| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 19 |
| Rear Position lamp not working (4.2.1 (a)) | 9 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 9 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 8 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 7 |
| Registration plate lamp issues | 6 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 6 |
| Front Position lamp not working (4.2.1 (a)) | 6 |
| Stop lamp remains on when the brakes are released | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 6 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Rear Footrest missing (6.2.12 (a)) | 5 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 5 |
| Rear Position lamp not working |4.2.1 |a|| | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Front mudguard insecure |2.3.7| | 5 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 5 |
| Rear reflector missing |4.8.2 |a| |ii|| | 5 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 5 |
| Exhaust system insecure (6.1.2 (a)) | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Offside Rear Footrest missing |6.2.12 |a|| | 4 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 4 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Headlamp insecure (4.1.1 (c)) | 3 |
| Offside Rear Footrest missing (6.2.12 (a)) | 3 |
| Front Brake grabbing severely |1.2.1 |c|| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 2 |
| Headlamp insecure |4.1.1 |c|| | 2 |
| Exhaust system insecure |6.1.2 |a|| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Rear Brake grabbing severely |1.2.1 |c|| | 2 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 2 |
| Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Registration plate issues | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Rear Footrest missing |6.2.12 |a|| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Fuel tank leaking (6.1.3 (b) (i)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| 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 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Engine mounting/bracket missing Rear engine bolt missing (6.1.8 (a) (ii)) | 1 |
| Front Engine mounting/bracket bracket excessively loose Front engine mounting bracket bolt missing (6.1.8 (a) (ii)) | 1 |
| Offside Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Rear Footrest missing both |6.2.12 |a|| | 1 |
| Rear Stop lamp switch with a delay in operation brake pedal bent |4.3.2 |a| |ii|| | 1 |
| Rear Direction indicator missing |4.4.1 |a| |ii|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted 1 out of 2 split links has clip not seated in grooves (6.1.7 (j) (i)) | 1 |
| Rear All direction indicators obviously incorrectly positioned Fitted too close together (4.4.3 (a)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted 2 horseshoe clips on chain both fitted incorrectly (6.1.7 (j) (i)) | 1 |
| Rear Brake lagging in operation Cannot not be applied smoothly. |1.2.1 |d|| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure Side panels insecure. |6.1.1 |b| |i|| | 1 |
| Front Stop lamp not working lever |4.3.1 |a| |ii|| | 1 |
| Offside Handlebar excessively deformed |2.2.1 |c| |i|| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Suspension arm pin or bush excessively worn Swinging arm pivot has excessive movement |5.3.4 |a| |i|| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Brake component insecure REAR BRAKE ARM (1.1.21 (c)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Central Rear Suspension arm ball joint excessively worn Swing Arm Bushes Worn Out (5.3.4 (a) (i)) | 1 |
| Indicator switch insecure nearside switch unit insecure |1.5.4| | 1 |
| Front suspension fouling which affects the movement of the front suspension. L plate needs relocating |fouling fork movement| |2.3.6a| | 1 |
| Rear suspension bush has excessive free play swing arm has side to side movement |2.4.A2a|i|| | 1 |
| Offside Handlebar mounting clamp bolt loose offside handlebar loose |2.1.1a| | 1 |
| Brake pedal has inadequate reserve travel excessive travel |3.1.3b| | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Rear suspension bush excessively deteriorated swing arm bush |2.4.A2a|i|| | 1 |
| Rear Inner Footrest missing |6.2.1a| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Rear Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Front Brake fluid significantly below minimum mark |1.1.10 |d| |ii|| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Rear Shock absorber has negligible damping effect both shocks lack of damping (5.3.2 (b)) | 1 |
| Rear Suspension arm ball joint excessively worn play in swing arm bushes (5.3.4 (a) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride split link fitted incorrectly |6.2.1h| | 1 |
| Offside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride adjuster missing |6.2.1h| | 1 |
| Front position lamp does not illuminate immediately when switched on side light front |1.1.3a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired lens fitted incorrectly |1.2.3a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Brake component insecure no pin in rear brake torque arm (1.1.21 (c)) | 1 |
| Fork yoke insecure |2.2.2 |d| |i|| | 1 |
| Rear reflector missing behind L plate |4.8.2 |a| |ii|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Stop lamp switch with a delay in operation not working seized up (4.3.2 (a) (ii)) | 1 |
| Rear Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Drive chain excessively tight, so that it is likely to fail |6.1.7 |k| |ii|| | 1 |
| Engine mounting/bracket excessively loose |6.1.8 |a| |ii|| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Footrest missing pillion |6.2.1a| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Brake component is severely distorted |3.1.5| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Exhaust has a major leak of exhaust gases bracket (6.1.2 (a)) | 1 |
| Offside Rear Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Central Rear Lower Engine mounting/bracket excessively loose |6.1.8 |a| |ii|| | 1 |
| Fuel cap ineffective fuel cap not opening (6.1.3 (b) (i)) | 1 |
| Rear Suspension component pin or bush excessively worn swingarm bushes worn (5.3.4 (a) (i)) | 1 |
| Rear Stop lamp not working Rear brake pedal (4.3.1 (a) (ii)) | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Drive chain sprocket worn to excess x2 |6.1.7 |c| |i|| | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock screen bracket attached to bars hitting tank on full right lock |2.1.4 |b|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Nearside Handlebar mounting insecure |2.2.1 |a| |i|| | 1 |
| Front Wheel excessively distorted |5.2.2 |c| |i|| | 1 |
| Headlamp incorrect colour showing blue light |4.1.4 |a|| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Rear Brake back plate insecure brake plate to torque arm bolt loose,locking device missing |1.1.14 |d|| | 1 |
| Rear Drive chain sprocket excessively loose |6.1.7 |c| |i|| | 1 |
| Nearside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Suspension component pin or bush excessively worn swinging arm bush (5.3.4 (a) (i)) | 1 |
| Nearside Rear Lower Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Rear Lower Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Rear Lower Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Lower Footrest missing (6.2.12 (a)) | 1 |
| Nearside Rear Lower Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear reflector defective or damaged by more than 50% of the reflecting surface |4.8.1 |a| |ii|| | 1 |
| Stop lamp not working front lever |4.3.1 |a| |ii|| | 1 |
| Rear suspension bush has excessive free play swinging arm pivot |2.4.A2a|i|| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies both brakes |1.3.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced swingarm corrosion |6.1.1 |c| |i|| | 1 |
| Rear Suspension arm corroded and seriously weakened (5.3.3 (b) (i)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Offside Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls switch inop (4.3.2 (a) (iii)) | 1 |
| Rear suspension bush has excessive free play swinging arm |2.4.A2a|i|| | 1 |
| Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Wheel more than one fixing loose |5.2.1 |a| |ii|| | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Stop lamp does not illuminate immediately a brake applies Rear stop lamp |1.3.1a| | 1 |
| All direction indicators missing |4.4.1 |a| |ii|| | 1 |
| Suspension arm corroded and seriously weakened swing arm (5.3.3 (b) (i)) | 1 |
| Central Rear Lower Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Central Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Central Rear Lower Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Front Wheel damaged or distorted to the extent that control of the motorcycle is likely to be adversely affected |5.2.2 |c| |ii|| | 1 |
| Offside Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| All direction indicators not working Hazards inop |4.4.1 |a| |ii|| | 1 |
| Suspension arm ball joint excessively worn swing arm |5.3.4 |a| |i|| | 1 |
| Footrest insecure Pin missing |6.2.12 |a|| | 1 |
| Headlamp light intensity severely reduced Dip beam (4.1.4 (a)) | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Dipswitch does not operate immediately when selected on dipped beam switch is inoperative (4.1.3 (b)) | 1 |
| Front Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Offside Rear Exhaust silencer insecure mounting is not bolted to support (8.1.1 (b) (i)) | 1 |
| Front Headlamp light intensity severely reduced headlamp has a mesh sticker on its lens (4.1.4 (a)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Lower Engine mounting/bracket bracket excessively loose |6.1.8 |a| |ii|| | 1 |
| Front Brake hose excessively twisted (1.1.12 (b) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Clutch lever bent so it cannot be readily operated |6.2.7 |b|| | 1 |
| Indicator switch inoperative |4.4.2 |a| |ii|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Rear Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 1 |
| Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Stop lamp not working front and rear |4.3.1 |a| |ii|| | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Footrest insecure (6.2.12 (a)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Fuel tank insecure tank not located correctly to front mountings (6.1.3 (a) (i)) | 1 |
| Stop lamp not working with rear brake applied (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Footrest insecure |6.2.12 |a|| | 1 |
| Nearside Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Stop lamp not working front brake lever switch |4.3.1 |a| |ii|| | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Footrest missing both rear pillion |6.2.12 |a|| | 1 |
| Front mudguard insecure bracket |2.3.7| | 1 |
| Rear suspension bearing has excessive free play swing arm |2.4.A2a|i|| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Suspension arm pin or bush excessively worn swing arm |5.3.4 |a| |i|| | 1 |
| Fuel tank leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Suspension arm corroded and seriously weakened swinging arm (5.3.3 (b) (i)) | 1 |
| Nearside Rear Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Brake clevis joint insecure (1.1.15 (c)) | 1 |
| Rear suspension bush has excessive free play swing arm bushes worn |2.4.A2a|i|| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Front Steering operation restricted in free movement from lock to lock stiff |2.1.4 |c|| | 1 |
| Rear reflector missing obscured by l plate |4.8.2 |a| |ii|| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Rear suspension bush has excessive free play Swing arm bushes |2.4.A2a|i|| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Direction indicator light intensity significantly reduced |4.4.3 |a|| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Rear Brake lagging in operation |1.2.1 |d|| | 1 |
| Stop lamp not working foot pedal (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp likely to become detached (4.2.1 (c) (ii)) | 1 |
| Nearside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Offside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |