| Most common failures | No# failures |
|---|
| Rear reflector missing (4.8.2 (a) (ii)) | 147 |
| Headlamp aim out of alignment | 100 |
| Registration plate issues | 78 |
| Registration plate lamp issues | 62 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 36 |
| Horn not working (7.7 (a)) | 35 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 24 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 23 |
| 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)) | 12 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 10 |
| Stop lamp remains on when the brakes are released | 8 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 8 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 7 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 7 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 6 |
| Front Brake excessively binding (1.2.1 (f)) | 6 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 5 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 5 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 5 |
| Offside Rear Footrest missing (6.2.12 (a)) | 5 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 5 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 4 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Rear Footrest missing (6.2.12 (a)) | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Horn not working (7.7 (a)) | 4 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 4 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Central Rear Upper Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 3 |
| Nearside Rear Direction indicator light intensity significantly reduced (4.4.3 (a)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 2 |
| Offside Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Nearside Rear Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 2 |
| Offside Rear Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 2 |
| Central Front Upper Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Nearside Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Nearside Front Horn not working (7.7 (a)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |