| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Registration plate issues | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Horn not working |1.7.3a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Rear Sidecar direction indicator not working |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Nearside Front Sidecar direction indicator not working |1.5.1c| | 2 |
| Sidecar attachment insecure |5.1.1b| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Rear spring worn and seriously weakened |2.4A1b|ii|| | 1 |
| Offside Rear spring worn and seriously weakened |2.4A1b|ii|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Offside Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Offside Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering damper insecure |2.1.2d| | 1 |
| Sidecar wheel bearings have excessive free play |5.2.3c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Rear Sidecar rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Sidecar front position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Outer Front Upper Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Upper Horn not working |1.7.3a| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Brake lever cracked |3.1.2c| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |