| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 60 |
| Registration plate issues | 29 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 28 |
| Rear reflector on motorcycle missing |1.4.1| | 24 |
| Horn not working |1.7.3a| | 20 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| 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| | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 12 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Drive chain excessively tight |6.2.1d| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Offside Front Footrest insecure |6.2.1a| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Horn not working |7.7 |a| |ii|| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 5 |
| Nearside Front Footrest insecure |6.2.1a| | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 4 |
| Registration plate lamp issues | 4 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Nearside Footrest insecure |6.2.1a| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Offside Footrest insecure |6.2.1a| | 2 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Front Position lamp not working (4.2.1 (a)) | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear Brake cylinder insecurely mounted |3.2.B1a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Nearside Front Upper Front suspension assembly component loose |2.3.1| | 2 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |