| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 180 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 38 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 33 |
| Registration plate issues | 33 |
| Drive chain excessively loose |6.2.1d| | 28 |
| Front Brake excessively binding (1.2.1 (f)) | 26 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 24 |
| Registration plate lamp issues | 21 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 21 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 19 |
| Drive chain worn to excess |6.2.1e| | 19 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 18 |
| Rear Brake excessively binding (1.2.1 (f)) | 17 |
| Horn not working |1.7.3a| | 16 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 15 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 14 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Throttle operating incorrectly |6.2.1f| | 12 |
| Horn not working (7.7 (a) (ii)) | 12 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 11 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Horn not working |7.7 |a| |ii|| | 11 |
| Rear reflector missing (4.8.2 (a) (ii)) | 11 |
| Stop lamp remains on when the brakes are released | 10 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 9 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 8 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 8 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Headlamp aim beam image kick up to the offside |1.6| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 6 |
| Rear reflector missing |4.8.2 |a| |ii|| | 6 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 6 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 6 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 5 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 5 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 5 |
| Front Brake excessively binding |1.2.1 |f|| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 5 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Offside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 5 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 5 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 5 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 5 |
| Horn not working (7.7 (a)) | 5 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 4 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 4 |
| Nearside Front Direction indicators not working |1.5.1c| | 4 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 4 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 4 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Front Position lamp not working (4.2.1 (a)) | 4 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 4 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 4 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 4 |