| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 39 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 28 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 27 |
| Rear reflector on motorcycle missing |1.4.1| | 19 |
| Drive chain excessively loose |6.2.1d| | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 13 |
| Registration plate issues | 12 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 7 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 7 |
| Horn not working |1.7.3a| | 6 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Direction indicators not working |1.5.1c| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Rear Drive chain excessively loose |6.2.1d| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Brake locking device missing |3.2.A1e| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Brake locking device missing |3.2.A1e| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Registration plate lamp issues | 3 |
| Front Brake disc|s| insecure |3.2.A1g| | 3 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp aim not tested |1.6| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Offside Front Brake disc|s| insecure |3.2.A1g| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Fuel tank leaking |7.2.1a| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Nearside Front suspension assembly component cracked |2.3.1| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Upper Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear mono-shock pivot seized |2.4.B.4| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| 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 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Brake cylinder leaking hydraulic fluid Caliper is leaking fluid!! |3.2.B1e| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock (2.1.4) | 1 |
| Offside Direction indicator not working (1.5.1c) | 1 |
| Exhaust is leaking and excessively noisey (7.1.1b) | 1 |
| Drive chain excessively loose (6.2.1d) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Rear Position lamp not working no rear light (4.2.1 (a)) | 1 |
| Front Shock absorber has negligible damping effect no damping on front forks (5.3.2 (b)) | 1 |
| Front Brake disc significantly and obviously worn bobbins are worn excessivly (1.1.14 (a) (i)) | 1 |
| Rear Drive chain excessively loose rear chain worn and loose (6.1.7 (c) (i)) | 1 |
| Front Brake master cylinder defective but brake still operating master cylinder is stiff and notchy (1.1.10 (b) (i)) | 1 |
| Rear Brake has no recorded effort at a wheel rear brake does not work (1.2.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Upper Headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Headlamp missing |1.2.3a| | 1 |
| Rear Rear suspension has a modification which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Nearside Rear All direction indicators light intensity significantly reduced (4.4.3 (a)) | 1 |
| Nearside Front Upper Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Offside Front Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Nearside Front Upper Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Drive chain sprocket excessively loose |6.1.7 |c| |i|| | 1 |
| Offside Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front Exhaust has part of the system missing |7.1.1a| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Centre Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Brake reaction bracket insecure split pin missing |3.2.A1j| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Centre Front Lower Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Front Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear Drive belt sprocket worn to excess |6.2.1e| | 1 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Steering lock stop maladjusted |2.1.3| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Steering damper in such a condition that the steering action is impaired. |2.1.2d| | 1 |
| Rear Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Brake component has an inadequate repair |3.1.5| | 1 |
| Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Front Brake lever cracked |3.1.2c| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Fuel cap missing |7.2.2a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Offside Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Upper Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Steering headbearing excessively stiff or notchy steering stiff (2.2.2 (f) (i)) | 1 |
| Front Valve stem seriously damaged split (5.2.3 (j)) | 1 |
| Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front An item not tested |Manual| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Offside Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Front Front position lamp missing |1.1.1a| | 1 |
| Rear Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Fuel system component leaking carb leaking |6.1.3 |b| |i|| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Centre Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 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 |
| Nearside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Brake linkage clevis joint excessively worn both on rear tie bar |3.2.A1d| | 1 |
| Steering lock stop ineffective both |2.1.3| | 1 |
| Rear Brake hose which buldges |3.2.B4| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Offside Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Lower Rear suspension component loose |2.4.A.1a| | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| All direction indicators incorrect colour All four indicators showing white light. (4.4.3 (a)) | 1 |
| Front Brake master cylinder defective but brake still operating Brake lever actuation is not smooth (ratcheting action) (1.1.10 (b) (i)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Nearside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Nearside Front Brake cylinder severely corroded |3.2.B1b| | 1 |
| Offside Front Brake cylinder severely corroded |3.2.B1b| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Lower Brake disc|s| insecure |3.2.A1g| | 1 |
| Offside Front Lower Brake disc|s| insecure |3.2.A1g| | 1 |
| Brake reaction bracket securing bolt|s| loose split pin missing |3.2.A1j| | 1 |
| Front Horn is not continous or uniform |1.7.3c| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front All position lamps not working (4.2.1 (a)) | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Offside Brake disc|s| insecure |3.2.A1g| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 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 |
| Shock absorber has a serious fluid leak Both (5.3.2 (b)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Brake rod insecure Adjusting nut (1.1.15 (c)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Exhaust silencer likely to become detached Restricting swing arm movements (8.1.1 (b) (ii)) | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Front Wheel damaged or distorted to the extent that control of the motorcycle is likely to be adversely affected (5.2.2 (c) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |