| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 36 |
| Drive chain excessively loose |6.2.1d| | 17 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 17 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 12 |
| Throttle operating incorrectly |6.2.1f| | 9 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 9 |
| Drive chain worn to excess |6.2.1e| | 9 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 9 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Registration plate issues | 7 |
| Drive chain excessively tight |6.2.1d| | 7 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 6 |
| Horn not working |1.7.3a| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Registration plate lamp issues | 5 |
| Offside Handlebar deformed |2.1.1b| | 4 |
| Nearside Handlebar deformed |2.1.1b| | 4 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Offside Front Direction indicator insecure |1.5.3b| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 3 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Centre Exhaust excessively deteriorated |7.1.1a| | 2 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear mono-shock pivot seized |2.4.B.4| | 2 |
| Rear Rear mono-shock pivot seized |2.4.B.4| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Brake performance not tested |3.3| | 2 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 2 |
| Nearside Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Indicator switch defective |1.5.4| | 1 |
| Rear Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride split link |6.2.1h| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Nearside Rear Footrest insecure |6.2.12 |a|| | 1 |
| Nearside Rear Exhaust silencer insecure |8.1.1 |b| |i|| | 1 |
| Offside Rear Exhaust system insecure |6.1.2 |a|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Lower Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Upper Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Rear Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Outer Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 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 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Brake performance not tested |3.3| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Nearside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Handlebar excessively deformed |2.2.1 |c| |i|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake lever excessively worn |1.1.15 |b|| | 1 |
| Rear Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Front Headlamp insecure |4.1.1 |c|| | 1 |
| Front Headlamp aim not tested |4.1.2 |b|| | 1 |
| Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Front Handlebar deformed to the extent that steering is affected |2.2.1 |c| |ii|| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 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 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Steering headbearing excessively stiff or notchy stiff and notchy |2.2.2 |f| |i|| | 1 |
| Suspension arm pin or bush excessively worn seized linkages |5.3.4 |a| |i|| | 1 |
| Rear wheel spindle securing nut locking device missing split pin missing |2.4.A.2b| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Front Upper Handlebar deformed |2.1.1b| | 1 |
| Offside Front Upper Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Wheel fixing loose |multiple fixings| |5.2.1 |a| |i|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Rear Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Throttle operating incorrectly not returning |6.2.7 |a| |i|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| An item not tested |Manual| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Brake hose damaged | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Centre Rear Lower Rear suspension bearing has excessive free play botton shock bearing |2.4.A2a|i|| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Brake excessively binding FRONT & REAR (1.2.1 (f)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Suspension component likely to become detached axle split pin missing (5.3.3 (a) (ii)) | 1 |
| Front Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Stop lamp not working Replaced bulb (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Fuel system component leaking TAP AREA (6.1.3 (b) (i)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Offside Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Front Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Central Rear Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Nearside Front Direction indicator likely to become detached (4.4.1 (c) (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 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |