| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 46 |
| Horn not working |1.7.3a| | 18 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 13 |
| Registration plate issues | 13 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 9 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 7 |
| 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 Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Handlebar deformed |2.1.1b| | 5 |
| Headlamp insecure |1.2.3b| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 5 |
| Offside Rear Direction indicator not working |1.5.1c| | 5 |
| Rear Brake locking device missing |3.2.A1e| | 5 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Offside Direction indicator not working |1.5.1c| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 3 |
| Indicator switch defective |1.5.4| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Front mudguard insecure |2.3.7| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Front Footrest insecure |6.2.1a| | 2 |
| Front Brake cable has a significantly damaged outer casing. |3.2.A1b| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Front Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Direction indicator missing |1.5.1a| | 2 |
| Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Registration plate lamp issues | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Nearside Direction indicator not working |1.5.1c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| 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| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose no ny-lock fitted |3.2.A1j| | 1 |
| Rear Brake component is excessively corroded Brake arm seized |3.1.5| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies Switch needs changing |1.3.1a| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Brake component insecure (1.1.21 (c)) | 1 |
| Rear Brake component insecure (1.1.21 (c)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Centre Front Front mudguard insecure |2.3.7| | 1 |
| Centre Rear Riders seat insecure |6.2.1a| | 1 |
| Offside Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Rear Upper Brake reaction bracket insecure |3.2.A1j| | 1 |
| Offside Rear Brake rod excessively chafed |3.2.A1a| | 1 |
| Centre Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Centre Rear Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Upper Front position lamp does not face the front |1.1.1d| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Chain guard insecure |6.2.1c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Stop lamp adversely affected by the operation of another lamp |4.3.3 |b|| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Offside All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied kick start in the way |3.1.3c| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Shock absorber has negligible damping effect forks (5.3.2 (b)) | 1 |
| Drive chain worn to excess cush drive (6.1.7 (c) (i)) | 1 |
| Rear Lower Engine mounting/bracket bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Front Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Rear Brake component inadequately mounted fouling exhaust mounting (1.1.21 (c)) | 1 |
| Rear Upper Engine mounting/bracket missing Bolt (6.1.8 (a) (ii)) | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake rod insecure |1.1.15 |c|| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 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 |
| Brake lever mounting insecure |3.1.2a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear suspension bush has excessive free play swing arm |2.4.A2a|i|| | 1 |
| Front shock absorber seal failed and leaking oil both forks |2.3.3| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component steering head bearings |2.3.4| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| An item not tested |Manual| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake excessively binding Brake stays on when released (1.2.1 (f)) | 1 |
| Rear Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition No end can or silencer (8.1.1 (a)) | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Wheel spoke excessively corroded |4.2.1b| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Wheel spoke excessively bent |4.2.1b| | 1 |
| Centre Front position lamp missing |1.1.1a| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 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 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride split pin missing in torque arm |6.2.1h| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Front Brake lever mounting cracked |3.1.2c| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Front Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Upper Fork yoke deformed |2.1.1b| | 1 |
| Rear Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake rod excessively corroded |3.2.A1c| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Brake component worn and seriously reduced in strength rear brake torque arm |3.2.A1| | 1 |
| Front Brake lever insecure |1.1.2 |e| |i|| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Brake pedal has inadequate reserve travel excessive pedal travel |3.1.3b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Position lamp switch does not operate in accordance with the requirements (4.2.2 (a)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Headlamp main beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Offside Front Brake lever excessively corroded |3.2.A1c| | 1 |
| Drive chain so worn it is likely to fail Outer link plate split (6.1.7 (c) (ii)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Nearside Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Brake lever pivots excessively worn |3.1.3a| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Direction indicators not working ALL |1.5.1c| | 1 |
| All position lamps do not illuminate immediately when switched on FRONT AND REAR NOT WORKING |1.1.3a| | 1 |
| Rear position lamp missing NUMBER PLATE LIGHT |1.1.1a| | 1 |
| Roller brake test indicates a sticking brake AFTER WHEN REAR BRAKE IS APPLIED |3.3.A1a| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded cable not mooving freely |3.2.A1h| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Front mudguard can easily contact the wheel |2.3.7| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Nearside Rear Upper Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear Upper Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |