| Most common failures | No# failures |
|---|
| Rear reflector missing (4.8.2 (a) (ii)) | 75 |
| Headlamp aim out of alignment | 66 |
| Registration plate issues | 40 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 34 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 20 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 17 |
| Registration plate lamp issues | 10 |
| Horn not working (7.7 (a)) | 7 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 6 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Offside Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 3 |
| Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 3 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Central Rear Upper Rear reflector missing (4.8.2 (a) (ii)) | 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 |
| Rear Footrest missing (6.2.12 (a)) | 2 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 2 |
| Central Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Headlamp reflector missing (4.1.1 (b) (ii)) | 2 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Shock absorber insecurely attached top shock mount loose (5.3.2 (a) (i)) | 1 |
| Offside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Rear All direction indicators obviously incorrectly positioned Incorrect Distance Apart. (4.4.3 (a)) | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Front Brake indicates excessive fluctuation of brake effort warped disc (s) (1.2.1 (e)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Brake component inadequately mounted Brake pump (1.1.21 (c)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Direction indicator obviously incorrectly positioned Rears too close together (4.4.3 (a)) | 1 |
| Headlamp aim projected beam image obviously incorrect tape fitted to head lamp (4.1.2 (c)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition silencer changed (8.1.1 (a)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Offside Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Horn not working loose wire (7.7 (a)) | 1 |
| Rear Drive chain excessively loose ADJUSTED DURING TEST (6.1.7 (c) (i)) | 1 |
| Rear Rear reflector missing FITTED DURING TEST (4.8.2 (a) (ii)) | 1 |
| Rear Brake master cylinder insecure (1.1.10 (c)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls Rear switch fault (4.3.2 (a) (iii)) | 1 |
| Rear Stop lamp not working switch fault (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Brake master cylinder leaking master cylinder Reservoir leaking (1.1.10 (b) (ii)) | 1 |
| Central Rear Wheel alignment incorrect which adversely affects the handling Wheel alignment incorrect (2.4 (a)) | 1 |
| Central Front Brake indicates excessive fluctuation of brake effort Brake indicates excessive fluctuation (1.2.1 (e)) | 1 |
| Stop lamp switch with a delay in operation Stop lamp intermittently works (4.3.2 (a) (ii)) | 1 |
| Nearside Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Offside Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Nearside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort moving 4 bars on brake tester while holding brake steady (1.2.1 (e)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort rear brake fluctuates 5 bars on brake tester (1.2.1 (e)) | 1 |
| Offside Rear Direction indicator light intensity significantly reduced (4.4.3 (a)) | 1 |
| Rear Inner Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort 55% Fluctuation (1.2.1 (e)) | 1 |
| Headlamp aim unable to be tested Dip beam not working (4.1.2 (b)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Front Exhaust has a major leak of exhaust gases Blowing at collector (6.1.2 (a)) | 1 |
| Rear All direction indicators obviously incorrectly positioned Requirement - 180mm between illuminating surfaces at the rear (4.4.3 (a)) | 1 |
| Rear All direction indicators obviously incorrectly positioned Too close together (minimum of 180mm at the rear is requirement) (4.4.3 (a)) | 1 |
| Handlebar restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Position lamp not working DRL not switch on and holding (4.2.1 (a)) | 1 |
| Footrest missing rear pegs missing (two seat motorcycle) (6.2.12 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort Disc Bent (1.2.1 (e)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Central Front Upper Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Central Front Upper Fuel cap ineffective cap will not open when screwed on tight (6.1.3 (b) (i)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Nearside Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |