| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 33 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 28 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 15 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 14 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 11 |
| Rear reflector on motorcycle obscured |1.4.1| | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Registration plate issues | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| 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| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 3 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 3 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Rear position lamp insecure |1.1.1c| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Brake lever insecure |3.1.2a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Centre Front Direction indicators not working all indicators inop |1.5.1c| | 2 |
| Centre Rear Headlamp at least one does not illuminate on dipped beam head lamp does not work |1.2.2a|i|| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies front switch |1.3.1a| | 2 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Nearside Direction indicator not working |1.5.1c| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Headlamp main beam flickers when tapped lightly by hand |1.2.2c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Motorcycle structure excessively damaged |6.1.1a| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Brake cable has a significantly damaged outer casing. |3.2.A1b| | 1 |
| Nearside Rear Brake lever insecure |3.1.2a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Centre Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Rear Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Rear Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Brake lever is inoperative |3.1.3c| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Lower Fuel pipe leaking |7.2.1a| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Inner Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Rear Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Front Lower Horn not working |1.7.3a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Offside 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 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Centre Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Centre Lower Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Rear Riders seat insecure |6.2.1a| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Fork yoke deformed |2.1.1b| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Centre Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Centre Rear Lower Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Headlamp missing |1.2.3a| | 1 |
| Front Brake lever insecure Locking device missing |3.1.2a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Front Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Upper Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Rear position lamp insecure |1.1.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |