| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 83 |
| Drive chain excessively loose |6.2.1d| | 32 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 26 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 25 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 21 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 16 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 16 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 13 |
| Registration plate issues | 13 |
| Steering headbearing has excessive free play |2.2.2| | 13 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 12 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Drive chain worn to excess |6.2.1e| | 9 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 9 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 9 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 9 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 7 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 7 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Handlebar deformed |2.1.1b| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Horn not working |1.7.3a| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Position lamp not working (4.2.1 (a)) | 4 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Brake disc|s| cracked |3.2.A1g| | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Offside Footrest insecure |6.2.1a| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 2 |