecure Brake master cylinder clevis pin split pin missing (1.1.16 (c) (i)) | 1 |
| Drive chain excessively loose Adjustment required (6.1.7 (c) (i)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Brake performance not tested |3.3| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicator not working all |1.5.1c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Exhaust has part of the system missing |7.1.1a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Wheel spindle or securing nut|s| so insecure that wheel security or steering control is adversely affected spindle clamp factured |5.2.1 |c| |ii|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies brake |1.3.1a| | 1 |
| Offside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear position lamp deteriorated and function impaired tail light too dull |1.1.1b| | 1 |
| Rear position lamp obscured more than 50% tail light hidden under rear fender,not easily visible |1.1.1d| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen beam pattern gives a circle of light, beam pattern not recognised |1.6.B.1| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Horn missing |1.7.1| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Centre Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake hose bulging under pressure (1.1.12 (d)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Front Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Central Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Central Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Front All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Rear All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Rear Brake fluid reservoir fluid level significantly below minimum level |1.1.10 |d| |ii|| | 1 |
| Central Rear Suspension arm pin or bush excessively worn linkage bush |5.3.4 |a| |i|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Nearside Rear Direction indicator obscured |1.5.1a| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Front Footrest insecure (6.2.12 (a)) | 1 |
| Fuel system component leaking float bowl? (6.1.3 (b) (i)) | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Brake pedal attachment screws loose |3.1.2b| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Central Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Central Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen Kick up wrong way. European light. |4.1.2 |a|| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |