| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 46 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 43 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 32 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 29 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 28 |
| Steering headbearing has excessive free play |2.2.2| | 22 |
| Rear reflector on motorcycle missing |1.4.1| | 21 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 16 |
| Registration plate issues | 16 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 15 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 14 |
| Headlamp insecure |1.2.3b| | 13 |
| Fuel cap sealing washer missing |7.2.2c| | 10 |
| Offside Front Direction indicator not working |1.5.1c| | 10 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 9 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 7 |
| Headlamp aim not tested |1.6| | 7 |
| Nearside Front Direction indicator not working |1.5.1c| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front suspension has inadequate damping effect. |2.3.6c| | 7 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Riders seat insecure |6.2.1a| | 5 |
| Front Headlamp insecure |1.2.3b| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Stop lamp emits other than a steady red light |1.3.1b| | 5 |
| Horn not working |1.7.3a| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Nearside Front Direction indicators not working |1.5.1c| | 4 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 4 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 4 |
| Fuel system component leaking |7.2.1a| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 4 |
| Rear reflector on motorcycle obscured |1.4.1| | 3 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 3 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Front position lamp insecure |1.1.1c| | 3 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 3 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Brake lever insecure |3.1.2a| | 3 |
| Rear position lamp incorrect colour |1.1.2b| | 3 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 3 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 3 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 3 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 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 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Brake lever mounting insecure |3.1.2a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Fuel hose leaking |7.2.1a| | 2 |
| Nearside Brake lever insecure |3.1.2a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 2 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |