| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Horn not working |1.7.3a| | 8 |
| Registration plate issues | 8 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 6 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Brake locking device missing |3.2.A1e| | 3 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Fuel tank leaking |7.2.1a| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 2 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Brake pedal insecure |3.1.2a| | 2 |
| Rear Brake pedal attachment screws loose |3.1.2b| | 2 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Centre Front Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Shock absorber insecurely attached Both rear (5.3.2 (a) (i)) | 1 |
| Nearside Front Forks insecure (2.2.2 (d) (i)) | 1 |
| Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Rear Brake linkage has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake master cylinder severely damaged |3.2.B1b| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| An item not tested |Manual| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Centre Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Rear Upper Drive chain excessively loose |6.2.1d| | 1 |
| Front Stop lamp not working lever (4.3.1 (a) (ii)) | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Offside Front Front suspension assembly component loose |2.3.1| | 1 |
| Rear Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Motorcycle structure has a fracture which is likely to adversely affect braking or steering centre stand spring defective (6.1.1 (a) (ii)) | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Offside Rear 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 |
| Nearside Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Direction indicator not working |1.5.1c| | 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 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 1 |
| Brake pedal attachment screws loose |3.1.2b| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Brake component is excessively corroded |3.1.5| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Offside Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Brake lever mounting insecure |3.1.2a| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Motorcycle structure is deformed and structural rigidity is significantly reduced centre stand. |6.1.1 |a| |i|| | 1 |
| Headlamp not working on main beam high beam non operable |4.1.1 |a| |ii|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Upper Exhaust excessively deteriorated |7.1.1a| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |