| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 56 |
| Rear reflector on motorcycle missing |1.4.1| | 18 |
| Registration plate issues | 17 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 14 |
| Horn not working |1.7.3a| | 14 |
| Steering headbearing has excessive free play |2.2.2| | 13 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Front wheel bearings have excessive free play |2.3.5b| | 11 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 11 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 11 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Direction indicators not working |1.5.1c| | 9 |
| Front Wheel spoke excessively loose |4.2.1b| | 9 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 9 |
| Rear Wheel spoke excessively loose |4.2.1b| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 7 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Front Front wheel spindle securing nut locking device missing |2.3.5a| | 3 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front Wheel spoke missing |4.2.1b| | 3 |
| Offside Rear Direction indicator missing |1.5.1a| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Horn is not a constant note |1.7.3c| | 2 |
| Horn control defective |1.7.2a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Wheel spoke cracked. |4.2.1b| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Wheel spoke missing |4.2.1b| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear reflector missing obscured (4.8.2 (a) (ii)) | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Direction indicators not working wont stay on longer than 30 seconds |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp rear light wired wrong way round stop lamp is dimmer than position lanp |1.3.2| | 1 |
| Front Front wheel has a missing wheel stud|s| |4.2.3a| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Rear Brake disc insecure Bolt missing (1.1.14 (a) (ii)) | 1 |
| Brake hose damaged | 1 |
| Rear Stop lamp showing white light to the rear (4.3.3 (a) (ii)) | 1 |
| Rear Stop lamp not working led interacting not correct (4.3.1 (a) (ii)) | 1 |
| Front Dipswitch does not operate immediately when selected on dipped beam switch wired incorrect main beam tell tell comes on when in dip mold (4.1.3 (b)) | 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 missing |7.1.1c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake fluid reservoir fluid level dangerously low (3.2.B1d) | 1 |
| Headlamp aim beam image kick up to the offside (1.6) | 1 |
| Central Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Rear Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Shock absorber has a serious fluid leak Front o/s fork leg |5.3.2 |b|| | 1 |
| Nearside Handlebar grip insecure to handlebar N/S handlebar grip |2.2.1 |d| |ii|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear wheel spindle securing nut locking device insecure split pin missing |2.4.A.2b| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Upper Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Nearside Front Upper Horn not working (7.7 (a) (ii)) | 1 |
| Central Front Upper Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Front Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Suspension arm ball joint excessively worn link arm-frame mount (5.3.4 (a) (i)) | 1 |
| Rear Suspension arm ball joint excessively worn link arm-frame -pivot arm upper (5.3.4 (a) (i)) | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Wheel spoke excessively loose front |4.2.1b| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| An item not tested |Manual| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Rear suspension component loose lock nut |2.4.A.1a| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Nearside Front Footrest insecure (locking device missing) (6.2.12 (a)) | 1 |
| Offside Front Footrest insecure (locking device missing) (6.2.12 (a)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected switch gear turning (6.2.7 (a) (ii)) | 1 |
| Central Rear Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Central Front Position lamp not working (4.2.1 (a)) | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Floor brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Brake lever mounting insecure |3.1.2a| | 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 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Centre Rear Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Centre Front Headlamp aim not tested |1.6| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Offside Wheel spoke excessively loose |4.2.1b| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear reflector on motorcycle dirty and function impaired |1.4.2a| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Drive chain excessively tight |6.2.1d| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |
| Front Brake lever cracked |3.1.2c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake pedal attachment screws loose |3.1.2b| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Wheel fractured significantly reducing the original strength |4.2.1a| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Lower Rear suspension component loose Shocker Bush Bolt Loose
|2.4.A.1a| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Centre Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Nearside Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|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 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Centre Exhaust mounting missing |7.1.1c| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |