| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 73 |
| Registration plate lamp issues | 64 |
| Drive chain excessively loose |6.2.1d| | 20 |
| Horn not working |1.7.3a| | 19 |
| Horn not working (7.7 (a)) | 13 |
| Registration plate issues | 13 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 11 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 10 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Front Brake excessively binding (1.2.1 (f)) | 8 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 8 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Horn not working (7.7 (a) (ii)) | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Horn not working |7.7 |a| |ii|| | 5 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 5 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 4 |
| Nearside Front Footrest insecure |6.2.1a| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 3 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 3 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 3 |
| Front position lamp incorrect colour |1.1.2a| | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 3 |
| Front Horn not working (7.7 (a)) | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 3 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Footrest insecure |6.2.1a| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 2 |
| Rear Shock absorber has an excessively worn bush (5.3.2 (c)) | 2 |
| Nearside Rear Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Front Front position lamp incorrect colour |1.1.2a| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Front Horn not working |7.7 |a| |ii|| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Nearside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 2 |
| Horn control not functioning. |1.7.2b| | 2 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Offside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 2 |