| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 20 |
| Headlamp aim out of alignment | 12 |
| Registration plate issues | 9 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Horn not working |1.7.3a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Wheel spindle locking device ineffective split pin fitted (5.2.1 (d)) | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Fuel cap ineffective cap does not seal tight on sealing washer (6.1.3 (b) (i)) | 1 |
| Offside Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Stop lamp not working Replaced bulb (4.3.1 (a) (ii)) | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear 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 |
| Rear reflector on sidecar incorrectly positioned |1.4.2d| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Front shock absorber seal failed and leaking oil (2.3.3) | 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 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Handlebar retaining device loose bar clamps loose (2.2.1 (b) (i)) | 1 |