| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 31 |
| Stop lamp not working (4.3.1 (a) (ii)) | 12 |
| Front Position lamp not working (4.2.1 (a)) | 7 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 7 |
| Stop lamp remains on when the brakes are released | 6 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Rear Brake excessively binding (1.2.1 (f)) | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Registration plate lamp issues | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Central Front Horn not working (7.7 (a) (ii)) | 2 |
| Offside Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Registration plate issues | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Nearside Front Brake disc insecure (1.1.14 (a) (ii)) | 2 |
| All position lamps not working (4.2.1 (a)) | 2 |
| Fuel hose leaking (6.1.3 (b) (i)) | 2 |
| Central Front Position lamp not working (4.2.1 (a)) | 2 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Steering operation restricted in free movement from lock to lock brake pipe (2.1.4 (c)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Rear Position lamp adversely affected by the operation of another lamp inter action (4.2.3 (c)) | 1 |
| Offside Rear Position lamp adversely affected by the operation of another lamp inter action (4.2.3 (c)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Offside Fuel hose leaking (6.1.3 (b) (i)) | 1 |
| Offside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Rear Brake disc(s) excessively scored (3.2.A1l) | 1 |
| Headlamp aim headlamp damaged and function impaired (1.2.3a) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Offside Rear Suspension component pin or bush excessively worn swingarm bush/bearing (5.3.4 (a) (i)) | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake locking device missing (3.2.A1e) | 1 |
| Front Headlamp at least one does not illuminate on main beam (1.2.2a(ii)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Horn not working (1.7.3a) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Front Suspension component ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Fuel tank leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Front Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| All direction indicators not working nearside/offside not canceling correctly (4.4.1 (a) (ii)) | 1 |
| Front Position lamp missing (4.2.1 (a)) | 1 |
| Rear Brake performance not tested (1.2.1 (g)) | 1 |
| Rear Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Central Front Suspension component ball joint likely to become detached (5.3.4 (a) (ii)) | 1 |
| Suspension rod mounting has an unsafe modification (5.3.3 (c) (i)) | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Central Rear Upper Rear reflector missing rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Stop lamp switch with a delay in operation Rear brake switch faulty (4.3.2 (a) (ii)) | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Stop lamp not working Rear control (4.3.1 (a) (ii)) | 1 |
| Nearside Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Offside Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Offside Front Brake disc insecure (1.1.14 (a) (ii)) | 1 |
| Rear Stop lamp not working Not working with foot brake pedal (4.3.1 (a) (ii)) | 1 |
| Fuel hose leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Handlebar grip insecure to handlebar both (2.2.1 (d) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect no clear beam pattern (4.1.2 (c)) | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Rear Brake fluid contaminated (1.8 (a)) | 1 |
| Throttle operating incorrectly idle increasing on full lock (6.2.7 (a) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls fitted new bulb (4.3.2 (a) (iii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Offside Front Brake hose connection leaking (1.1.12 (c)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn diff mounting bushes worn (5.3.4 (a) (i)) | 1 |
| Rear Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Valve stem seriously damaged Front & Rear (5.2.3 (j)) | 1 |
| Front Shock absorber likely to become detached (5.3.2 (a) (ii)) | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp not working Foot (4.3.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Central Front Horn not working (7.7 (a)) | 1 |