| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 105 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 25 |
| Registration plate issues | 23 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 22 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 18 |
| Horn not working |1.7.3a| | 17 |
| Registration plate lamp issues | 16 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 16 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 14 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 12 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 10 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Drive chain worn to excess |6.2.1e| | 10 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Fuel system component leaking |7.2.1a| | 7 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 7 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Headlamp incorrect colour |1.2.1| | 3 |
| 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| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Direction indicator not working |1.5.1c| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear Footrest missing |6.2.1a| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Fuel pipe leaking |7.2.1a| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Rear position lamp missing |1.1.1a| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Rear An item not tested |Manual| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Horn is not continous or uniform |1.7.3c| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Nearside Rear Lower Drive chain excessively loose Drive Chain Is Loose (6.1.7 (c) (i)) | 2 |