| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Registration plate issues | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Horn not working |1.7.3a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 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 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Brake component is excessively corroded |3.1.5| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Steering operation restricted in free movement from lock to lock speedo cable & wiring fouling (2.1.4 (c)) | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Brake locking device insecure rear brake adjusting nut |3.2.A1e| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Centre Rear Lower Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Centre Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Lower Front suspension assembly has an insecure fork brace |2.3.4d| | 1 |
| Rear Brake component insecure hub linkage loose (1.1.21 (c)) | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| 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 wheel raised |2.2.1b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake rod excessively chafed |3.2.A1a| | 1 |
| 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| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Horn missing |1.7.1| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front suspension assembly component excessively bent |2.3.1| | 1 |
| Offside Front suspension assembly component excessively bent |2.3.1| | 1 |
| Offside Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Horn emits 2 or more alternating tones |1.7.3b| | 1 |