| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 64 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 43 |
| Headlamp aim out of alignment | 41 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 41 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 30 |
| Stop lamp remains on when the brakes are released | 26 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 15 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 14 |
| Headlamp aim not tested (4.1.2 (b)) | 13 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 13 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 13 |
| Horn not working (7.7 (a) (ii)) | 10 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 10 |
| Horn not working (7.7 (a)) | 10 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 9 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 9 |
| Front Brake excessively binding (1.2.1 (f)) | 7 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 6 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 6 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 5 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| All direction indicators not working (4.4.1 (a) (ii)) | 5 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 5 |
| Riders seat insecure (6.2.5 (a) (ii)) | 4 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 4 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 4 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 4 |
| Registration plate issues | 4 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 4 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 4 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 4 |
| Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 3 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Front Headlamp aim not tested (4.1.2 (b)) | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Exhaust system insecure (6.1.2 (a)) | 3 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 3 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 3 |
| Front Headlamp not working on dipped beam dipped beam not working (4.1.1 (a) (ii)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Central Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 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)) | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Handlebar mounting so insecure that steering is adversely affected (2.2.1 (a) (ii)) | 2 |
| Nearside Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 2 |
| Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Rear Brake lever insecure (1.1.2 (e) (i)) | 2 |