| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 163 |
| Registration plate issues | 53 |
| Rear reflector on motorcycle missing |1.4.1| | 24 |
| Rear reflector missing (4.8.2 (a) (ii)) | 19 |
| Rear Brake excessively binding (1.2.1 (f)) | 19 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 16 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 12 |
| Registration plate lamp issues | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear reflector missing |4.8.2 |a| |ii|| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Rear Brake excessively binding |1.2.1 |f|| | 6 |
| Stop lamp remains on when the brakes are released | 6 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 6 |
| Riders seat insecure |6.2.1a| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| 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|| | 4 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Riders seat insecure (6.2.5 (a) (ii)) | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 4 |
| 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| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Horn not working |1.7.3a| | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Brake grabbing severely (1.2.1 (c)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| 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)) | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Footrest insecure |6.2.1a| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 2 |
| Offside Front Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Offside Front Footrest insecure (6.2.12 (a)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Front Brake grabbing severely (1.2.1 (c)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |