| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 26 |
| Registration plate issues | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Horn not working |1.7.3a| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Headlamp insecure |1.2.3b| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Nearside Upper Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Upper Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| 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 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake has no recorded effort at a wheel no rear brake working at all . (1.2.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Roller brake test indicates a binding brake (3.3.A1a) | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Upper Rear suspension bush has excessive free play shock mount |2.4.A2a|i|| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Vehicle identification number not legible (0.2 (b)) | 1 |
| Front Shock absorber has negligible damping effect staying down when on bump test |5.3.2 |b|| | 1 |
| Indicator switch inoperative indicators not staying on when hand removed from switch |4.4.2 |a| |ii|| | 1 |
| Offside Rear Brake component insecure spit pin missing rear brake arm |1.1.21 |c|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Nearside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Brake pedal attachment screws loose |3.1.2b| | 1 |
| Central Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Offside Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |