| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 163 |
| Registration plate issues | 33 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 23 |
| Rear reflector on motorcycle missing |1.4.1| | 17 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 15 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 7 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 7 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Front position lamp incorrect colour |1.1.2a| | 4 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| 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| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Front position lamp incorrect colour |1.1.2a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Registration plate lamp issues | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Headlamp reflector seriously defective (4.1.1 (b) (ii)) | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 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 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 2 |