| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 28 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Registration plate issues | 9 |
| Drive chain worn to excess |6.2.1e| | 7 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Wheel spoke excessively loose |4.2.1b| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Offside Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Brake hose damaged | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Rear suspension bearing has excessive free play linkage bearing at swing arm pivot |2.4.A2a|i|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake locking device insecure split pin in in rear brake pedal |3.2.A1e| | 1 |
| Drive chain excessively loose Tensioner braking up and fouling chaln |6.1.7 |c| |i|| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Horn control not readily accesible. |1.7.2a| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Horn missing |1.7.1| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Horn is not a constant note |1.7.3c| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake master cylinder leaking |1.1.10 |b| |ii|| | 1 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Centre Front Inner Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Centre Rear Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Centre Front Upper Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Horn not working |1.7.3a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies Lever |1.3.1a| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Front wheel insecure |4.2.3b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Lower Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 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 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Wheel spoke excessively corroded |4.2.1b| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake lever |1.3.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Lower Brake disc|s| cracked |3.2.A1g| | 1 |
| Centre Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 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 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Front Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Offside Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Lower Suspension component pin or bush excessively worn linkage (5.3.4 (a) (i)) | 1 |
| Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Headlamp aim beam image kick up to the offside (1.6) | 1 |
| Exhaust is leaking and excessively noisey (7.1.1b) | 1 |
| Offside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Central Rear Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Central Rear Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Nearside Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases Rear box (6.1.2 (a)) | 1 |
| Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Nearside Direction indicator not working Front and rear (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Rear mono-shock pivot excessively worn (2.4.B.4) | 1 |
| Front Front wheel bearings have excessive free play (2.3.5b) | 1 |
| Front Brake back plate(s) securing bolt(s) missing (3.2.A1j) | 1 |
| Front Floor brake test indicates a binding brake (3.3.C2c) | 1 |