| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Registration plate lamp issues | 20 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 15 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 13 |
| Registration plate issues | 7 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 7 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Front Brake excessively binding (1.2.1 (f)) | 6 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 4 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 4 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 4 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| 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 |
| Headlamp at least one does not illuminate on main beam (1.2.2a(ii)) | 1 |
| Headlamp light intensity severely reduced dipped beam (4.1.4 (a)) | 1 |
| Rear 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 Handlebar guard hitting windscreen before lock stop on full left lock (2.1.4 (b)) | 1 |
| Headlamp aim headlamp deteriorated and function impaired (1.2.3a) | 1 |
| Front Roller brake test indicates a binding brake (3.3.A1a) | 1 |
| Central Front Upper Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Steering damper ineffective Leaking (2.1.4 (d) (i)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure rear subframe bolt loose and likely to fall out. lock nut also missing (6.1.1 (b) (i)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Nearside Rear Footrest insecure c clip missing (6.2.12 (a)) | 1 |
| Offside Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Headlamp reflector seriously defective (4.1.1 (b) (ii)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock Hand guards fouling on lock to lock (2.1.4 (b)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Offside Front Brake disc contaminated (shock absorber fluid) (1.1.14 (b)) | 1 |
| Sidecar structure joining/attachment plate or fastening insecure front attachment arm bolt loose (6.1.1 (b) (i)) | 1 |
| Rear Brake fluid contaminated (1.8 (a)) | 1 |
| Offside Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Brake caliper leaking and braking performance affected (1.1.16 (b) (ii)) | 1 |
| Rear Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake cylinder leaking (1.1.16 (b) (i)) | 1 |
| Nearside Footrest insecure (6.2.12 (a)) | 1 |
| Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Wheel spindle locking device ineffective wheel loose (5.2.1 (d)) | 1 |
| Nearside Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Offside Front Upper Brake component insecure M/cylinder loose. (1.1.21 (c)) | 1 |
| Offside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Handlebar restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Headlamp not working on main beam blown bulb (4.1.1 (a) (ii)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Wheel fixing loose (single fixing) rear wheel spindle nut loose (5.2.1 (a) (ii)) | 1 |
| Central Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Front Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Nearside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Clutch lever positioned so it cannot be readily operated (6.2.7 (b)) | 1 |
| Central Front Upper Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Offside Front Brake component inadequately mounted (1.1.21 (c)) | 1 |
| Handlebar restricted in free movement from lock to lock o/s switch gear hitting tank (2.1.4 (c)) | 1 |
| Offside Shock absorber has a serious fluid leak fork seal leak (5.3.2 (b)) | 1 |
| Front Steering damper ineffective (2.1.4 (d) (i)) | 1 |
| Brake excessively binding (1.2.1 (f)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Outer Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |