| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Registration plate issues | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Horn not working |1.7.3a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Registration plate lamp issues | 2 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride No locking device on riders nearside footpeg. |6.2.1h| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Front Lower Brake pipe excessively damaged |3.2.B2a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Upper Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Parking brake lever missing |3.1.3a| | 1 |
| Offside Rear Parking brake efficiency below requirements |3.7.C.1b| | 1 |
| Nearside Rear Parking brake efficiency below requirements |3.7.C.1b| | 1 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 1 |
| Front Horn not working |1.6.2a| | 1 |
| Front Stop lamp not working |1.2.1b| | 1 |
| Vehicle structure has damage which adversely affects braking or steering |6.1.A.1| | 1 |
| Rear Parking brake not fitted on at least two wheels |3.1.1| | 1 |
| Rear Parking brake efficiency below requirements |3.7.C.1b| | 1 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Stop lamp adversely affected by the operation of another lamp |1.2.1f| | 1 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Front Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.C.1a| | 1 |
| Offside Rear Upper Front suspension has excessive movement at a wishbone pin or bush |2.5.A.1c| | 1 |
| Horn not working |1.6.2a| | 1 |
| Service brake: efficiency below requirements |3.7.C.1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 1 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 1 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 1 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Wheel fixing missing (single fixing) (5.2.1 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |