| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 28 |
| Rear Position lamp not working (4.2.1 (a)) | 10 |
| Rear Brake excessively binding (1.2.1 (f)) | 9 |
| Front Position lamp not working (4.2.1 (a)) | 7 |
| Registration plate lamp issues | 7 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 6 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 4 |
| Horn not working (7.7 (a)) | 4 |
| Registration plate issues | 3 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 3 |
| Front Shock absorber likely to become detached (5.3.2 (a) (ii)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Front Suspension component ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 2 |
| Front Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Brake disc significantly and obviously worn mounting rivets (1.1.14 (a) (i)) | 1 |
| Brake disc significantly and obviously worn rear disc (1.1.14 (a) (i)) | 1 |
| Brake performance not tested Not carried out due to brake line condition (1.2.1 (g)) | 1 |
| Offside Front Brake hose bulging under pressure (1.1.12 (d)) | 1 |
| Offside Front Brake hose damaged and likely to fail (1.1.12 (a)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Nearside Rear Position lamp adversely affected by the operation of another lamp Tail lamp turns off when indicator illuminated , turns on when indicator turns off (4.2.3 (b)) | 1 |
| Offside Rear Position lamp adversely affected by the operation of another lamp Tail lamp turns off when indicator illuminated , turns on when indicator turns off (4.2.3 (b)) | 1 |
| Rear wheel bearings have excessive free play para-lever bearings (2.4.A.2c) | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort (3.3.A1d) | 1 |
| Front All position lamps not working (4.2.1 (a)) | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock Near side and offside (2.1.4 (b)) | 1 |
| Rear reflector reflecting white to the rear (4.8.2 (a) (ii)) | 1 |
| Rear Brake hose bulging under pressure (1.1.12 (d)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Central Front Horn not working (7.7 (a) (ii)) | 1 |
| Front Brake disc significantly and obviously worn Front nearside disc washers missing (1.1.14 (a) (i)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Offside Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up Bevel drive. (5.1.3 (a) (ii)) | 1 |
| Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim not tested dipped beam flikering (4.1.2 (b)) | 1 |
| Nearside Front Steering linkage component insecure (2.1.3 (a) (i)) | 1 |
| Nearside Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen incorrect bulb fitted (4.1.2 (a)) | 1 |
| Front Brake disc significantly and obviously worn O/S disc bobbins excessively worn (1.1.14 (a) (i)) | 1 |
| Offside Front Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Brake disc insecure (1.1.14 (a) (ii)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Stop lamp not working Front brake lever switch not working (4.3.1 (a) (ii)) | 1 |
| Front Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 1 |
| Nearside Rear Brake hose connection leaking on an air braking system To caliper (1.1.12 (c) (i)) | 1 |
| Stop lamp(s) remains on when the brakes are released From rear control (4.3.2 (a) (iii)) | 1 |
| Front Steering linkage ball joint has excessive play (2.1.3 (b) (i)) | 1 |
| Front Lower Steering linkage ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii)) | 1 |
| Rear Brake hose leaking Rear brake pipe leaking (1.1.12 (c)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak Nearside front fork leaking (5.3.2 (b)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Footrest insecure gearchange (6.2.12 (a)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock steering stop broken rh lock (2.1.4 (b)) | 1 |
| Throttle operating incorrectly sticking (6.2.7 (a) (i)) | 1 |
| Offside Front Brake disc insecure wavy washers missing on floating disc (1.1.14 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Offside Fuel hose leaking injector (6.1.3 (b) (i)) | 1 |
| Shock absorber missing (5.3.2 (a) (ii)) | 1 |
| Front Suspension arm ball joint dust cover no longer prevents the ingress of dirt lower (5.3.4 (b) (ii)) | 1 |
| Front Stop lamp not working control (4.3.1 (a) (ii)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Brake component insecure Front brake hose connection (1.1.21 (c)) | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Brake excessively binding Both front and rear brakes binding (1.2.1 (f)) | 1 |
| Front Lower Steering linkage ball joint dust cover insecure so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Nearside Front Brake component insecure (1.1.21 (c)) | 1 |
| Front Steering linkage ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Rear Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |