| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 65 |
| Registration plate lamp issues | 24 |
| Drive chain excessively loose |6.2.1d| | 17 |
| Registration plate issues | 17 |
| Rear reflector missing (4.8.2 (a) (ii)) | 14 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 7 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 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)) | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Horn not working (7.7 (a)) | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 3 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 3 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Exhaust system insecure |6.1.2 |a|| | 2 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 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 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 2 |