| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 42 |
| Registration plate lamp issues | 33 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 11 |
| Front Brake excessively binding (1.2.1 (f)) | 10 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 9 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 9 |
| Registration plate issues | 8 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 8 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Front Brake excessively binding |1.2.1 |f|| | 6 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 6 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 6 |
| Rear Brake excessively binding (1.2.1 (f)) | 6 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 5 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 5 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 5 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Horn not working |1.7.3a| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 2 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 2 |