| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 7 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Throttle operating incorrectly to slow to return (6.2.7 (a) (i)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Throttle operating incorrectly sticking |6.2.1f| | 1 |
| Drive chain worn to excess dangerous |6.2.1e| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Front not working/Rear intermittent (4.3.2 (a) (iii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Suspension component modified so the suspension is inoperative (5.3.3 (c) (ii)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Registration plate issues | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |