| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 31 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 15 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 14 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 12 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Front suspension has inadequate damping effect. |2.3.6c| | 8 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Horn not working |1.7.3a| | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Registration plate issues | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 3 |
| Rear Brake locking device missing |3.2.A1e| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Offside Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| An item not tested |Manual| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Footrest insecure |6.2.1a| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Nearside Rear suspension component cracked |2.4.A.1a| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Centre Front Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Rear Brake component is severely distorted |3.1.5| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Motorcycle structure is so deformed it is likely to adversely affect braking or steering frame (6.1.1 (a) (ii)) | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Throttle operating incorrectly not returning ready for strip sticking on |6.2.1f| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Front Front position lamp missing |1.1.1a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Offside Front Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Central Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Horn missing |1.7.1| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Offside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied to much travel (1.1.2 (d)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Front Hydraulic brake control feels spongy lever pulls back to bars |3.1.4a| | 1 |
| Front Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Nearside Front Brake locking device insecure |3.2.A1e| | 1 |
| Offside Brake locking device insecure |3.2.A1e| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Exhaust is leaking and excessively noisey silencer has hole in side |7.1.1b| | 1 |
| Stop lamp does not illuminate immediately a brake applies from operation of front brake |1.3.1a| | 1 |
| Front Brake lever cannot be applied smoothly lever operation feels rough,notchy |3.1.3d| | 1 |
| Brake pedal has inadequate reserve travel brake pedal hits exhaust before full braking efficiency achieved. rear brake did not lock rollers |3.1.3b| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Brake component leaking fluid rear caliper coated with brake fluid close to where exhaust fouls on banjo bolt |3.2.B4| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Rear Exhaust excessively deteriorated |7.1.1a| | 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 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Plate brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.B1c| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock throttle sticks on right hand lock. |2.1.4| | 1 |
| Position lamp switch insecure right hand switch gear insecure. |1.1.4b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride front axle pinch bolt loose. |6.2.1h| | 1 |
| Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Brake disc|s| insecure |3.2.A1g| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Rear Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Front Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Direction indicator insecure |1.5.3b| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Rear Rear mono-shock insecure |2.4.B.4| | 1 |
| Front Brake hose excessively stretched |1.1.12 |b| |ii|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Centre Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Headlamp aim does not move downwards when dipped |1.6.5| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |