| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 209 |
| Registration plate lamp issues | 84 |
| Registration plate issues | 84 |
| Stop lamp remains on when the brakes are released | 76 |
| Front Brake excessively binding (1.2.1 (f)) | 66 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 61 |
| Rear reflector missing (4.8.2 (a) (ii)) | 42 |
| Rear Position lamp not working (4.2.1 (a)) | 39 |
| Horn not working (7.7 (a)) | 30 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 27 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 26 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 25 |
| Rear Position lamp not working |4.2.1 |a|| | 24 |
| Horn not working (7.7 (a) (ii)) | 23 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 22 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 21 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 20 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 20 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 20 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 19 |
| Stop lamp not working (4.3.1 (a) (ii)) | 19 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 18 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 14 |
| Rear Brake excessively binding (1.2.1 (f)) | 14 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 14 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 13 |
| Horn not working |7.7 |a| |ii|| | 13 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 13 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 13 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 13 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 12 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 11 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 11 |
| Riders seat insecure (6.2.5 (a) (ii)) | 11 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 10 |
| Stop lamp not working |4.3.1 |a| |ii|| | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Front Brake excessively binding |1.2.1 |f|| | 10 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 10 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 10 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 10 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 9 |
| All direction indicators not working (4.4.1 (a) (ii)) | 9 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 8 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Horn not working |1.7.3a| | 8 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 8 |
| Headlamp aim not tested (4.1.2 (b)) | 8 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 8 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 8 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 8 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 7 |
| Direction indicators not working |1.5.1c| | 7 |
| 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)) | 7 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 7 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 7 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 7 |
| Front Position lamp not working (4.2.1 (a)) | 7 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Rear reflector missing |4.8.2 |a| |ii|| | 6 |
| Riders seat insecure |6.2.1a| | 6 |
| Fuel cap sealing washer missing |7.2.2c| | 6 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 6 |
| Riders seat insecure |6.2.5 |a| |ii|| | 6 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 6 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 6 |
| Offside Rear Direction indicators not working |1.5.1c| | 5 |
| Offside Rear Direction indicator not working |1.5.1c| | 5 |
| Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 5 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 5 |
| Horn sound not in accordance with requirements (7.7 (c)) | 5 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 5 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 5 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 5 |