| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 57 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 16 |
| Drive chain excessively loose |6.2.1d| | 14 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 13 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 12 |
| Drive chain worn to excess |6.2.1e| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 7 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 7 |
| Registration plate issues | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Offside Rear Footrest insecure |6.2.1a| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front Direction indicators not working |1.5.1c| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Brake pedal cannot be released smoothly |3.1.3d| | 3 |
| Chain guard insecure |6.2.1c| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| 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| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Registration plate lamp issues | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 2 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Footrest insecure |6.2.12 |a|| | 1 |
| Nearside Rear Footrest insecure |6.2.12 |a|| | 1 |
| Rear Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Rear All position lamps not working |4.2.1 |a|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Rear wheel spindle securing nut locking device insecure missing split pin |2.4.A.2b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Rear Brake reaction bracket excessively corroded (1.1.15 (b)) | 1 |
| Offside Rear Brake component insecure split pin missing rear torque arm locking nut (1.1.21 (c)) | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Exhaust is leaking and excessively noisey Manifold |7.1.1b| | 1 |
| Nearside Headlamp switch insecure |1.2.4| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Central Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 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 |
| Nearside Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride split pin rear brake arm missing |6.2.1h| | 1 |
| Offside Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Fuel cap sealing washer torn |7.2.2c| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Shock absorber has a serious fluid leak fork seals (5.3.2 (b)) | 1 |
| Brake excessively binding Front |1.2.1 |f|| | 1 |
| Brake has no recorded effort at a wheel Rear |1.2.1 |a| |ii|| | 1 |
| Stop lamp not working Front |4.3.1 |a| |ii|| | 1 |
| Position lamp not working Rear |4.2.1 |a|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Nearside Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Front Wheel fixing loose (multiple fixings) (5.2.1 (a) (i)) | 1 |
| Rear Wheel spindle loose split pin missing (renewed) (5.2.1 (c) (i)) | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up sprocket carrier bearing (5.1.3 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Rear Road spring with an unsafe modification Suspension stays fully compressed under bikes weight |5.3.1 |d|| | 1 |
| Drive chain sprocket worn to excess Sprocket carrier bearing |6.1.7 |c| |i|| | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure Brake drum bar locking device |6.1.1 |b| |i|| | 1 |
| Front Brake lever pivot excessively tight |1.1.1 |a|| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicators flashing more than 120 times per minute fitted new flasher unit |1.5.1c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Central Front Steering operation restricted in free movement from lock to lock wiring fouling (2.1.4 (c)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Rear Footrest insecure LOCKING CIRCLIP MISSING |6.2.1a| | 1 |
| Rear Brake component is severely distorted rear brake drum |3.1.5| | 1 |
| Front Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Footrest missing offside & nearside rear |6.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle not returning to stop |6.2.7 |a| |ii|| | 1 |
| Front Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Headlamp insecure securing bolt loose |4.1.1 |c|| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Drive chain sprocket carrier worn to excess cush drive |6.2.1e| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Lower Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |