| Most common failures | No# failures |
|---|
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 39 |
| Headlamp aim out of alignment | 35 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 33 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 29 |
| Steering headbearing has excessive free play |2.2.2| | 18 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 15 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 13 |
| Front wheel bearings have excessive free play |2.3.5b| | 13 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Registration plate issues | 9 |
| Nearside Front Direction indicator not working |1.5.1c| | 8 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Headlamp insecure |1.2.3b| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Direction indicators not working |1.5.1c| | 5 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Horn not working |1.7.3a| | 5 |
| Nearside Rear Direction indicator not working |1.5.1c| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Offside Front Direction indicator not working |1.5.1c| | 5 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Headlamp aim not tested |1.6| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 2 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Rear position lamp missing |1.1.1a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| An item not tested |Manual| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 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 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Front position lamp incorrect colour |1.1.2a| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Outer Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Offside 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 Steering linkage has excessive free play |2.2.2| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Indicator tell tale not operating correctly |1.5.2| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Sidecar rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Rear wheel has a loose wheel bolt|s| |4.2.3a| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Rear position lamp missing |1.1.1a| | 1 |
| Offside Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Centre Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Brake cable excessively corroded |3.2.A1b| | 1 |
| Lower Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Position lamp switch faulty |1.1.4a| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Riders seat insecure does not lock |6.2.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies dose not illuminate from front brake |1.3.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Nearside Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Brake cable knotted |3.2.A1b| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Rear Lower Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Offside Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Rear position lamp incorrect colour |1.1.2b| | 1 |
| Centre Front Upper Direction indicators not working |1.5.1c| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Rear Rear position lamp insecure |1.1.1c| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Nearside Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 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 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Front Brake master cylinder has a seized master cylinder pivot. |3.2.B5| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Lower Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Rear Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Registration plate lamp issues | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 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 |
| Front Steering headbearing has excessive wear or free play very loose |2.2.2 |f| |i|| | 1 |
| Brake pipe inadequately supported |3.2.B2b| | 1 |