| Most common failures | No# failures |
|---|
| Registration plate issues | 75 |
| Rear reflector on motorcycle missing |1.4.1| | 63 |
| Headlamp aim out of alignment | 40 |
| Horn not working |1.7.3a| | 25 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 21 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 21 |
| Front wheel bearings have excessive free play |2.3.5b| | 20 |
| Headlamp aim beam image kick up to the offside |1.6| | 14 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear Wheel spoke excessively loose |4.2.1b| | 9 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 9 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Front wheel bearings are excessively rough |2.3.5b| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Horn missing |1.7.1| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 6 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Horn not working (7.7 (a)) | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| 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| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| An item not tested |Manual| | 2 |
| Rear position lamp incorrect colour |1.1.2b| | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front position lamp missing |1.1.1a| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Brake lever insecure |3.1.2a| | 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 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear reflector on sidecar missing |1.4.1| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Wheel spoke excessively loose x 20 (5.2.2 (d)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Exhaust has a major leak of exhaust gases manifold (6.1.2 (a)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Shock absorber insecurely attached retaining bolt missing (5.3.2 (a) (i)) | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Stop lamp missing dissconected |1.3.3a| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Exhaust mounting missing bolt missing from middle of exhaust |7.1.1c| | 1 |
| Nearside Front Lower Steering lock stop maladjusted re adjusted |2.1.3| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain clip incorrectly fitted |6.2.1h| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Centre Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Headlamp aim headlamp damaged and function impaired head light incorrectly wired |1.2.3a| | 1 |
| Motorcycle structure cracked |6.1.1a| | 1 |
| Vehicle identification number not permanently displayed |6.3.5a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Horn emits 2 or more alternating tones |1.7.3b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Inner Front Lower Wheel spoke excessively loose |4.2.1b| | 1 |
| Nearside Inner Rear Lower Wheel spoke excessively loose |4.2.1b| | 1 |
| Nearside Outer Rear Lower Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear position lamp incorrect colour Showing white light to the rear. |1.1.2b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| All direction indicators missing switch present but indicators removed |4.4.1 |a| |ii|| | 1 |
| Stop lamp light intensity significantly reduced Brake lights very dull unable to be seen by other road users |4.3.3 |a| |ii|| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Wheel hub excessively worn Rear wheel bearing needing replaced |5.2.1 |b| |i|| | 1 |
| Sidecar rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Wheel spindle loose BLOCK CRACKED (5.2.1 (c) (i)) | 1 |
| Centre Rear Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Shock absorber has a serious fluid leak Front forks |5.3.2 |b|| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Motorcycle structure cracked Sub frame mount. |6.1.1a| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Outer Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear wheel rotation likely to be impeded hitting exhaust |6.2.1b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Brake performance not tested |3.3| | 1 |
| Throttle operating incorrectly Doesn`t return |6.2.1f| | 1 |