| Most common failures | No# failures |
|---|
| Rear reflector missing (4.8.2 (a) (ii)) | 125 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 42 |
| Registration plate lamp issues | 38 |
| Registration plate issues | 29 |
| Rear Brake excessively binding (1.2.1 (f)) | 29 |
| Headlamp aim out of alignment | 24 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 24 |
| Front Brake excessively binding (1.2.1 (f)) | 24 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 21 |
| Offside Rear Footrest missing (6.2.12 (a)) | 13 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 13 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 12 |
| Horn not working (7.7 (a)) | 12 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 11 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 11 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 11 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 9 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 8 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 7 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 6 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 6 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 5 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 5 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 5 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 4 |
| 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)) | 4 |
| Riders seat insecure (6.2.5 (a) (ii)) | 4 |
| Central Rear Upper Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 4 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Exhaust system insecure (6.1.2 (a)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 3 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Front Brake disc contaminated (1.1.14 (b)) | 3 |
| Brake excessively binding (1.2.1 (f)) | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 3 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 3 |
| Rear Brake grabbing severely (1.2.1 (c)) | 2 |
| Front Brake lever is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 2 |
| Nearside Rear Direction indicator missing (4.4.1 (a) (ii)) | 2 |
| Offside Rear Direction indicator missing (4.4.1 (a) (ii)) | 2 |
| Front Horn not working (7.7 (a)) | 2 |
| Rear brake disc in such a condition that it is seriously weakened | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 2 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Offside Rear Direction indicator light intensity significantly reduced (4.4.3 (a)) | 2 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 2 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Front Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |