| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 48 |
| Steering headbearing has excessive free play |2.2.2| | 35 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 25 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 23 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 15 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Registration plate issues | 11 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 10 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 9 |
| Horn not working |1.7.3a| | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Front Steering headbearing has excessive free play |2.2.2| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 6 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| An item not tested |Manual| | 5 |
| Direction indicators not working |1.5.1c| | 5 |
| Exhaust excessively deteriorated |7.1.1a| | 5 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 4 |
| Handlebar mounting clamp loose |2.1.1a| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Direction indicator not working |1.5.1c| | 4 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear reflector on motorcycle obscured |1.4.1| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Offside Steering lock stop missing |2.1.3| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Steering linkage has excessive free play |2.2.2| | 2 |
| Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Front suspension assembly component excessively misaligned |2.3.1| | 2 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Brake locking device insecure |3.2.A1e| | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Front Fork yoke deformed |2.1.1b| | 2 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Central Lower Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking Broken center stand/pin component tied up temporary repair. |6.1.1c| | 1 |
| Centre Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Fuel tank leaking From sender unit. |7.2.1a| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Front Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Brake lagging in operation (1.2.1 (d)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Leg shield insecure and likely to impede the steering |2.1.2e| | 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 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front All position lamps not working |4.2.1 |a|| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Wheel alignment incorrect which adversely affects the steering Handlebars continue to move once full lock achieved causing steering to be misaligned |2.5.1| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Fuel pipe leaking |6.1.3 |b| |i|| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Fork yoke in such a condition that steering control is adversely affected (2.2.2 (d) (ii)) | 1 |
| Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Fork yoke insecure (2.2.2 (d) (i)) | 1 |
| Front Forks in such a condition that steering control is adversely affected (2.2.2 (d) (ii)) | 1 |
| Front Forks excessively deformed (2.2.2 (d) (i)) | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Centre Headlamp insecure |1.2.3b| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Rear Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Position lamp switch insecure (4.2.2 (b)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Direction indicators flashing less than 60 times a minute BATTERY FLAT |1.5.1c| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Forks excessively corroded Upper fork brace (2.2.2 (d) (i)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Brake cable badly frayed |3.2.A1b| | 1 |
| Front Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 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 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Offside Motorcycle structure excessively damaged |6.1.1a| | 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 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Centre Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Upper Indicator switch insecure |1.5.4| | 1 |
| Centre Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Outer Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Upper Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Offside Rear Lower Exhaust excessively deteriorated |7.1.1a| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Brake component is excessively corroded |3.1.5| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Nearside Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Rear Brake cable has a significantly damaged outer casing. |3.2.A1b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Brake lever mounting insecure |3.1.2a| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Nearside Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Centre Front Lower Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Nearside Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 1 |