| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 47 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 17 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 17 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 16 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 15 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 15 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 13 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 12 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 7 |
| Exhaust excessively deteriorated |7.1.1a| | 6 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Registration plate issues | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Rear Brake excessively binding (1.2.1 (f)) | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear Brake disc|s| cracked |3.2.A1g| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 3 |
| Handlebar deformed |2.1.1b| | 2 |
| Horn not working |1.7.3a| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 2 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 2 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Brake performance not tested |1.2.1 |g|| | 2 |
| Roller brake test No brake control achieves an efficiency of 30% |1.2.2 |a| |i|| | 2 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Brake pipe inadequately supported |3.2.B2b| | 2 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |