| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 33 |
| Headlamp aim out of alignment | 32 |
| Drive chain excessively loose |6.2.1d| | 20 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Registration plate issues | 14 |
| Horn not working |1.7.3a| | 11 |
| Drive chain worn to excess |6.2.1e| | 9 |
| Registration plate lamp issues | 8 |
| Offside Rear Footrest missing |6.2.1a| | 7 |
| Nearside Front Direction indicator not working |1.5.1c| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Rear reflector on motorcycle obscured |1.4.1| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| 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| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Rear position lamp insecure |1.1.1c| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Fuel system component insecure |7.2.1b| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Fuel tank insecure (6.1.3 (a) (i)) | 3 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Steering lock stop missing |2.1.3| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| An item not tested |Manual| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Nearside Front Direction indicator lens defective such that the emitted light is adversely affected |4.4.1 |b| |ii|| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Nearside Front Direction indicators not working (1.5.1c) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Brake pedal pivot excessively worn (1.1.1 (b)) | 2 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Split link clip |6.2.1h| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system Silencer |7.1.1.c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension ns foot rest bent causing to reduced suspension movement |2.4.A.3a| | 1 |
| Headlamp aim not tested dip and main beam are the wrong way round |1.6| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Offside Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Rear Direction indicator obscured |1.5.1a| | 1 |
| Nearside Rear Direction indicator obscured |1.5.1a| | 1 |
| Rear Brake pedal has inadequate reserve travel |excessive movement causing| |3.1.3b| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear suspension bush has excessive free play lower |2.4.A2a|i|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Exhaust is leaking and excessively noisey at front |7.1.1b| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Front Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Offside Front Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Offside Rear Direction indicator lens defective such that the emitted light is adversely affected |4.4.1 |b| |ii|| | 1 |
| Rear Position lamp lens seriously defective |4.2.1 |b|| | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Rear Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking fairing brocken |6.1.1c| | 1 |
| Offside Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking seat fairing brocken |6.1.1c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Nearside Direction indicator obscured nearside fairing damaged |1.5.1a| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Lower Suspension attachment bracket/mounting insecure |5.3.3 |a| |i|| | 1 |
| Nearside Lower Motorcycle structure joining/attachment plate or fastening insecure |6.1.1 |b| |i|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Nearside Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies from front brake leaver |1.3.1a| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Direction indicators flashing more than 120 times per minute all indicators |1.5.1c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies Hand controls |1.3.1a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Drive belt worn to excess |6.2.1e| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Nearside Front wheel spindle securing nut locking device missing split pin |2.3.3a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Central Rear Brake performance not tested |1.2.1 |g|| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Fuel system component insecure fuel tank |7.2.1b| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Fuel system component insecure TANK |7.2.1b| | 1 |
| Roller brake test indicates a sticking brake FRONT AND REAR |3.3.A1a| | 1 |
| Steering lock stop maladjusted |2.1.3| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Steering headbearing has excessive free play yoke not tight |2.2.2| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride front yorks |6.2.1h| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Throttle operating incorrectly mounting insecure |6.2.1f| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Stop lamp not working front brake light switch not working |4.3.1 |a| |ii|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies loose wire |1.3.1a| | 1 |
| Front suspension assembly component loose top yoke centre bolt loose |2.3.1| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Fairings so located that it is likely to impede the steering left hand switch assy fouls fairing on right lock |2.1.2e| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Headlamp incorrect colour |4.1.4 |a|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Position lamp missing |4.2.1 |a|| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering insecure wiring |2.1.2a| | 1 |
| Brake disc|s| insecure excessive float on disc suports |3.2.A1g| | 1 |
| Offside Rear 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 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Suspension rod pin or bush excessively worn up and down play (5.3.4 (a) (i)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Exhaust system insecure (6.1.2 (a)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Direction indicator not working L/H Front (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working Rear switch (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicators not working (1.5.1c) | 1 |
| Offside Front Direction indicators not working (1.5.1c) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.5.1) | 1 |
| Nearside Front Steering lock stop missing (2.1.3) | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Offside Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Offside Direction indicators not working (1.5.1c) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Nearside Front Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| 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)) | 1 |
| Fuel cap ineffective does not seal/latch (6.1.3 (b) (i)) | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected clamp bolt lower (5.2.1 (c) (ii)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Front Brake lagging in operation (1.2.1 (d)) | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Front Position lamp showing red light to the front Both position lights are red (4.2.3 (a) (ii)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Rear Footrest missing Pillion footrests missing (6.2.12 (a)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Wheel spoke excessively bent (5.2.2 (d)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Wheel bearing play so excessive it is likely to break up sprocket bearing (5.1.3 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Nearside Front Upper Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Steering operation impeded by a fairing (2.1.4 (e)) | 1 |