| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 7 |
| Registration plate issues | 6 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 5 |
| Rear Wheel spoke excessively loose |4.2.1b| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Horn not working |1.7.3a| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear suspension component loose |2.4.A.1a| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Rear Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Nearside Front Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Offside Front Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Brake pedal has insufficient reserve travel adjusted (1.1.2 (a)) | 1 |
| Front Wheel fixing missing (single fixing) split pin (5.2.1 (a) (ii)) | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component bush loose |2.3.4| | 1 |
| Fairings so located that it is likely to impede the steering cables traping on lock |2.1.2e| | 1 |
| Handlebar mounting clamp bolt loose handle bar movement |2.1.1a| | 1 |
| Handlebar retaining device loose |2.2.1 |b| |i|| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Centre Front Lower Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Centre Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Centre Rear Lower Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component lower suspension bushes |2.3.4| | 1 |
| Brake reaction bracket securing bolt|s| loose rear brake |3.2.A1j| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Central Footrest insecure |6.2.12 |a|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Rear Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Centre Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Front All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired Mounting broken |1.5.3a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Lower Rear shock absorber insecurely mounted Nut |2.4.A.3b| | 1 |
| Offside Upper Rear shock absorber insecurely mounted nut |2.4.A.3b| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Inner Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |