| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 127 |
| Registration plate issues | 53 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 34 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 30 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 25 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 22 |
| Registration plate lamp issues | 22 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 21 |
| Horn not working |1.7.3a| | 20 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 19 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 17 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 17 |
| Front Brake excessively binding (1.2.1 (f)) | 17 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 15 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 13 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Rear Position lamp not working (4.2.1 (a)) | 10 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 9 |
| Stop lamp remains on when the brakes are released | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 8 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 8 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Stop lamp remains on when the brake is released |1.3.1e| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Throttle operating incorrectly |6.2.1f| | 7 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 7 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 7 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 6 |
| Horn not working (7.7 (a)) | 6 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Front Position lamp not working |4.2.1 |a|| | 5 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Offside Front Direction indicator not working |1.5.1c| | 5 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Offside Front Brake disc|s| insecure |3.2.A1g| | 5 |
| Rear Brake excessively binding (1.2.1 (f)) | 5 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 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 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Nearside Front Brake disc|s| insecure |3.2.A1g| | 4 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 4 |
| Offside Front Direction indicators not working |1.5.1c| | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Steering damper ineffective |2.1.2d| | 3 |
| Rear Position lamp not working |4.2.1 |a|| | 3 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 3 |
| Front position lamp incorrect colour |1.1.2a| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 3 |