| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 35 |
| Headlamp aim out of alignment | 27 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Nearside Rear Footrest missing |6.2.1a| | 9 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Offside Rear Footrest missing |6.2.1a| | 8 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 7 |
| Registration plate issues | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 4 |
| Front 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 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 3 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 3 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Offside Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Horn not working |1.7.3a| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Footrest missing |6.2.1a| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Front Brake caliper|s| insecure |3.2.A1j| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| An item not tested |Manual| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Front Brake pipe inadequately supported |3.2.B2b| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Brake hose damaged | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 2 |
| Nearside Headlamp switch insecure |1.2.4| | 2 |
| Brake pedal is inoperative |3.1.3c| | 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 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front suspension assembly component missing |2.3.1| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Forks in such a condition that steering control is adversely affected Seals leaking (2.2.2 (d) (ii)) | 2 |
| Nearside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Nearside Headlamp insecure |1.2.3b| | 1 |
| Offside Headlamp insecure |1.2.3b| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Centre Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Suspension component has excessive wear or free play |5.3.3 |d|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Front wheel spindle loose |2.3.3a| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Rear Brake hose fouling |3.2.B3b| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 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 |
| Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Rear position lamp insecure |1.1.1c| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Front Headlamp switch insecure |1.2.4| | 1 |
| Offside Front Headlamp switch insecure |1.2.4| | 1 |
| Nearside Front Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Front Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Front Chain guard insecure |6.2.1c| | 1 |
| Centre Rear Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Centre Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Front Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Brake performance not tested |1.2.1 |g|| | 1 |
| Rear Brake caliper leaking and braking performance affected |1.1.16 |b| |ii|| | 1 |
| Front Brake caliper has no reserve travel and braking performance affected |1.1.16 |e| |ii|| | 1 |
| Rear Brake caliper leaking |1.1.16 |b| |i|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Steering lock stop maladjusted |2.1.3| | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock Incorrectly routed. |2.1.4| | 1 |
| Nearside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Lower Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Centre Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Centre Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front Headlamp aim not tested Dip beam not working |4.1.2 |b|| | 1 |
| Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Steering operation restricted in free movement from lock to lock Left lock applies rear brake light |2.1.4 |c|| | 1 |
| Offside Front Footrest insecure Bolt has no locking device |6.2.12 |a|| | 1 |
| Offside Rear Footrest insecure Has no locking device |6.2.12 |a|| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Headlamp aim not tested |1.6| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Upper Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride sprocket securing bolt loose |6.2.1h| | 1 |
| Rear Brake hose leaking fluid at caliper |3.2.B4| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Throttle operating incorrectly |6.2.1f| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Front mudguard insecure |2.3.7| | 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 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear suspension bearing has excessive free play SWING ARM |2.4.A2a|i|| | 1 |
| Rear All direction indicators obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Brake lagging in operation Very spongy operation (1.2.1 (d)) | 1 |
| Nearside Front Brake excessively binding 10kg of drag on front caliper (1.2.1 (f)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Front Brake disc contaminated covered in oil on rear of disc (1.1.14 (b)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Front Clutch lever positioned so it cannot be readily operated wrong lever, unable to pull in fully catching on switch housing (6.2.7 (b)) | 1 |
| Front Handlebar restricted in free movement from lock to lock clutch cable damaged and fouling on r/h lock (2.1.4 (c)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Wheel fixing missing (multiple fixings) pinch bolt (5.2.1 (a) (i)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Offside Rear Footrest missing Pillion foot peg (6.2.12 (a)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Central Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Offside Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Front Stop lamp switch with a delay in operation Faulty (4.3.2 (a) (ii)) | 1 |