| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 25 |
| Headlamp aim out of alignment | 15 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 5 |
| Horn not working (7.7 (a)) | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Fuel cap leaking (6.1.3 (b) (i)) | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 3 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Front Headlamp aim unable to be tested (4.1.2 (b)) | 2 |
| Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 2 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Front Horn not working (7.7 (a)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Registration plate issues | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Offside Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Stop lamp not working switch (4.3.1 (a) (ii)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Fuel tank insecure not fixed at the front (6.1.3 (a) (i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak fork (5.3.2 (b)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Rear Suspension component attachment bracket/mounting damaged and seriously weakened (5.3.3 (b) (i)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Offside Rear Lower Drive chain so loose it is likely to fail Chain excessively loose, adjusted and lubricated (6.1.7 (c) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition can see the silencer has been drilled (8.1.1 (a)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| All direction indicators incorrect colour (4.4.3 (a)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Fuel cap leaking Seal split and perished (6.1.3 (b) (i)) | 1 |
| Offside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Upper Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy both stiff and notchy, headraces excessively tight (2.2.2 (f) (i)) | 1 |
| Offside Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Footrest insecure split pin missing (6.2.12 (a)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Front Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls not functioning from front brake lever (4.3.2 (a) (iii)) | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Nearside Upper Fork yoke insecure bolt missing (2.2.2 (d) (i)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Stop lamp lens defective such that the emitted light is adversely affected (4.3.1 (b) (ii)) | 1 |
| Shock absorber has a serious fluid leak both fork oil seals (5.3.2 (b)) | 1 |
| Brake disc contaminated oil on disc (1.1.14 (b)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Rear Stop lamp not working rear stop light switch not working (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Nearside Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |