| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 196 |
| Registration plate issues | 40 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 29 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 28 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 28 |
| Registration plate lamp issues | 20 |
| 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| | 15 |
| Rear Brake excessively binding (1.2.1 (f)) | 15 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 14 |
| Front Brake excessively binding (1.2.1 (f)) | 14 |
| Horn not working |1.7.3a| | 13 |
| Drive chain excessively loose |6.2.1d| | 13 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 13 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 12 |
| Rear reflector missing (4.8.2 (a) (ii)) | 12 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 10 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 9 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Horn not working |7.7 |a| |ii|| | 8 |
| Horn not working (7.7 (a) (ii)) | 8 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 7 |
| Horn not working (7.7 (a)) | 7 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Stop lamp remains on when the brakes are released | 6 |
| Front Brake excessively binding |1.2.1 |f|| | 6 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 6 |
| Front Position lamp not working (4.2.1 (a)) | 6 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Rear Brake excessively binding |1.2.1 |f|| | 5 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 5 |
| Front Position lamp not working |4.2.1 |a|| | 5 |
| Rear reflector missing |4.8.2 |a| |ii|| | 5 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 5 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 5 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 5 |
| Offside Front Direction indicators not working |1.5.1c| | 4 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 4 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 4 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 4 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 4 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 3 |
| Horn control not functioning. |1.7.2b| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 3 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 3 |
| Headlamp aim not tested (4.1.2 (b)) | 3 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |