| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 47 |
| Rear reflector on motorcycle missing |1.4.1| | 22 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Registration plate issues | 17 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 16 |
| Registration plate lamp issues | 13 |
| Drive chain excessively loose |6.2.1d| | 13 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 9 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 8 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Drive chain excessively tight |6.2.1d| | 8 |
| Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Stop lamp remains on when the brakes are released | 6 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Rear Brake excessively binding (1.2.1 (f)) | 5 |
| Front Brake disc|s| cracked |3.2.A1g| | 4 |
| Rear Brake disc|s| cracked |3.2.A1g| | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 4 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 3 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Rear suspension component seized |2.4A2a|ii|| | 3 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| 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| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Rear Suspension component modified so the suspension is inoperative (5.3.3 (c) (ii)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Brake hose excessively twisted |3.2.B3a| | 2 |
| Front Brake disc fractured (1.1.14 (a) (ii)) | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Nearside Handlebar deformed |2.1.1b| | 2 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 2 |
| Headlamp incorrect colour |4.1.4 |a|| | 1 |
| Exhaust silencer insecure |8.1.1 |b| |i|| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Offside Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Offside Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear wheel spindle securing nut locking device missing Split pin missing |2.4.A.2b| | 1 |
| Shock absorber has negligible damping effect Rear |5.3.2 |b|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Offside Rear Brake pedal mounting insecure foot peg / brake lever |3.1.2a| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Wheel spindle loose not split pinned (5.2.1 (c) (i)) | 1 |
| Rear Brake caliper inadequately mounted |1.1.16 |c| |i|| | 1 |
| Offside Rear Lower Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Front Brake fluid significantly below minimum mark |1.1.10 |d| |ii|| | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 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 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Stop lamp not working Rear control |4.3.1 |a| |ii|| | 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 |
| Shock absorber has negligible damping effect Linkages possibly seized also |5.3.2 |b|| | 1 |
| Offside Rear Motorcycle structure joining/attachment plate or fastening insecure Chain adjuster plate |6.1.1 |b| |i|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted wrong way round (6.1.7 (j) (i)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Suspension component insecure and control of the motorcycle impaired |5.3.3 |a| |ii|| | 1 |
| Offside Front Footrest insecure |6.2.12 |a|| | 1 |
| Nearside Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Rear Lower Shock absorber likely to become detached Bolt loose and nut missing (5.3.2 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Floor brake test indicates a severely juddering brake pulsing pedal |3.3C2d.| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Direction indicators not working indicator not working |1.5.1c| | 1 |
| Front Front shock absorber seal failed and leaking oil both fork seals leaking badly |2.3.3| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Rear Outer Footrest insecure (6.2.1a) | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 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 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Suspension component mounting modified so the suspension is inoperative (5.3.3 (c) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect component/bush/pivot seizing causing rear suspension to lock down & not return (5.3.2 (b)) | 1 |
| Rear Brake hose excessively twisted rear calliper incorrectly fitted (1.1.12 (b) (ii)) | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Stop lamp not working for rear brake (4.3.1 (a) (ii)) | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Lower Motorcycle structure is fractured and structural rigidity is significantly reduced fairing (6.1.1 (a) (i)) | 1 |
| Nearside Rear Upper Motorcycle structure is fractured and structural rigidity is significantly reduced fairing (6.1.1 (a) (i)) | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Nearside Handlebar deformed bent and can traping fingers |2.1.1b| | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Footrest missing both rears (6.2.12 (a)) | 1 |
| Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride locking split link clip missing |6.2.1h| | 1 |
| Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Fuel cap ineffective not sealing (6.1.3 (b) (i)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Upper Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear Shock absorber has an excessively worn bush lower / rear bush x/s play (5.3.2 (c)) | 1 |
| Central Rear Lower Rear reflector likely to become detached |4.8.1 |b| |ii|| | 1 |
| Offside Front Stop lamp not working Stop lamp not working when hand lever applied (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working when hand lever applied |4.3.1 |a| |ii|| | 1 |
| Rear Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Shock absorber has negligible damping effect REAR SUSPENSION NOT MOVING FREELY AND DOES NOT RETURN WHEN COMPRESSED (5.3.2 (b)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Central Rear Rear shock absorber has inadequate damping effect. no rebound |2.4.A.3b| | 1 |
| Central Rear Stop lamp does not illuminate immediately a brake applies no rear brake light from pedal |1.3.1a| | 1 |
| Drive chain so worn it is likely to fail chain excessively corroded and has seized links (6.1.7 (c) (ii)) | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies Feront brake light switch appears inoperative |1.3.1a| | 1 |
| Drive chain excessively loose chain in poor condition many stiff links (6.1.7 (c) (i)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Rear Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition Baffle missing (8.1.1 (a)) | 1 |
| Front Brake disc significantly and obviously worn Disk warped (1.1.14 (a) (i)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Horn not working |1.7.3a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Central Front Shock absorber has a serious fluid leak FORK SEALS EXCESSIVELY LEAKING. (5.3.2 (b)) | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Brake hose excessively twisted (1.1.12 (b) (ii)) | 1 |
| Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Fuel cap mounting flange/sealing method defective Unable to open fuel cap. |7.2.2c| | 1 |
| Stop lamp not working rear operated |4.3.1 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Rear suspension component loose |2.4.A.1a| | 1 |
| Lower Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |