| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 58 |
| Horn not working |1.7.3a| | 23 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 19 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 19 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Registration plate issues | 14 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 13 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 10 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Headlamp aim beam image kick up to the offside |1.6| | 10 |
| Riders seat insecure |6.2.1a| | 10 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Throttle operating incorrectly |6.2.1f| | 7 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Offside Rear Direction indicator not working |1.5.1c| | 5 |
| Offside Front Direction indicator not working |1.5.1c| | 5 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 5 |
| Brake pipe excessively corroded | 5 |
| Nearside Front Direction indicators not working |1.5.1c| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Fuel system component insecure |7.2.1b| | 3 |
| Rear Position lamp not working |4.2.1 |a|| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Position lamp switch faulty |1.1.4a| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Seat insecure |6.2.1a| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Front position lamp missing |1.1.1a| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Offside Fuel system component leaking |7.2.1a| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Fuel hose leaking |7.2.1a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| 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 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Registration plate lamp issues | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |