| Most common failures | No# failures |
|---|
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 41 |
| Headlamp aim out of alignment | 37 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 30 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 23 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 22 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 19 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 16 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 13 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 13 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 12 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 7 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| Offside Rear Direction indicator not working |1.5.1c| | 7 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 6 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 6 |
| Front suspension has inadequate damping effect. |2.3.6c| | 5 |
| Headlamp insecure |1.2.3b| | 5 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 5 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 4 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 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 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Horn not working |1.7.3a| | 4 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 4 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 4 |
| Brake lever cannot be applied smoothly |3.1.3d| | 4 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Lower Motorcycle structure excessively corroded |6.1.1a| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Registration plate issues | 3 |
| Handlebar mounting clamp loose |2.1.1a| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front position lamp damaged and function impaired |1.1.1b| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Front position lamp insecure |1.1.1c| | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Centre Lower Motorcycle structure excessively corroded |6.1.1a| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Centre Front Lower Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Centre Motorcycle structure excessively corroded |6.1.1a| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 2 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Offside Front Indicator tell tale not functioning |1.5.2| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Rear suspension bush has excessive free play swinging arm front engine mount |2.4.A2a|i|| | 1 |
| Nearside Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Centre Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Brake lever cracked |3.1.2c| | 1 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Centre Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Centre Front Lower Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Upper Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Centre Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Brake hose excessively deteriorated | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Rear reflector on motorcycle dirty and function impaired |1.4.2a| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Vehicle identification number not legible |6.3.5a| | 1 |
| Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| An item not tested |Manual| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Offside Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake lever is inoperative |3.1.3c| | 1 |
| Rear Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Brake linkage excessively corroded |3.2.A1c| | 1 |
| Nearside Front Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Rear Roller brake test indicates a binding brake also no reserve travel |3.3.A1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Brake hose damaged | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (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 Brake hose leaking fluid |3.2.B4| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |
| Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Offside Brake lever is inoperative |3.1.3c| | 1 |
| Vehicle identification number not legible |6.3.5a| | 1 |
| Nearside Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Centre Front Upper Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 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 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock Throttle cable routing |2.1.4 |a|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 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 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Direction indicator damaged and function impaired |1.5.3a| | 1 |