| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 69 |
| Registration plate issues | 58 |
| Rear reflector on motorcycle missing |1.4.1| | 46 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 16 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 11 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Horn not working |1.7.3a| | 10 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 8 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Drive chain excessively tight |6.2.1d| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Registration plate lamp issues | 5 |
| Nearside Front Direction indicator not working |1.5.1c| | 5 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 5 |
| Headlamp insecure |1.2.3b| | 5 |
| 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| | 5 |
| Brake hose excessively deteriorated | 5 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 5 |
| Nearside Front Footrest insecure |6.2.1a| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 4 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front Position lamp not working (4.2.1 (a)) | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Nearside Rear Footrest insecure |6.2.1a| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Nearside Steering lock stop ineffective |2.1.3| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Offside Front Brake disc|s| insecure |3.2.A1g| | 3 |
| Front Direction indicators not working |1.5.1c| | 3 |
| Rear Direction indicators not working |1.5.1c| | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Footrest insecure |6.2.1a| | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Rear Hydraulic brake control creeps under load. |3.1.4a| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Nearside Steering lock stop missing |2.1.3| | 2 |
| Offside Steering lock stop missing |2.1.3| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Direction indicator missing |1.5.1a| | 2 |
| Nearside Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 2 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Nearside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Nearside Front Direction indicator missing |1.5.1a| | 2 |
| Offside Front Direction indicator missing |1.5.1a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front Direction indicator deteriorated and function impaired |1.5.3a| | 2 |
| Nearside Front Brake disc|s| insecure |3.2.A1g| | 2 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| 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| | 2 |