| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 71 |
| Headlamp insecure |1.2.3b| | 25 |
| Drive chain excessively loose |6.2.1d| | 24 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 23 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 17 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Riders seat insecure |6.2.1a| | 15 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 13 |
| Registration plate issues | 10 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Stop lamp remains on when the brake is released |1.3.1e| | 7 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 7 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 7 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 6 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 6 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Exhaust has part of the system missing |7.1.1a| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 3 |
| Registration plate lamp issues | 3 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Chain guard insecure |6.2.1c| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Rear Motorcycle structure excessively damaged |6.1.1a| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 2 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 2 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Drive chain fouling another component |6.2.1d| | 2 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| All direction indicators not working |4.4.1 |a| |ii|| | 2 |
| Rear Brake drum|s| insecure |3.2.A1g| | 2 |
| Stop lamp does not emit a steady light |1.3.1b| | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Front Fork yoke deformed |2.1.1b| | 2 |
| Offside Direction indicator not working |1.5.1c| | 2 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Nearside Drive chain excessively loose |6.2.1d| | 2 |
| Rear Riders seat insecure |6.2.1a| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Footrest insecure |6.2.1a| | 2 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Fuel cap missing |7.2.2a| | 2 |
| Front position lamp insecure |1.1.1c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Front suspension assembly component excessively bent |2.3.1| | 2 |
| Front Front position lamp insecure |1.1.1c| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |