| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 16 |
| Headlamp aim out of alignment | 9 |
| Registration plate issues | 9 |
| Riders seat insecure |6.2.1a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Indicator tell tale not functioning |1.5.2| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Horn not working |1.7.3a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Seat insecure |6.2.1a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 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 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Nearside Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Inner Rear Lower Drive chain fouling another component |6.2.1d| | 1 |
| Inner Front Lower Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Front Headlamp insecure |1.2.3b| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Nearside Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |