| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 12 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Rear Drive chain excessively loose |6.2.1d| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Registration plate issues | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Clutch lever shortened so it cannot be readily operated (6.2.7 (b)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front suspension assembly component excessively bent |2.3.1| | 1 |
| Offside Front suspension assembly component excessively bent |2.3.1| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Front Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Registration plate lamp issues | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Position lamp missing (4.2.1 (a)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Upper Suspension attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Front Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Lower Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Rear Lower Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Headlamp switch faulty Main beam does not always work |1.2.4| | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Position lamp not working (4.2.1 (a)) | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Suspension arm modified so the suspension is likely to fail other components rear suspension arm restricted by exhaust |5.3.3 |c| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Brake pipe excessively corroded | 1 |
| Offside Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies lever |1.3.1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected steering notchey |2.2.2 |f| |ii|| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |