| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 25 |
| Front Brake excessively binding (1.2.1 (f)) | 13 |
| Registration plate lamp issues | 8 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 5 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Rear Brake lagging in operation (1.2.1 (d)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Front Wheel bearing rough when rotated also slight free play (5.1.3 (b) (i)) | 1 |
| Nearside Position lamp switch does not illuminate all position lamps with a single operation Sticking badly! (4.2.2 (a)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Registration plate issues | 1 |
| Nearside Rear Brake has no recorded effort at a wheel No Braking Effort until Rear Brake was adjusted. (1.2.1 (a) (ii)) | 1 |
| Rear Brake lever pivot has excessive free play (1.1.1 (b)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Stop lamp does not illuminate by the operation of both brake controls n/s brake lever does illuminate the brake lights (4.3.2 (a) (iii)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced (6.1.1 (b) (ii)) | 1 |
| Nearside Stop lamp does not illuminate by the operation of both brake controls Switch stuck. Freed during test. (4.3.2 (a) (iii)) | 1 |
| Rear Wheel fixing missing (single fixing) (5.2.1 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Wheel alignment incorrect which adversely affects the handling Wheelbase is 2 inches shorter than standard. (2.4 (a)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Steering operation restricted in free movement from lock to lock hand guards (2.1.4 (c)) | 1 |
| Rear Brake lever pivot has excessive free play back brake comes back to handle bar (1.1.1 (b)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Rear Suspension arm mounting has an unsafe modification (5.3.3 (c) (i)) | 1 |