| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 68 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 36 |
| Registration plate issues | 30 |
| Rear Position lamp not working (4.2.1 (a)) | 23 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 21 |
| Registration plate lamp issues | 21 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 12 |
| Horn not working (7.7 (a)) | 11 |
| Rear reflector missing (4.8.2 (a) (ii)) | 10 |
| Stop lamp remains on when the brakes are released | 9 |
| Front Brake excessively binding (1.2.1 (f)) | 9 |
| Stop lamp not working (4.3.1 (a) (ii)) | 8 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 8 |
| Horn not working (7.7 (a) (ii)) | 7 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 7 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 7 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 7 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 6 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 6 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 5 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 5 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 4 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 4 |
| Headlamp aim not tested (4.1.2 (b)) | 4 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 4 |
| All direction indicators not working (4.4.1 (a) (ii)) | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Nearside Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 2 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 2 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Rear Brake lagging in operation (1.2.1 (d)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Horn not working (7.7 (a)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Steering headbearing excessively stiff or notchy notchy (2.2.2 (f) (i)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 2 |
| Offside Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Central Front Horn not working (7.7 (a)) | 2 |