| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Registration plate issues | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Offside Rear Footrest missing |6.2.1a| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 5 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 5 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear Footrest missing |6.2.1a| | 4 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Chain guard insecure |6.2.1c| | 4 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Horn not working |1.7.3a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Front suspension assembly component loose |2.3.1| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Direction indicator not working |1.5.1c| | 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 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Brake component has an inadequate repair |3.1.5| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Horn is not continous or uniform |1.7.3c| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Brake lever pivots excessively worn |3.1.3a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Offside Rear Lower Rear shock absorber insecurely mounted nyloc nut not engaged on stud |2.4.A.3b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake fluid reservoir severely corroded |3.2.B1b| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain sprocket carrier worn to excess bearing |6.2.1e| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake component leaking fluid caliper |3.2.B4| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Nearside Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Front Built up wheel has a loose bolt/s |4.2.1c| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain split pin in the wrong way round |6.2.1h| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket locking devices |6.2.1h| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride trailing arm split pin missing |6.2.1h| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Suspension component corroded and seriously weakened (5.3.3 (b) (i)) | 1 |
| Position lamp missing (4.2.1 (a)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Nearside Rear Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Braking system does not have an approriate system/s fitted according to its age |3.1.1| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Stop lamp not working Not working from brake pedal. |4.3.1 |a| |ii|| | 1 |
| Footrest missing Both rear. |6.2.12 |a|| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Rear wheel has a loose wheel bolt|s| |4.2.3a| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Upper Fuel system component leaking |7.2.1a| | 1 |
| Rear Brake back plate|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |