| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 103 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 89 |
| Rear reflector on motorcycle missing |1.4.1| | 76 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 72 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 53 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 45 |
| Registration plate issues | 32 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 29 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 28 |
| Steering headbearing has excessive free play |2.2.2| | 27 |
| Headlamp insecure |1.2.3b| | 27 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 22 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 22 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 22 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 22 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 21 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 20 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 15 |
| Rear reflector on motorcycle obscured |1.4.1| | 15 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 14 |
| Rear Brake lever insecure |3.1.2a| | 14 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 14 |
| Riders seat insecure |6.2.1a| | 12 |
| Headlamp aim not tested |1.6| | 12 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 11 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 11 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 11 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 10 |
| Direction indicators not working |1.5.1c| | 10 |
| Horn not working |1.7.3a| | 10 |
| Fuel cap sealing washer missing |7.2.2c| | 10 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 9 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 9 |
| Nearside Front Direction indicators not working |1.5.1c| | 9 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 8 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Offside Steering lock stop ineffective |2.1.3| | 8 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 8 |
| Front position lamp insecure |1.1.1c| | 8 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 8 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Front suspension has inadequate damping effect. |2.3.6c| | 7 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 7 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 7 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 6 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 6 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 6 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 6 |
| Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 6 |
| Nearside Front Direction indicator not working |1.5.1c| | 6 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Offside Front Direction indicators not working |1.5.1c| | 5 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 5 |
| Handlebar deformed |2.1.1b| | 5 |
| Nearside Steering lock stop ineffective |2.1.3| | 5 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 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 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Direction indicator not working |1.5.1c| | 4 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 4 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 4 |
| Front Headlamp insecure |1.2.3b| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 4 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Indicator switch insecure |1.5.4| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front suspension assembly component excessively bent |2.3.1| | 4 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 3 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 3 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 3 |
| Exhaust has part of the system missing |7.1.1a| | 3 |
| Front Front position lamp insecure |1.1.1c| | 3 |
| Handlebar mounting clamp loose |2.1.1a| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 3 |
| Rear Brake lever mounting insecure |3.1.2a| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |