| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 6 |
| Registration plate lamp issues | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Registration plate issues | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Handlebar deformed |2.1.1b| | 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|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride split link |6.2.1h| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket |6.2.1h| | 1 |
| Direction indicators not working indicator switch faulty |1.5.1c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear control |1.3.1a| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Offside Footrest insecure riders |6.2.12 |a|| | 1 |
| Brake pedal insecure |1.1.2 |e| |i|| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Brake pedal anti-slip provision missing |1.1.2 |c|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Headlamp aim headlamp damaged and function impaired dip beam bulb not working |1.2.3a| | 1 |
| Direction indicator not working all |1.5.1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Lower Motorcycle structure cracked engine mount |6.1.1a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Chain guard insecure |6.1.7 |i|| | 1 |
| Brake hose excessively deteriorated | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Horn not working |1.7.3a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Nearside Front Brake lever insecure rear brake control and switch gear not
fixed correctly |3.1.2a| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Suspension arm attachment bracket/mounting insecure |5.3.3 |a| |i|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Rear suspension bush has excessive free play swinging arm |2.4.A2a|i|| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Upper Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Direction indicator not working L/H/R |4.4.1 |a| |ii|| | 1 |
| Footrest missing Rear |6.2.1a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock |2.1.4 |a|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Exhaust has a major leak of exhaust gases manifold |6.1.2 |a|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Headlamp aim not tested Headlamp not working. |1.6| | 1 |
| Headlamp insecure Front fairing broken at mounts. |1.2.3b| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear suspension bush has excessive free play Swinging arm pivot. |2.4.A2a|i|| | 1 |
| Motorcycle structure excessively distorted Riders offside footrest bent. |6.1.1a| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Central Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Steering linkage ball joint has excessive play |2.1.3 |b| |i|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Brake cylinder severely damaged Glass cracked |3.2.B1b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Brake pedal is damaged and the brake cannot be readily applied deformed and too close to footpeg |3.1.3c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear shock absorber has inadequate damping effect. both rear shocks have no damping |2.4.A.3b| | 1 |
| Front position lamp does not illuminate immediately when switched on not working |1.1.3a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired no image on dip or main beam |1.2.3a| | 1 |
| Nearside Rear Brake lever insecure |3.1.2a| | 1 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Wheel alignment incorrect which adversely affects the handling chain adjuster damaged. unable to adjust wheel alignment. |2.4 |a|| | 1 |
| Offside Front Direction indicator damaged and function impaired lense broken |1.5.3a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Direction indicator not working both |1.5.1c| | 1 |
| Rear Exhaust mounting missing rear exhaust mount missing mount replaced |7.1.1c| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Central Front Upper Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Central Front Upper Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure front fairing (6.1.1 (b) (i)) | 1 |
| Front Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Rear Brake lagging in operation Brake Remains on after lever released (1.2.1 (d)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Central Front Lower Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Stop lamp not working front and rear not working (4.3.1 (a) (ii)) | 1 |
| Front Handlebar grip insecure to handlebar complete throttle case turns (2.2.1 (d) (ii)) | 1 |
| Offside Rear Footrest insecure rear foot peg holder broke rh (6.2.12 (a)) | 1 |
| Front Brake lever so insecure that the brake cannot be readily applied (1.1.2 (e) (ii)) | 1 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Central Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Central Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Central Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Drive chain so loose it is likely to fail lifting off sprockets on rotation . (6.1.7 (c) (ii)) | 1 |
| Rear Chain guard insecure (6.1.7 (i)) | 1 |
| Rear Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Brake lever has insufficient reserve travel brake (1.1.2 (a)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Brake hose damaged and likely to fail SPLIT (1.1.12 (a)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected THROTTLE INCREASES WHEN BARS ARE TURNED TO THE RIGHT (6.2.7 (a) (ii)) | 1 |
| Rear Suspension component pin or bush excessively worn SWINGARM MOVING SIDE TO SIDE (5.3.4 (a) (i)) | 1 |
| Rear Wheel bearing has excessive play SPROCKET CARRIER (5.1.3 (a) (i)) | 1 |
| Headlamp aim projected beam image obviously incorrect Both beams on together (4.1.2 (c)) | 1 |
| Front Brake disc contaminated With paint (1.1.14 (b)) | 1 |
| Brake clevis joint insecure Rear torque arm split pin missing (1.1.15 (c)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Steering movement excessively stiff with the wheel raised (2.2.1b) | 1 |
| Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Brake hose bulging under pressure (1.1.12 (d)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake excessively binding stuck on (1.2.1 (f)) | 1 |
| Rear Valve stem seriously misaligned (5.2.3 (j)) | 1 |