| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 53 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 31 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 25 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 24 |
| Steering headbearing has excessive free play |2.2.2| | 23 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 21 |
| Rear reflector on motorcycle missing |1.4.1| | 19 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 14 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Rear reflector on motorcycle obscured |1.4.1| | 9 |
| Registration plate issues | 8 |
| Horn not working |1.7.3a| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 7 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 5 |
| Direction indicators not working |1.5.1c| | 5 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 5 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Headlamp insecure |1.2.3b| | 5 |
| Nearside Front Direction indicator not working |1.5.1c| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 4 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 4 |
| Exhaust mounting missing |7.1.1c| | 4 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Registration plate lamp issues | 3 |
| Front Headlamp insecure |1.2.3b| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Motorcycle structure excessively distorted |6.1.1a| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Brake lever insecure |3.1.2a| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Brake lever insecure |3.1.2a| | 2 |
| Front Handlebar deformed |2.1.1b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Stop lamp affected by the operation of the horn |1.3.2| | 2 |
| Front suspension assembly component excessively bent |2.3.1| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Headlamp insecure |4.1.1 |c|| | 2 |
| An item not tested |Manual| | 2 |
| Rear Brake lever mounting insecure |3.1.2a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| 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| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Brake lever cannot be released smoothly |3.1.3d| | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front position lamp insecure |1.1.1c| | 2 |
| Centre Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Upper Riders seat insecure |6.2.1a| | 1 |
| Offside Rear Lower Exhaust mounting missing |7.1.1c| | 1 |
| Brake hose damaged | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Offside Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Direction indicator not working all |1.5.1c| | 1 |
| Rear Brake lever attachment screws loose |3.1.2b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. throttle |2.1.1c| | 1 |
| Handlebar deformed bent |2.1.1b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering r/h lock |2.1.2a| | 1 |
| Offside Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Stop lamp not working from front control |4.3.1 |a| |ii|| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Rear Plate brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.B1c| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Headlamp missing |1.2.3a| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Brake lever pivots excessively worn |3.1.3a| | 1 |
| Rear Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Centre Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Front Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| All direction indicators adversely affected by the operation of another lamp |4.4.3 |b|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Brake lever attachment screws missing |3.1.2b| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Fuel pipe union leaking |7.2.1a| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Brake performance not tested lever sticking on (1.2.1 (g)) | 1 |
| Rear Brake performance not tested brake sticking on (1.2.1 (g)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Brake disc significantly and obviously worn Worn below 3.2mm limit (1.1.14 (a) (i)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Brake lever pivots excessively worn |3.1.3a| | 1 |
| Brake lever mounting insecure |3.1.2a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Rear Fuel cap sealing washer torn |7.2.2c| | 1 |
| Nearside Rear Fuel system component leaking |7.2.1a| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking steering stem bent |6.1.1c| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Front suspension assembly component loose |2.3.1| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Lower Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Offside Rear Upper Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear Lower Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Central Front Indicator tell tale not functioning |1.5.2| | 1 |
| Central Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Rear Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Roller brake test No brake control achieves an efficiency of 30% |1.2.2 |a| |i|| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Front Headlamp aim beam image too far to the left |1.6.4| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |