| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 37 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 7 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Rear Position lamp not working |4.2.1 |a|| | 6 |
| Rear Position lamp not working (4.2.1 (a)) | 6 |
| Front Position lamp not working (4.2.1 (a)) | 5 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Nearside Front Direction indicators not working |1.5.1c| | 4 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 4 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Registration plate issues | 4 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 4 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 4 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 4 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 4 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Front mudguard insecure |2.3.7| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 3 |
| Registration plate lamp issues | 3 |
| Offside Rear Footrest missing (6.2.12 (a)) | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front position lamp missing |1.1.1a| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Rear position lamp damaged and function impaired |1.1.1b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Headlamp insecure (4.1.1 (c)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Front Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake binding not able to push bike |3.3.A1a| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Clutch lever shortened so it cannot be readily operated. clutch bracket brocken |6.2.1g| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear switch |1.3.1a| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Drive chain sprocket worn to excess front and rear |6.2.1e| | 1 |
| Brake hose damaged | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Brake reaction bracket securing bolt|s| missing incorrect bolt |3.2.A1j| | 1 |
| Nearside Rear Lower Chain guard insecure Chainguard is missing |6.2.1c| | 1 |
| Offside Rear Lower Brake pedal has inadequate reserve travel Brake pedal fouls exhaust silencer |3.1.3b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride drive chain split link facing the wrong way. |6.2.1h| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Position lamp switch faulty head light pass button has spring missing so allowing the contacts to keep touching flashing the head light when the bike is in motion |1.1.4a| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride sprocket nuts loose |6.2.1h| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Horn not working |1.7.3a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Inner Indicator tell tale not functioning |1.5.2| | 1 |
| Outer Indicator tell tale not operating correctly |1.5.2| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Horn missing |1.7.1| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake pedal mounting cracked . |3.1.2c| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Stop lamp affected by the operation of another lamp rear position lamp and stop lamp working wrong way round |1.3.2| | 1 |
| Nearside Exhaust mounting missing |7.1.1c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Brake pedal insecure |1.1.2 |e| |i|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering Steering out |2.5.1| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Brake drum|s| insecure not attached to stay bar |3.2.A1g| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Rear Brake component insecure split pin missing from rear torque arm |1.1.21 |c|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Headlamp incorrect colour BLUE BULB FITTED |1.2.1| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen no pattern |1.6.B.1| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Brake pedal so insecure that the brake cannot be readily applied |1.1.2 |e| |ii|| | 1 |
| Brake pedal pivot excessively worn |1.1.1 |b|| | 1 |
| Front Brake lever insecure |1.1.2 |e| |i|| | 1 |
| Rear Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Nearside Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Offside Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Nearside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Offside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Rear All position lamps not working |4.2.1 |a|| | 1 |
| Throttle operating incorrectly loose |6.2.7 |a| |i|| | 1 |
| Offside Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Rear Brake component inadequately mounted brake arm locking devise missing |1.1.21 |c|| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Drive chain excessively tight, so that it is likely to fail |6.1.7 |k| |ii|| | 1 |
| Rear Drive chain sprocket so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Brake master cylinder leaking |1.1.10 |b| |ii|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Steering headbearing has excessive wear or free play steering top nut also loose |2.2.2 |f| |i|| | 1 |
| Brake pedal anti-slip provision loose |1.1.2 |c|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected switch gear loose and spinning on handlebar |6.2.7 |a| |ii|| | 1 |
| Drive chain excessively loose offside chain adjuster also loose |6.1.7 |c| |i|| | 1 |
| Rear Shock absorber insecurely attached both - top nuts missing |5.3.2 |a| |i|| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Brake performance not tested front wheel insecure and front brake master cylinder leaking fluid |1.2.1 |g|| | 1 |
| Steering lock stop ineffective lock stop bent allowing forks to interfere with fuel tank at right lock and limiting movement at left lock |2.1.3| | 1 |
| Headlamp lens seriously defective (4.1.1 (b) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Central Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Central Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Front Fuel pipe leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Rear Suspension attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Rear Position lamp not working New bulb fitted. (4.2.1 (a)) | 1 |
| Offside Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 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 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Offside Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure side stand cannot be secured in the upright position for riding safely (6.1.1 (b) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Brake clevis joint insecure Pin missing at pedal (1.1.15 (c)) | 1 |
| Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Rear Suspension arm corroded and seriously weakened (5.3.3 (b) (i)) | 1 |
| Front Brake excessively binding sevely binding on (1.2.1 (f)) | 1 |
| Rear Brake excessively binding severly binding on (1.2.1 (f)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Clutch lever positioned so it cannot be readily operated (6.2.7 (b)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Fuel system component leaking around carb area (6.1.3 (b) (i)) | 1 |
| All direction indicators incorrect colour (4.4.3 (a)) | 1 |
| Rear Motorcycle structure has a fracture which is likely to adversely affect braking or steering Swingarm (6.1.1 (a) (ii)) | 1 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Headlamp aim projected beam image obviously incorrect reflector fitted at an angle (4.1.2 (c)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Rear Wheel spindle locking device ineffective both side wheel adjust loose (5.2.1 (d)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Nearside Front Motorcycle structure is so deformed it is likely to adversely affect braking or steering (6.1.1 (a) (ii)) | 1 |
| Nearside Front Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |