| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 46 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 22 |
| Registration plate lamp issues | 20 |
| Brake hose damaged | 19 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 18 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 13 |
| Front Brake excessively binding (1.2.1 (f)) | 13 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 13 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 13 |
| Stop lamp remains on when the brakes are released | 12 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 10 |
| Registration plate issues | 10 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 10 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 10 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Front Position lamp not working (4.2.1 (a)) | 9 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 8 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 7 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Horn not working (7.7 (a) (ii)) | 6 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 5 |
| Riders seat insecure |6.2.5 |a| |ii|| | 5 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 5 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 4 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 4 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Horn not working (7.7 (a)) | 4 |
| Riders seat insecure (6.2.5 (a) (ii)) | 4 |
| Horn not working |1.7.3a| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Headlamp aim not tested (4.1.2 (b)) | 3 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 3 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Indicator switch insecure |1.5.4| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Brake grabbing severely (1.2.1 (c)) | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 2 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Brake lagging in operation (1.2.1 (d)) | 2 |
| Steering linkage locking device ineffective (2.1.3 (d)) | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Position lamp not working Dip Beam Not Working. |4.2.1 |a|| | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 2 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Offside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Offside Front All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Offside Rear All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 2 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 2 |
| Front Brake excessively binding front brake binding (1.2.1 (f)) | 2 |