| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 123 |
| Headlamp aim out of alignment | 91 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 48 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 42 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 32 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 31 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 27 |
| Steering headbearing has excessive free play |2.2.2| | 25 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 25 |
| Registration plate issues | 24 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 22 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 21 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 17 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 17 |
| Headlamp aim not tested |1.6| | 15 |
| Fuel cap sealing washer missing |7.2.2c| | 15 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 14 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 12 |
| Horn not working |1.7.3a| | 11 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 11 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 11 |
| Riders seat insecure |6.2.1a| | 10 |
| Exhaust excessively deteriorated |7.1.1a| | 10 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 10 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 7 |
| Nearside Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 7 |
| Offside Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 7 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 6 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 5 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 5 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Registration plate lamp issues | 5 |
| Front suspension has inadequate damping effect. |2.3.6c| | 5 |
| Headlamp insecure |1.2.3b| | 5 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 5 |
| Front Horn not working |1.7.3a| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Headlamp aim not tested |4.1.2 |b|| | 3 |
| Rear Brake lever attachment screws loose |3.1.2b| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Indicator switch defective |1.5.4| | 3 |
| Rear Brake lever insecure |3.1.2a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Offside Steering lock stop ineffective |2.1.3| | 3 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Rear Position lamp not working |4.2.1 |a|| | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |