| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 32 |
| Registration plate issues | 29 |
| Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| Rear reflector missing |4.8.2 |a| |ii|| | 6 |
| Stop lamp remains on when the brakes are released | 6 |
| Rear Position lamp not working |4.2.1 |a|| | 5 |
| 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 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Registration plate lamp issues | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Position lamp not working (4.2.1 (a)) | 2 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 2 |
| Rear 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 |
| Front Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Front Brake cylinder operating mechanism has excessive travel (1.1.16 (e) (i)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Drive belt pulley so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Drive belt so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Exhaust has a major leak of exhaust gases leaking on front manifold due to broken/missing stud |6.1.2 |a|| | 1 |
| Rear Position lamp light intensity significantly reduced |4.2.3 |a| |ii|| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Horn not working |1.7.3a| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking mirrors insecure hitting tank and or falling off |6.1.1c| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| 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|| | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Central Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Nearside Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Offside Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| 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| | 1 |
| Brake component insecure Front brake master banjo bolt loose (1.1.21 (c)) | 1 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Nearside Direction indicator obviously incorrectly positioned Indicators working opposite to instruction on rear |4.4.3 |a|| | 1 |
| Offside Direction indicator obviously incorrectly positioned Rear indicator working opposite to instruction |4.4.3 |a|| | 1 |
| Shock absorber has a serious fluid leak lh front fork leaking |5.3.2 |b|| | 1 |
| Fuel cap ineffective fuel cap seal badly perished |6.1.3 |b| |i|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Exhaust excessively deteriorated muffler bolt snapped muffler falling out |7.1.1a| | 1 |
| Nearside Direction indicators not working tell tail inop |1.5.1c| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |