| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 37 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 20 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 14 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Throttle operating incorrectly |6.2.1f| | 12 |
| Drive chain excessively loose |6.2.1d| | 12 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 9 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Drive chain worn to excess |6.2.1e| | 7 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 7 |
| Horn not working |1.7.3a| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Registration plate issues | 5 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 5 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 4 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Headlamp insecure |1.2.3b| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front Brake disc|s| cracked |3.2.A1g| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Offside Handlebar deformed |2.1.1b| | 3 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Rear mono-shock pivot seized |2.4.B.4| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Handlebar deformed |2.1.1b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Offside Exhaust excessively deteriorated |7.1.1a| | 2 |
| Fuel hose leaking |7.2.1a| | 2 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Fuel tank leaking |7.2.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Exhaust has part of the system missing |7.1.1a| | 1 |
| Offside Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake component is excessively corroded |3.1.5| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Offside Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Footrest missing both |6.2.1a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Brake caliper insecure both bolts slack |1.1.16 |c| |i|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Nearside Front Upper Indicator tell tale not operating correctly |1.5.2| | 1 |
| Stop lamp does not illuminate immediately a brake applies from operation of front brake |1.3.1a| | 1 |
| Rear Drive chain sprocket carrier worn to excess play in bearing |6.2.1e| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Centre Rear Lower An item not tested |Manual| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Lower Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on side light |1.1.3a| | 1 |
| Steering control handlebar movement restricted by taut cables throttle cables |2.1.2c| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Front suspension assembly component loose Upper fork tube not clamped in lower yoke |2.3.1| | 1 |
| Steering lock stop ineffective left lock excessive front brake lever fouling |2.1.3| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Offside Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded rear brake pedal is hitting belly pan when applied. |3.2.A1h| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Front An item not tested |Manual| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Motorcycle structure cracked |6.1.1a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Headlamp aim beam image too far to the left |1.6.4| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Steering lock stop loose |2.1.3| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Fuel tank leaking Lower L/H side of tank is leeking |7.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 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 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Inner Rear Direction indicators not working |1.5.1c| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Steering operation restricted in free movement from lock to lock hqandle bar catching tank (2.1.4 (c)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Brake master cylinder insecure (1.1.10 (c)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Suspension attachment bracket/mounting insecure Upper pivot pivot bolt. (5.3.3 (a) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front & rear (4.3.2 (a) (iii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Registration plate lamp issues | 1 |
| Front Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Offside Front Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 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 |
| Throttle operating incorrectly Sticks with steering turned fully to the left (6.2.7 (a) (i)) | 1 |