| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 62 |
| Headlamp aim out of alignment | 49 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 22 |
| Drive chain excessively loose |6.2.1d| | 21 |
| Registration plate issues | 19 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 18 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 16 |
| Drive chain worn to excess |6.2.1e| | 14 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 13 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 13 |
| Fuel cap sealing washer missing |7.2.2c| | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 11 |
| Horn not working |1.7.3a| | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 9 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Front wheel bearings are excessively rough |2.3.5b| | 8 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 7 |
| Handlebar deformed |2.1.1b| | 7 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 6 |
| Brake locking device missing |3.2.A1e| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| 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| | 5 |
| Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Direction indicators not working |1.5.1c| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 5 |
| Headlamp insecure |1.2.3b| | 4 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 4 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Brake locking device insecure |3.2.A1e| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Rear Direction indicator not working |1.5.1c| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Rear Brake locking device missing |3.2.A1e| | 3 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 3 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Rear Footrest missing |6.2.1a| | 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 Drive chain excessively loose |6.2.1d| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Centre Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Front Headlamp insecure |1.2.3b| | 2 |
| Rear Rear wheel insecure |4.2.3b| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Brake locking device missing |3.2.A1e| | 2 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Front Throttle operating incorrectly |6.2.1f| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Suspension arm attachment bracket/mounting likely to fail (5.3.3 (b) (ii)) | 2 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 2 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Offside Front Footrest missing |6.2.1a| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Central Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Front Brake cable has restricted free movement Lack of Reserve Travel. |1.1.15 |e|| | 1 |
| Fuel cap ineffective Vent hose missing also. |6.1.3 |b| |i|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Centre Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Offside Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Upper Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Horn sound not in accordance with requirements intermittently sounding.not audible enough |7.7 |c|| | 1 |
| All direction indicators not working partially illuminating and not flashing |4.4.1 |a| |ii|| | 1 |
| All direction indicators adversely affected by the operation of another lamp even less visible with headlamp on |4.4.3 |b|| | 1 |
| Headlamp aim not tested dip and main beam not bright enough to illuminate beam pattern tester |4.1.2 |b|| | 1 |
| Rear All position lamps light intensity significantly reduced |4.2.3 |a| |ii|| | 1 |
| Front All position lamps not working flickering on and off |4.2.1 |a|| | 1 |
| Steering headbearing excessively stiff or notchy notchy and stiff through turning radius |2.2.2 |f| |i|| | 1 |
| Stop lamp light intensity significantly reduced |4.3.3 |a| |ii|| | 1 |
| Rear Suspension component pin or bush excessively worn excess play lower rear suspension bushes |5.3.4 |a| |i|| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Nearside Rear Lower Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Lower Drive chain worn to excess |6.2.1e| | 1 |
| An item not tested |Manual| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Drive belt excessively loose. |6.2.1d| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear 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 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp affected by the operation of another lamp flashing when indicators operated with revs held high |1.3.2| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear wheel has a loose wheel bolt|s| |4.2.3a| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Offside Front Upper Throttle operating incorrectly |6.2.1f| | 1 |
| Central Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Central Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Front mudguard can easily contact any fixed point of the motor bicycle. |2.3.7| | 1 |
| Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Rear All direction indicators obviously incorrectly positioned Spacing (4.4.3 (a)) | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Lower Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Front Fuel cap sealing washer missing |7.2.2c| | 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 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake excessively binding Brake sticks on (1.2.1 (f)) | 1 |
| Rear Direction indicator obviously incorrectly positioned too close together, 180mm apart is required (4.4.3 (a)) | 1 |
| Front Stop lamp switch with a delay in operation front stop light only comes on if you brake hard, goes off again if you brake even harder (4.3.2 (a) (ii)) | 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 |
| Centre Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Centre Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Brake rod excessively damaged |3.2.A1c| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Centre Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Rear Wheel bearing has excessive play also cush drive bearing excessively loose (5.1.3 (a) (i)) | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Rear Brake linkage excessively worn (1.1.15 (b)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Engine mounting/bracket missing (6.1.8 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Offside Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Stop lamp not working front control (4.3.1 (a) (ii)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride SPLIT CLIP WRONG WAY |6.2.1h| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Offside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Fuel cap ineffective seal missing (6.1.3 (b) (i)) | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 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 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |