| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 14 |
| Registration plate issues | 9 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Registration plate lamp issues | 2 |
| Indicator switch defective |1.5.4| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Brake performance not tested |3.3| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Nearside Rear spring worn and seriously weakened shock preload adjuster cracked |2.4A1b|ii|| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Rear Brake lever has restricted free movement |1.1.15 |e|| | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Brake disc in such a condition that it is seriously weakened front and rear (1.1.14 (a) (ii)) | 1 |
| Suspension component pin or bush excessively worn engine (5.3.4 (a) (i)) | 1 |
| Rear Engine mounting/bracket bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Brake disc insecure (1.1.14 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Handlebar excessively deformed steering out of alignment (2.2.1 (c) (i)) | 1 |