| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 80 |
| Headlamp aim out of alignment | 59 |
| Registration plate issues | 40 |
| Rear reflector on motorcycle missing |1.4.1| | 24 |
| Rear reflector missing (4.8.2 (a) (ii)) | 18 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 18 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 14 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 13 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 11 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 11 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Rear reflector missing |4.8.2 |a| |ii|| | 10 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 9 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 8 |
| Horn not working |1.7.3a| | 8 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 8 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 7 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 6 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 6 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Horn not working (7.7 (a)) | 5 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 5 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Horn control defective |1.7.2a| | 3 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 2 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |