| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 45 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Registration plate issues | 14 |
| Drive chain excessively loose |6.2.1d| | 13 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 13 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Horn not working |1.7.3a| | 8 |
| 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| | 7 |
| Exhaust excessively deteriorated |7.1.1a| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Stop lamp remains on when the brakes are released | 6 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| 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| | 3 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Footrest missing (6.2.12 (a)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Fuel system component leaking |7.2.1a| | 1 |
| Offside Throttle operating incorrectly |6.2.1f| | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Rear mono-shock insecure |2.4.B.4| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Centre Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Central Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Outer Front Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Outer Front Lower Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear wheel bearings are excessively tight |2.4.A.2c| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Inner Fuel hose leaking (6.1.3 (b) (i)) | 1 |
| Front Lower Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Central Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Offside Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Offside Front mudguard insecure |2.3.7| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen headlamp is designed for right hand drive subsequently kick up wrong side (4.1.2 (a)) | 1 |
| All direction indicators adversely affected by the operation of another lamp all effected by operation of brake lamp operation front and rear (4.4.3 (b)) | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Rear suspension component cracked |2.4.A.1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Brake hose damaged | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim not tested Dip beam not working (4.1.2 (b)) | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Brake caliper inadequately mounted fouling on disc (1.1.16 (c) (i)) | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Shock absorber likely to become detached (5.3.2 (a) (ii)) | 1 |
| Throttle operating incorrectly THROTTLE GRIP LOOSE (6.2.7 (a) (i)) | 1 |
| Rear Brake pedal anti-slip provision loose |1.1.2 |c|| | 1 |
| Stop lamp not working on rear control (4.3.1 (a) (ii)) | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Drive chain sprocket carrier worn to excess bearing |6.2.1e| | 1 |
| Front Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Lower Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Handlebar handgrip not secure to handlebars. Throttle |2.1.1c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Drive chain excessively loose (6.2.1d) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 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 |
| Offside Rear Footrest insecure (6.2.1a) | 1 |
| Stop lamp not working On rear brake (4.3.1 (a) (ii)) | 1 |
| Offside Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Headlamp aim not tested (4.1.2 (b)) | 1 |
| Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Nearside Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Offside Front Brake hose excessively stretched (1.1.12 (b) (ii)) | 1 |
| Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Brake clevis joint insecure (1.1.15 (c)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen LED aftermarket headlamp fitted no pattern on dazzle given off (4.1.2 (a)) | 1 |
| Headlamp light source and lamp not compatible LED aftermarket headlamp fitted ,no pattern viable on beam testing machine, on dazzle given off (4.1.4 (c)) | 1 |
| Inner Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Inner Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Brake back plate|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Clutch lever positioned so it cannot be readily operated. operates the flash button when pulled in |6.2.1g| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front 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 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp at least one does not illuminate on dipped beam dip beam bulb does not illuminate |1.2.2a|i|| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |