| Most common failures | No# failures |
|---|
| Registration plate issues | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Headlamp aim out of alignment | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Direction indicator missing |1.5.1a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Direction indicator missing |1.5.1a| | 2 |
| Rear Direction indicator missing |1.5.1a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 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 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Headlamp dipped beam affected by the operation of another lamp incorrectly wired |1.2.2c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid out top of cylinder |3.2.B1e| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Brake performance not tested master cylinder burst |3.3| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front control |1.3.1a| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |