| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 55 |
| Registration plate lamp issues | 44 |
| Stop lamp remains on when the brakes are released | 39 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 39 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 25 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 25 |
| Front Brake excessively binding (1.2.1 (f)) | 16 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 15 |
| Horn not working (7.7 (a)) | 15 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 14 |
| Headlamp aim not tested (4.1.2 (b)) | 13 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 12 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 12 |
| Registration plate issues | 10 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 10 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 9 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 9 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 8 |
| Horn not working (7.7 (a) (ii)) | 7 |
| All direction indicators not working (4.4.1 (a) (ii)) | 7 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 6 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 6 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 6 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 5 |
| Horn not working |7.7 |a| |ii|| | 5 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 5 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 5 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 5 |
| Exhaust system insecure (6.1.2 (a)) | 5 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 5 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 4 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Riders seat insecure (6.2.5 (a) (ii)) | 4 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 3 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 3 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Horn sound not in accordance with requirements (7.7 (c)) | 3 |
| 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)) | 3 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 3 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 2 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Front Headlamp aim not tested (4.1.2 (b)) | 2 |
| Central Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Rear Brake lever insecure (1.1.2 (e) (i)) | 2 |
| Nearside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Front Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 2 |
| Front Brake hose excessively damaged (1.1.12 (b) (ii)) | 2 |
| Front Headlamp light intensity severely reduced (4.1.4 (a)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front 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 |
| Brake hose excessively deteriorated | 2 |
| Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 2 |
| Rear All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 2 |
| Handlebar mounting so insecure that steering is adversely affected (2.2.1 (a) (ii)) | 2 |