| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 14 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Stop lamp remains on when the brakes are released | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Central Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Front Upper Direction indicator not working front o/s indicator not working - bulb replaced (4.4.1 (a) (ii)) | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Stop lamp not working From front lever (4.3.1 (a) (ii)) | 1 |
| Rear Footrest missing Both |6.2.1a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Exhaust markings indicating not for road use or similar wording |6.1.2 |c|| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Central Front Upper Headlamp aim headlamp damaged and function impaired Headlamp bulb fixing broken causing no beam pattern. Glue fix bulb to secure and correct beam pattern |1.2.3a| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 1 |
| Central Front Position lamp light intensity significantly reduced |4.2.3 |a| |ii|| | 1 |
| Rear 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 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Nearside Parking brake inoperative on one side (1.4.1 (a)) | 1 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |