| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 3 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Suspension attachment bracket/mounting insecure both locking nuts loose |5.3.3 |a| |i|| | 1 |
| Rear Valve stem seriously misaligned valve stem locking nut loose |5.2.3 |j|| | 1 |
| Headlamp not working on dipped beam switch sticking |4.1.1 |a| |ii|| | 1 |
| Handlebar excessively corroded |2.1.1b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Front Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Offside Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Front Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Rear Valve stem seriously misaligned (5.2.3 (j)) | 1 |