| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 20 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 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 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Horn sound not in accordance with requirements not loud enough (7.7 (c)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Registration plate issues | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Horn not working |1.7.3a| | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front suspension has a fracture of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Central Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |