| Most common failures | No# failures |
|---|
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Nearside Rear Direction indicator not working |1.5.1c| | 5 |
| Headlamp aim out of alignment | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Registration plate issues | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Nearside Direction indicator not working |1.5.1c| | 3 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Direction indicator not working |1.5.1c| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Nearside Rear Rear position lamp insecure |1.1.1c| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Direction indicator not working both sides (4.4.1 (a) (ii)) | 1 |
| Position lamp switch does not operate in accordance with the requirements (4.2.2 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Centre Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Outer Rear Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Steering linkage has excessive free play |2.2.2| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| All direction indicators incorrect colour |4.4.3 |a|| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear wheel has a missing wheel bolt|s| |4.2.3a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Position lamp not working side light (4.2.1 (a)) | 1 |
| Front Position lamp not working side light |4.2.1 |a|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |