| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 62 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 27 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 27 |
| Registration plate lamp issues | 25 |
| Parking brake: efficiency below requirements |3.7.B.7| | 16 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 13 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 12 |
| Rear parking brake recording little or no effort | 10 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 9 |
| Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 8 |
| Front Position lamp not working (4.2.1 (a) (ii)) | 7 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 7 |
| Nearside Front Valve stem seriously damaged (5.2.3 (j)) | 6 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 6 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 6 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 5 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 5 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 5 |
| Nearside Rear Shock absorbers has a serious fluid leak | 5 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 4 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 4 |
| Front Position lamp not working |4.2.1 |a|| | 4 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 4 |
| Parking brake lever defective so that it cannot be satisfactorily operated (1.1.6 (d)) | 4 |
| Stop lamp(s) remains on when the brakes are released (4.3.2 (a) (iii)) | 4 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 4 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 4 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 4 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Steering head bearings has excessive wear or free play (2.2.2 (g)) | 3 |
| All direction indicators not working (4.4.1 (a) (ii)) | 3 |
| Parking brake efficiency below requirements |3.7.E.1| | 3 |
| Registration plate issues | 3 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Offside Rear Shock absorbers has a serious fluid leak | 3 |
| Front Direction indicator incorrect colour (4.4.3 (a)) | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 3 |
| Headlamp aim projected beam image is obviously incorrect |4.1.2 |c|| | 3 |
| Rear reflector missing |1.5.1a| | 3 |
| Offside Front Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 2 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Rear Direction indicator incorrect colour (4.4.3 (a)) | 2 |
| Nearside Position lamp not working (4.2.1 (a) (ii)) | 2 |
| Hazard warning switch inoperative |4.4.2 |a| |ii|| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Fuel cap/sealing device missing (6.1.3 (b) (i)) | 2 |
| Central Rear Hydraulic brake calliper leaking and brake disc contaminated (1.1.16 (b) (i)) | 2 |
| rear brake recording little or no effort |3.7.B.5a| | 2 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Steering system fouling (2.1.4 (a)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Nearside Rear Direction indicator insecure |1.4.A.2b| | 2 |
| Offside Rear Direction indicator insecure |1.4.A.2b| | 2 |
| Offside Front Shock absorbers has a serious fluid leak | 2 |
| Rear Parking brake efficiency below requirements (1.4.2 (a) (i)) | 2 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 2 |
| Rear Brake disc contaminated (1.1.14 (b)) | 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 Rear Direction indicator not working |1.4.A.2c| | 2 |
| Exhaust system not adequately supported |7.1.1| | 2 |
| Offside Stop lamp not working |1.2.1b| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Suspension arm pin or bush excessively worn swingarm / engine mount (5.3.4 (a) (i)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Headlamp not working on dipped beam |1.7.5a| | 2 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 2 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 2 |
| Brake performance not tested (1.2.1 (g)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Parking |secondary brake| on a single line braking system grabbing severely |1.3.1 |c|| | 2 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 2 |
| Headlamp aim beam image obviously incorrect |1.8.A.1b| | 2 |