| Most common failures | No# failures |
|---|
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Headlamp aim out of alignment | 13 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Registration plate issues | 8 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| 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| | 3 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 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 handling |2.5.1| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Centre Front Fuel cap sealing washer missing |7.2.2c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Motorcycle structure adversely modified |6.1.1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Brake component has an inadequate repair |3.1.5| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Front Indicator tell tale not functioning |1.5.2| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicator missing All |1.5.1a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Brake hose fouling Fouling rear brake linkage |3.2.B3b| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Front Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Braking system does not have an approriate system/s fitted according to its age caliper missing |3.1.1| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Brake lever mounting cracked |3.1.2c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Horn not working |1.7.3a| | 1 |
| Front Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Wheel fixing missing |single fixing| |5.2.1 |a| |ii|| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Nearside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Centre Front Lower Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake component is excessively corroded |3.1.5| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Outer Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake component is fractured |3.1.5| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Steering linkage locking device missing spindle (2.1.3 (d)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |