| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 60 |
| Registration plate lamp issues | 21 |
| Brake hose damaged | 18 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 17 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 15 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 15 |
| Stop lamp remains on when the brakes are released | 13 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 12 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 12 |
| Front Brake excessively binding (1.2.1 (f)) | 12 |
| Registration plate issues | 11 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 11 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 10 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 10 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 9 |
| Horn not working (7.7 (a) (ii)) | 9 |
| Riders seat insecure (6.2.5 (a) (ii)) | 8 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 6 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 6 |
| Horn not working |7.7 |a| |ii|| | 6 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 5 |
| Horn not working (7.7 (a)) | 5 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 5 |
| Front Position lamp not working (4.2.1 (a)) | 5 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 5 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 4 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 4 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 4 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 4 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 4 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 4 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 4 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Horn sound not in accordance with requirements (7.7 (c)) | 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 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Headlamp insecure (4.1.1 (c)) | 3 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 3 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Front Brake hose excessively damaged (1.1.12 (b) (ii)) | 2 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 2 |
| Steering headbearing excessively stiff or notchy notchy (2.2.2 (f) (i)) | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Offside Front Position lamp not working (4.2.1 (a)) | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Offside Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Position lamp not working (4.2.1 (a)) | 2 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 2 |
| Headlamp aim not tested |4.1.2 |b|| | 2 |
| Nearside Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front All position lamps not working (4.2.1 (a)) | 2 |