| Most common failures | No# failures |
|---|
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 34 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 30 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 24 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 18 |
| Registration plate issues | 17 |
| Headlamp aim out of alignment | 17 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 17 |
| Steering headbearing has excessive free play |2.2.2| | 17 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 16 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Riders seat insecure |6.2.1a| | 7 |
| Front wheel bearings are excessively rough |2.3.5b| | 7 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Rear Brake lever insecure |3.1.2a| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Offside Front Direction indicator not working |1.5.1c| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Horn not working |1.7.3a| | 5 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 5 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 5 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 5 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Horn is not a constant note |1.7.3c| | 5 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 4 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Front Front mudguard insecure |2.3.7| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| An item not tested |Manual| | 3 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Exhaust mounting missing |7.1.1c| | 3 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Stop lamp affected by the operation of the horn |1.3.2| | 3 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Nearside Direction indicator not working |1.5.1c| | 2 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Nearside Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Rear Brake cable excessively corroded |3.2.A1b| | 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 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Horn is not continous or uniform |1.7.3c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Front An item not tested |Manual| | 2 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Rear Brake lever mounting insecure |3.1.2a| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Built up wheel has a loose bolt/s |4.2.1c| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Lower Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Front wheel bearings are excessively tight |2.3.5b| | 1 |
| Nearside Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Centre Front Front wheel bearings are excessively tight |2.3.5b| | 1 |
| Centre Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Centre Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Centre Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Nearside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake master cylinder has a seized master cylinder pivot. |3.2.B5| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Floor brake test indicates a binding brake Front brake binding |3.3.C2c| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake lever attachment screws loose |3.1.2b| | 1 |
| Motorcycle structure cracked |6.1.1a| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Centre An item not tested |Manual| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment |1.1.15 |f|| | 1 |
| Centre Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Centre Front suspension assembly component excessively bent |2.3.1| | 1 |
| 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 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Offside Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Brake lever insecure |3.1.2a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Front Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Lower Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Upper Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Centre Rear Lower Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Brake lever is inoperative |3.1.3c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Brake performance not tested |3.3| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Rear Brake cable badly frayed |3.2.A1b| | 1 |
| Nearside Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Exhaust mounting missing |7.1.1c| | 1 |
| Rear Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Rear Position lamp not working |4.2.1 |a|| | 1 |
| Registration plate lamp issues | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Centre Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Offside Brake lever insecure |3.1.2a| | 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 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| 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 |
| Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Nearside Front Brake lever insecure |3.1.2a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Upper Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Centre Upper Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Centre Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |