| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside An item not tested |Manual| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Rear Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp reflector seriously defective |4.1.1 |b| |ii|| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Wheel spoke excessively bent |4.2.1b| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Horn not working |1.7.3a| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Brake drum|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Motorcycle structure cracked |6.1.1a| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Brake linked system has a seized master cylinder pivot. |3.2.B5| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear All direction indicators adversely affected by the operation of another lamp |4.4.3 |b|| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Headlamp not working on dipped beam Replaced bulb |4.1.1 |a| |ii|| | 1 |
| Exhaust silencer insecure |8.1.1 |b| |i|| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Registration plate lamp issues | 1 |