| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Horn not working |1.7.3a| | 8 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Service brake: efficiency below requirements |3.7.B.7| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Brake cable has wires broken and is significantly weakened |3.5.1b| | 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 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Wheel more than one fixing missing (5.2.1 (a) (ii)) | 2 |
| Offside Front Wheel more than one fixing missing (5.2.1 (a) (ii)) | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Outer Front Brake hose leaking fluid |3.2.B4| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Offside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Nearside Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Offside Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear position lamp|s| flickers when tapped lightly by hand |1.1.4c| | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Offside Stop lamp not working |1.2.1b| | 1 |
| Nearside Rear Braking system leaking |3.6.A.1| | 1 |
| Front Front position lamp|s| not working |1.1.A.3b| | 1 |
| Nearside Rear Stop lamp not working |1.2.1b| | 1 |
| Offside Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front suspension assembly component loose |2.3.1| | 1 |
| Offside Front Front suspension assembly component loose |2.3.1| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Indicator tell tale inoperative |1.4.A.2a| | 1 |
| Hazard warning tell tale not working correctly |1.4.B.1e| | 1 |
| Registration plate lamp issues | 1 |
| Rear reflector missing |1.5.1a| | 1 |
| Horn not working |1.6.2a| | 1 |
| Front Brake hose leaking |3.6.A.1| | 1 |
| Front Shock absorber has a serious fluid leak |2.7.3| | 1 |
| Nearside Rear Brake linkage has restricted free movement |3.5.1k| | 1 |
| Hazard warning switch missing |1.4.B.1d| | 1 |
| Rear Rear reflector missing |1.5.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Brakes imbalanced across an axle | 1 |
| Rear Brake pedal fractured |3.3.A.1a| | 1 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Registration plate issues | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Stop lamp not working lever switch in / op (4.3.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |