| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Service brake: efficiency below requirements |3.7.B.7| | 3 |
| Service brake: efficiency below requirements |3.7.C.1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 2 |
| Nearside Rear rear brake recording little or no effort |3.7.B.5a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Registration plate issues | 2 |
| Parking brake: efficiency below requirements |3.7.B.7| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 2 |
| Nearside Rear Shock absorber insecure |2.7.2b| | 2 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 2 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 2 |
| Offside Rear Stop lamp adversely affected by the operation of another lamp |1.2.1f| | 1 |
| Rear parking brake recording little or no effort | 1 |
| Offside Rear rear brake recording little or no effort |3.7.B.5a| | 1 |
| Front front brake juddering severely |3.7.A.2b| | 1 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 1 |
| Horn not working |1.6.2a| | 1 |
| Front Brake lever has inadequate reserve travel |9.3.1f| | 1 |
| Brake lever has inadequate reserve travel |9.3.1f| | 1 |
| Rear Stop lamp not working |1.2.1b| | 1 |
| Stop lamp not working |1.2.1b| | 1 |
| Offside Front Footrest insecure |9.6.1| | 1 |
| Stop lamp not working not working of rear brake control |1.2.1b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Steering operation impeded by a fairing Brake disc shroud. (2.1.4 (e)) | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear brake disc contaminated by oil |3.5.1h| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 1 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 1 |
| Brakes imbalanced across an axle | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Stop lamp adversely affected by the operation of another lamp |1.2.1f| | 1 |
| Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f| | 1 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Hazard warning lamps inoperative |1.4.B.1b| | 1 |
| Parking brake efficiency below requirements |3.7.C.1b| | 1 |
| Front Steering damper gland failed and leaking oil |2.2.C.1e| | 1 |
| Front Steering damper ineffective |9.2.3b| | 1 |
| Nearside front brake juddering severely |3.7.A.2b| | 1 |
| Offside front brake juddering severely |3.7.A.2b| | 1 |
| Offside Rear Exhaust system not adequately supported |7.1.1| | 1 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Brake pedal has insufficient reserve movement brake lever |3.3.A.5| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Centre Headlamp not working on dipped beam |1.7.5a| | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |