| Most common failures | No# failures |
|---|
| Front Stop lamp not working (4.3.1 (a) (ii)) | 9 |
| Headlamp aim out of alignment | 8 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 8 |
| Stop lamp remains on when the brakes are released | 7 |
| Registration plate lamp issues | 7 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Registration plate issues | 6 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 3 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Rear Shock absorber has an excessively worn bush Top mount excessive play (5.3.2 (c)) | 1 |
| Suspension component mounting modified so the suspension is inoperative Swing arm fouling on exhaust restricting movement (5.3.3 (c) (ii)) | 1 |
| Roller brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Brake performance unable to be tested (1.2.1 (g)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Nearside Front Upper Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls not working on front brake (4.3.2 (a) (iii)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Rear Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Offside Front Brake lever so insecure that the brake cannot be readily applied brake lever damaged so moves out of reach (1.1.2 (e) (ii)) | 1 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Central Front Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Rear Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Offside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Nearside Rear Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls Rear brake not operating stop lamp (4.3.2 (a) (iii)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Central Rear Upper Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Nearside Rear Upper Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Wheel alignment incorrect which adversely affects the steering Steering alignment incorrect (2.4 (a)) | 1 |
| Front Stop lamp not working switch (4.3.1 (a) (ii)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Offside Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Exhaust system insecure end can fastening springs missing (6.1.2 (a)) | 1 |
| Nearside Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Offside Front Upper Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Front Shock absorber insecurely attached both fork top nuts (5.3.2 (a) (i)) | 1 |
| Rear Suspension arm pin or bush excessively worn Side to side movement will alter track of bike alignment (5.3.4 (a) (i)) | 1 |
| Nearside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Brake pedal is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |