| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 24 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 14 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 11 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 11 |
| Steering headbearing has excessive free play |2.2.2| | 10 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Registration plate issues | 5 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 4 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Horn not working |1.7.3a| | 4 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 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 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front suspension assembly component excessively corroded. |2.3.1| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Brake lever mounting insecure |3.1.2a| | 2 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Horn is not a constant note |1.7.3c| | 2 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Handlebar handgrip missing |2.1.1c| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 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 |
| Fuel system component leaking |7.2.1a| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Front Upper Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Offside Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 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 |
| Rear Rear suspension component seized |2.4A2a|ii|| | 1 |
| Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| An item not tested |Manual| | 1 |
| Rear An item not tested |Manual| | 1 |
| Rear Brake cable knotted |3.2.A1b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil fork seal leaking |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil fork seal leaking |2.3.3| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake component is fractured |3.1.5| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Centre Front Upper Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Nearside Front Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front brake light not working (4.3.2 (a) (iii)) | 1 |
| Centre Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Nearside Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Rear Brake lever insecure |3.1.2a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake component is excessively corroded |3.1.5| | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Nearside Front Direction indicator lens defective such that the emitted light is adversely affected (4.4.1 (b) (ii)) | 1 |
| Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Central Front Steering headbearing has excessive wear or free play Excessive free play (2.2.2 (f) (i)) | 1 |
| Nearside Front Direction indicator incorrect colour Showing white light due to broken amber lense (4.4.3 (a)) | 1 |
| Rear Stop lamp light intensity significantly reduced Only 1 bulb working (4.3.3 (a) (ii)) | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front An item not tested |Manual| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Brake cable has a significantly damaged outer casing. |3.2.A1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Nearside Rear Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Brake lever insecure |3.1.2a| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Brake lever insecure |1.1.2 |e| |i|| | 1 |
| Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Front Front suspension has severe distortion of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Brake lever attachment screws loose |3.1.2b| | 1 |
| Front All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |