| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 81 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 31 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 22 |
| Registration plate issues | 20 |
| Throttle operating incorrectly |6.2.1f| | 19 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 19 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 17 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 16 |
| Front wheel bearings have excessive free play |2.3.5b| | 14 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 12 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 11 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 11 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 10 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 10 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 10 |
| Front wheel bearings are excessively rough |2.3.5b| | 8 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Exhaust excessively deteriorated |7.1.1a| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 6 |
| Handlebar deformed |2.1.1b| | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Offside Rear Footrest missing |6.2.1a| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Direction indicators not working |1.5.1c| | 4 |
| Indicator tell tale not functioning |1.5.2| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 4 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Horn not working |1.7.3a| | 4 |
| Offside Footrest insecure |6.2.1a| | 4 |
| Nearside Front Footrest insecure |6.2.1a| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 3 |
| Offside Rear Footrest insecure |6.2.1a| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Rear Footrest missing (6.2.12 (a)) | 3 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 3 |
| Front Brake disc contaminated (1.1.14 (b)) | 3 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| An item not tested |Manual| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Nearside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 2 |
| Sidecar wheel bearings are excessively rough |5.2.3d| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |