| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 12 |
| Headlamp aim beam image kick up to the offside |1.6| | 8 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Headlamp aim beam image kick up to the offside |1.8| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front brake disc locking device insecure |3.5.1l| | 1 |
| Rear Hydraulic brake cylinder leaking hydraulic fluid |3.6.A.1| | 1 |
| Centre Rear Torsion bar attachment bracket loose |2.4.E.4a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Front Stop lamp not working switch not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel spoke excessively loose All rear spokes loose (5.2.2 (d)) | 1 |
| Horn not working |1.7.3a| | 1 |
| Registration plate issues | 1 |
| Registration plate lamp issues | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front brake disc locking device insecure |3.5.1l| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure torque arm bolt loose at hub (6.1.1 (b) (i)) | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Service brake efficiency less than 50% of the required value (1.2.2 (a) (ii)) | 1 |
| Rear Stop lamp not working |1.2.1b| | 1 |
| Horn not working |1.6.2a| | 1 |
| Brake hose has insufficient room to move | 1 |
| Service brake: efficiency below requirements |3.7.B.7| | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Headlamp not working on main beam |1.7.5a| | 1 |
| Upper Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Lower Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Sidecar suspension has an insecure unit. |5.2.3a| | 1 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 1 |
| Brakes imbalanced across an axle | 1 |