| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Registration plate issues | 7 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front suspension assembly component excessively bent |2.3.1| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Brake performance not tested not recorded excessive fluctuation (1.2.1 (g)) | 1 |
| Position lamp switch does not illuminate all position lamps with a single operation (4.2.2 (a)) | 1 |
| Position lamp switch does not operate in accordance with the requirements (4.2.2 (a)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working not working on handle bar lever (4.3.1 (a) (ii)) | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking Bolt missing from centre stand |6.1.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 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 |
| Nearside Rear Upper Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Offside Rear Upper Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Rear Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Nearside Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Stop lamp not working Switch lubricated and exercised now OK (4.3.1 (a) (ii)) | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| 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 |
| Sidecar suspension has an insecure unit. |5.2.3a| | 1 |
| Sidecar wheel alignment has excessive toe-out |5.3.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Outer Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Brake pedal anti-slip provision missing (1.1.2 (c)) | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied actuating rod too short (1.1.2 (d)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Exhaust system insecure springs missing (6.1.2 (a)) | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |