| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 19 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 14 |
| Registration plate issues | 10 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp aim not tested |1.6| | 4 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Horn is not a constant note |1.7.3c| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Fuel pipe leaking |7.2.1a| | 2 |
| Front Stop lamp missing |1.3.3a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Front Brake lever is inoperative |3.1.3c| | 2 |
| Fuel cap sealing washer missing |7.2.2c| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Nearside Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Throttle operating incorrectly Twist grip loose on handlebars |6.2.1f| | 1 |
| Front Fairings so located that it is likely to impede the steering Handle bar top cover insecure. |2.1.2e| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Offside Outer Direction indicators not working |1.5.1c| | 1 |
| Nearside Outer Direction indicators not working |1.5.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear suspension component excessively bent |2.4.A.1a| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Steering linkage has excessive free play |2.2.2| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Centre Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Offside Front Upper Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Rear Upper Direction indicators not working |1.5.1c| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Nearside Rear Rear spring fractured |2.4.A1b|i|| | 1 |
| Horn not working |1.7.3a| | 1 |
| Nearside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |