| Most common failures | No# failures |
|---|
| Rear reflector missing (4.8.2 (a) (ii)) | 32 |
| Registration plate issues | 29 |
| Horn not working (7.7 (a) (ii)) | 18 |
| Headlamp aim out of alignment | 8 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 6 |
| Headlamp aim not tested (4.1.2 (b)) | 6 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Horn not working |7.7 |a| |ii|| | 5 |
| Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Horn not working (7.7 (a)) | 5 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Registration plate lamp issues | 4 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Rear Wheel spoke missing (5.2.2 (d)) | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Wheel more than one fixing loose (5.2.1 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort excessive run-out (1.2.1 (e)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Brake pedal pivot has excessive free play nut/bolt insecure (1.1.1 (b)) | 1 |
| Rear Wheel spoke missing rear wheel with broken spoke (5.2.2 (d)) | 1 |
| Brake lever has insufficient reserve travel front brake lever (1.1.2 (a)) | 1 |
| Front Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front All position lamps not working (4.2.1 (a)) | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Drive chain horseshoe locking device likely to become detached Clip worn away (6.1.7 (j) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Steering operation fouling on the fuel tank or bodywork on full lock cables and clutch pipe fouling on steering lock |2.1.4 |b|| | 1 |
| All direction indicators missing all (4.4.1 (a) (ii)) | 1 |
| Wheel bearing play so excessive it is likely to break up rear wheel bearings (5.1.3 (a) (ii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Wheel excessively distorted wheel rim (5.2.2 (c) (i)) | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Wheel bearing has excessive play Rear wheel (5.1.3 (a) (i)) | 1 |
| Rear Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |