| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 50 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 39 |
| Drive chain excessively loose |6.2.1d| | 37 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 24 |
| Rear reflector on motorcycle missing |1.4.1| | 22 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 20 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Drive chain worn to excess |6.2.1e| | 12 |
| Horn not working |1.7.3a| | 10 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 9 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 9 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear reflector on motorcycle obscured |1.4.1| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Rear Footrest missing |6.2.1a| | 4 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 2 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear wheel spindle loose |2.4.A.2b| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Registration plate lamp issues | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Front Brake disc|s| insecure |3.2.A1g| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Front position lamp missing |1.1.1a| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Throttle operating incorrectly loose on handle bar |6.2.1f| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Offside Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| All direction indicators not working dont not flash (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp not working foot switch (4.3.1 (a) (ii)) | 1 |
| Wheel fixing missing (multiple fixings) split pin missing rear wheel (5.2.1 (a) (i)) | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Exhaust excessively deteriorated Rear section has a 2" hole in it |7.1.1a| | 1 |
| 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 Front Footrest insecure Footpeg bent and rubber missing |6.2.1a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort Rear brake not working |3.3.A1c| | 1 |
| Nearside Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Fuel pipe leaking fuel line from tank leaking (6.1.3 (b) (i)) | 1 |
| Headlamp not working on main beam no main beam switch (4.1.1 (a) (ii)) | 1 |
| Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced swingarm (6.1.1 (c) (i)) | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake pivot has restricted free movement |1.1.15 |e|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Brake lever mounting insecure |3.1.2a| | 1 |
| Centre Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Suspension arm damaged and seriously weakened swinging arm (5.3.3 (b) (i)) | 1 |
| Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear suspension component excessively corroded. swinging arm |2.4.A.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Drive chain sprocket excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Front Horn not working broken wire |7.7 |a| |ii|| | 1 |
| Offside Front Shock absorber insecurely attached upper bolt fixing to yoke loose |5.3.2 |a| |i|| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Nearside Front Wheel fixing missing (multiple fixings) spacer missing (5.2.1 (a) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Brake performance not tested due to wheel insecure front (1.2.1 (g)) | 1 |
| Rear reflector missing rear reflector was covered by the rear L plate (4.8.2 (a) (ii)) | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Brake component insecure Brake anchor split pin missing. (1.1.21 (c)) | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Suspension arm corroded and seriously weakened swing arm (5.3.3 (b) (i)) | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Position lamp not working Rear |4.2.1 |a|| | 1 |
| Stop lamp not working Front |4.3.1 |a| |ii|| | 1 |
| Stop lamp not working Rear |4.3.1 |a| |ii|| | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Offside Rear Lower Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Upper Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Offside Rear Lower Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| 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 |
| Fuel system component leaking |7.2.1a| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Offside Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Offside Footrest insecure |6.2.12 |a|| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Rear Brake locking device missing anchor arm |3.2.A1e| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. Swinging Arm |2.4.A.2d| | 1 |
| Offside Front Throttle operating incorrectly reving up on full lock (6.2.7 (a) (i)) | 1 |
| Central Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Brake rod insecure brake arm needs adjusting (1.1.15 (c)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Brake back plate|s| securing bolt|s| missing Torque arm split pin missing |3.2.A1j| | 1 |
| Brake fluid contaminated |1.8 |a|| | 1 |
| Front All position lamps not working |4.2.1 |a|| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Offside Brake lever so insecure that the brake cannot be readily applied (1.1.2 (e) (ii)) | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Suspension arm pin or bush excessively worn rear trailing arm |5.3.4 |a| |i|| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Rear Lower Footrest missing |6.2.1a| | 1 |
| Offside Rear Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Front position lamp flickers when tapped lightly by hand side light
|1.1.3c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies foot |1.3.1a| | 1 |
| Headlamp missing main beam |1.2.3a| | 1 |
| Offside Front Upper Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Suspension arm corroded and seriously weakened swinging arm (5.3.3 (b) (i)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Offside Front Brake lever insecure |3.1.2a| | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear Brake component insecure (1.1.21 (c)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Roller brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Nearside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Position lamp not working |4.2.1 |a|| | 1 |
| Drive chain horseshoe locking device likely to become detached Chain adjuster loose |6.1.7 |j| |ii|| | 1 |
| Registration plate issues | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Footrest missing both rear (6.2.12 (a)) | 1 |