| Most common failures | No# failures |
|---|
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 53 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 38 |
| Headlamp aim out of alignment | 38 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 34 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 25 |
| Registration plate issues | 23 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 20 |
| Steering headbearing has excessive free play |2.2.2| | 19 |
| Horn not working |1.7.3a| | 18 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 17 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 15 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 15 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 14 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 13 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 11 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 11 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 10 |
| Riders seat insecure |6.2.1a| | 10 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 9 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 9 |
| Stop lamp remains on when the brake is released |1.3.1e| | 9 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 8 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 7 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 7 |
| Headlamp insecure |1.2.3b| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 6 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front Steering headbearing has excessive free play |2.2.2| | 6 |
| Direction indicators not working |1.5.1c| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 5 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 5 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 5 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 4 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 4 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Front position lamp incorrect colour |1.1.2a| | 4 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 4 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 3 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Front mudguard insecure |2.3.7| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 3 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Indicator tell tale not functioning |1.5.2| | 3 |
| Horn is not a constant note |1.7.3c| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear position lamp incorrect colour |1.1.2b| | 2 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Headlamp insecure |1.2.3b| | 2 |
| Front Direction indicator deteriorated and function impaired |1.5.3a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 2 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 2 |
| Nearside Motorcycle structure excessively damaged |6.1.1a| | 2 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake lever insecure |3.1.2a| | 2 |
| Brake performance not tested |3.3| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 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 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Rear Brake master cylinder severely damaged |3.2.B1b| | 1 |
| Rear Indicator tell tale not functioning |1.5.2| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Offside Front Headlamp switch insecure |1.2.4| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Front Upper Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Upper Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Front Upper Handlebar deformed |2.1.1b| | 1 |
| Centre Front Upper Fork yoke deformed |2.1.1b| | 1 |
| Outer Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Outer Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Centre Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Centre Front Upper All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Front Upper All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Centre Rear Lower Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Centre Front Upper Horn not working |1.7.3a| | 1 |
| Outer Front Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Front Horn replaced by a siren |1.7.3b| | 1 |
| Offside Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Outer Upper Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Centre Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake cable badly frayed |3.2.A1b| | 1 |
| Rear Brake linkage excessively damaged |3.2.A1c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Offside Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Steering linkage has excessive free play |2.2.2| | 1 |
| Centre Front Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Horn missing |1.7.1| | 1 |
| Rear Rear position lamp incorrect colour |1.1.2b| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| An item not tested |Manual| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Front Steering movement excessively rough 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 |
| Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on not working |1.1.3a| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Upper Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Lower Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp not working |1.2.1b| | 1 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Service brake: efficiency below requirements |3.7.B.7| | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Offside Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Nearside Front Brake lever insecure |3.1.2a| | 1 |
| Offside Front Brake lever insecure |3.1.2a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Nearside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Headlamp switch faulty |1.2.4| | 1 |
| Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 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 |
| Nearside Front Upper Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Rear Upper Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Offside Lower An item not tested |Manual| | 1 |
| Nearside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Upper Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Front Upper Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Lower Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Rear mono-shock insecure |2.4.B.4| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Stop lamp flickers when tapped lightly by hand |1.3.1d| | 1 |
| Rear Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Upper Direction indicators not working |1.5.1c| | 1 |
| Offside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Upper Direction indicators not working |1.5.1c| | 1 |
| Centre Front Upper Indicator tell tale not functioning |1.5.2| | 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 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Centre Front Upper Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Registration plate lamp issues | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Exhaust is leaking and excessively noisey (7.1.1b) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort (3.3.A1c) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |