| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 80 |
| Headlamp aim out of alignment | 39 |
| Registration plate issues | 33 |
| Rear reflector on motorcycle missing |1.4.1| | 22 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 16 |
| Rear reflector missing (4.8.2 (a) (ii)) | 14 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 10 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 8 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 7 |
| Horn not working (7.7 (a)) | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 5 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 5 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 5 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 5 |
| Rear reflector missing |4.8.2 |a| |ii|| | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 4 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 4 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 3 |
| Offside Rear Footrest missing (6.2.12 (a)) | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 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 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Rear Footrest missing (6.2.12 (a)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Nearside Drive chain excessively loose (6.1.7 (c) (i)) | 2 |