| Most common failures | No# failures |
|---|
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 16 |
| Front Position lamp not working (4.2.1 (a)) | 10 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 9 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 6 |
| Rear Position lamp not working (4.2.1 (a)) | 6 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 5 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Headlamp aim out of alignment | 4 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Offside Rear 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 |
| Horn not working (7.7 (a)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Front Brake hose leaking (1.1.12 (c)) | 1 |
| Offside Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Headlamp lens seriously defective (4.1.1 (b) (ii)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Stop lamp not working from rear brake (4.3.1 (a) (ii)) | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Roller brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Headlamp lens seriously defective lens incorrectly aligned (4.1.1 (b) (ii)) | 1 |
| Rear Shock absorber likely to become detached Top shock mounting bolts loose (5.3.2 (a) (ii)) | 1 |
| Dipswitch does not operate immediately when selected on main beam Faulty left hand switch (4.1.3 (b)) | 1 |
| Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Front Stop lamp not working front brake light switch (4.3.1 (a) (ii)) | 1 |
| Brake performance unable to be tested no rear pad lining (1.2.1 (g)) | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Brake component modification unsafe rear brake cylinder dangerous modification (1.1.21 (d) (i)) | 1 |
| Registration plate issues | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Central Suspension arm pin or bush excessively worn swing arm bush (5.3.4 (a) (i)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Central Rear Upper Position lamp not working rear light not working PRS bulb replaced (4.2.1 (a)) | 1 |
| Rear Brake fluid contaminated (1.8 (a)) | 1 |
| Front Stop lamp not working switch (4.3.1 (a) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls Rear brake control (4.3.2 (a) (iii)) | 1 |
| 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)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Brake cylinder inadequately mounted bolt broken in mastercylinder (1.1.16 (c) (i)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Central Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Central Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Central Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |