| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 77 |
| Drive chain excessively loose |6.2.1d| | 32 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 25 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 21 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 18 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Steering headbearing has excessive free play |2.2.2| | 12 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 12 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 9 |
| Registration plate issues | 9 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 8 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Horn not working |1.7.3a| | 8 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 8 |
| Throttle operating incorrectly |6.2.1f| | 8 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 7 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Riders seat insecure |6.2.1a| | 6 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 6 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 5 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Offside Rear Direction indicator insecure |1.5.3b| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| All direction indicators not working |4.4.1 |a| |ii|| | 2 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Front Headlamp insecure |1.2.3b| | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |