| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 30 |
| Rear reflector on motorcycle missing |1.4.1| | 28 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 13 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Steering linkage has excessive free play |2.2.2| | 11 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Registration plate issues | 7 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Handlebar mounting clamp loose |2.1.1a| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Offside Rear Direction indicator not working |1.5.1c| | 5 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 5 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Horn not working |1.7.3a| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 3 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Rear Direction indicator insecure |1.5.3b| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Motorcycle structure excessively damaged |6.1.1a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Horn control defective |1.7.2a| | 2 |
| Rear Front mudguard insecure |2.3.7| | 2 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Indicator switch defective |1.5.4| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Upper Steering linkage has excessive free play |2.2.2| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Front Position lamp switch insecure |1.1.4b| | 1 |
| Offside Front Position lamp switch insecure |1.1.4b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Nearside Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Steering linkage has excessive free play |2.2.2| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| An item not tested |Manual| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Indicator tell tale not functioning |1.5.2| | 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 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake pedal cracked |3.1.2c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Steering linkage has excessive free play very stiff |2.2.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake component insecure rear brake lever perch insecure (1.1.21 (c)) | 1 |
| Steering operation impeded by a fairing handlebar cover excessively loose (2.1.4 (e)) | 1 |
| Engine mounting/bracket fractured |6.1.8 |a| |ii|| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Handlebar mounting clamp loose (2.1.1a) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Rear wheel bearings have excessive free play (2.4.A.2c) | 1 |
| Lower Steering linkage has excessive free play (2.2.2) | 1 |
| Horn not working (1.7.3a) | 1 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Offside Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear position lamp damaged and function impaired not working |1.1.1b| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Steering lock stop maladjusted |2.1.3| | 1 |
| Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Brake lever pivots excessively worn |3.1.3a| | 1 |
| Centre Front Lower Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Centre Rear Lower Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Brake lever excessively corroded |3.2.A1c| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp light intensity severely reduced no main or dip light intensity poor (4.1.4 (a)) | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Lower Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Vehicle identification number not legible |6.3.5a| | 1 |
| Nearside Rear Brake lever insecure |3.1.2a| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Rear Brake lever mounting insecure |3.1.2a| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Upper Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Centre Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Centre Front Steering linkage has excessive free play |2.2.2| | 1 |
| Centre Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Vehicle identification number not permanently displayed |6.3.5a| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies lever switch sticking |1.3.1a| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Horn replaced by a gong |1.7.3b| | 1 |