| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 12 |
| Stop lamp remains on when the brakes are released | 9 |
| Rear Position lamp not working (4.2.1 (a)) | 8 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Front Brake excessively binding (1.2.1 (f)) | 7 |
| Registration plate lamp issues | 6 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Registration plate issues | 5 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Rear Brake hose bulging under pressure (1.1.12 (d)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Stop lamp adversely affected by the operation of another lamp integrated indicators (4.3.3 (b)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Front Suspension rod ball joint likely to become detached Suspension ball joint loose (5.3.4 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. (3.3.A2b) | 1 |
| Rear Brake fluid reservoir fluid level dangerously low (3.2.B1d) | 1 |
| Rear Brake fluid reservoir leaking hydraulic fluid (3.2.B1e) | 1 |
| Front Lower Steering linkage ball joint worn to the extent there is a serious risk of detachment (2.1.3 (b) (ii)) | 1 |
| Front Brake hose bulging under pressure (1.1.12 (d)) | 1 |
| Brake hose excessively deteriorated | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake lagging in operation (1.2.1 (d)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Suspension arm ball joint likely to become detached (5.3.4 (a) (ii)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Direction indicator obviously incorrectly positioned less than 180mm separation distance (4.4.3 (a)) | 1 |
| Front Upper Brake hose leaking (1.1.12 (c)) | 1 |
| Front Upper Brake hose damaged and likely to fail (1.1.12 (a)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Central 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 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Brake disc contaminated Due to leaking oil from rear drive shaft housing. (1.1.14 (b)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Not Working From Front Control (4.3.2 (a) (iii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Brake hose bulging under pressure (1.1.12 (d)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 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 |
| Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Brake disc significantly and obviously worn rivetts (1.1.14 (a) (i)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Offside Direction indicator not working both (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working foot brake lever. (4.3.1 (a) (ii)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock also oil cooler fouling movement (2.1.4 (b)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Position lamp switch does not operate in accordance with the requirements (4.2.2 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar clutch lever now hits grip housing (2.2.1 (d) (ii)) | 1 |
| Brake fluid contaminated (1.8 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Shock absorber has negligible damping effect No movement in front suspension, Suspension excessively stiff. (5.3.2 (b)) | 1 |
| Headlamp aim projected beam image obviously incorrect U.S./Continental Headlight fitted. (4.1.2 (c)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort over 33% (1.2.1 (e)) | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Brake excessively binding front brake lever sticking on (1.2.1 (f)) | 1 |
| Rear Brake disc contaminated disc covered in fluid or oil and contaminated rear pads (1.1.14 (b)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Rear Wheel spoke excessively corroded (5.2.2 (d)) | 1 |
| Front Brake cylinder leaking (1.1.16 (b) (i)) | 1 |
| Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Rear Brake hose connection leaking (1.1.12 (c)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |