| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 60 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 30 |
| Registration plate lamp issues | 29 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 19 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 16 |
| Rear Brake excessively binding (1.2.1 (f)) | 15 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 12 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 12 |
| Rear reflector missing (4.8.2 (a) (ii)) | 11 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 11 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 9 |
| Stop lamp remains on when the brakes are released | 8 |
| Front Position lamp not working (4.2.1 (a)) | 7 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 7 |
| Horn not working (7.7 (a) (ii)) | 7 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 7 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 7 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 7 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 7 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 4 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 4 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 4 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 4 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 4 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 4 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 4 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 4 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 4 |
| Registration plate issues | 4 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 4 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 4 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 4 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Headlamp aim not tested (4.1.2 (b)) | 3 |
| Headlamp insecure (4.1.1 (c)) | 3 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 3 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 3 |
| Horn not working (7.7 (a)) | 3 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Position lamp not working (4.2.1 (a)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Rear Footrest missing (6.2.12 (a)) | 2 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Front Brake grabbing severely |1.2.1 |c|| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Chain guard insecure (6.1.7 (i)) | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 2 |
| Front Headlamp aim not tested (4.1.2 (b)) | 2 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 2 |
| Offside Footrest missing (6.2.12 (a)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Drive chain sprocket excessively loose locking tabs not bent into position (6.1.7 (c) (i)) | 1 |
| Rear Brake excessively binding centre stand fouling rear brake causing bind (1.2.1 (f)) | 1 |
| Fuel system component leaking Fuel tap (6.1.3 (b) (i)) | 1 |
| Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Nearside Front Indicator switch inoperative dry and sticky needs lubrication in switch (4.4.2 (a) (ii)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess Cush drive (6.1.7 (c) (i)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Chain guard insecure broken away from mount (6.1.7 (i)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Stop lamp not working foot control |4.3.1 |a| |ii|| | 1 |
| Nearside Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Exhaust system insecure (6.1.2 (a)) | 1 |
| Brake pedal is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Front Wheel alignment incorrect which adversely affects the steering front wheel and handle bars misaligned (2.4 (a)) | 1 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn Swing arm bush (5.3.4 (a) (i)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Offside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle sticking (6.2.7 (a) (ii)) | 1 |
| Nearside Front Direction indicator lens defective such that the emitted light is adversely affected (4.4.1 (b) (ii)) | 1 |
| Front Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Headlamp aim not tested Battery flat bike wont start (4.1.2 (b)) | 1 |
| Central Front Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Nearside Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Stop lamp not working switch (4.3.1 (a) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Fuel system component leaking FROM CARB DRAIN (6.1.3 (b) (i)) | 1 |
| All position lamps not working INNOP (4.2.1 (a)) | 1 |
| Throttle operating incorrectly ENGINE REVS HANGING TOO HIGH (6.2.7 (a) (i)) | 1 |
| Fuel system component leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Brake linkage has abnormal movement of levers indicating excessive wear or maladjustment |1.1.15 |f|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Suspension component pin or bush excessively worn swing arm main shaft bearing |5.3.4 |a| |i|| | 1 |
| Brake rod insecure (1.1.15 (c)) | 1 |
| Suspension component damaged and seriously weakened forks seriously bent (5.3.3 (b) (i)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Central Front All position lamps not working no position lights working on front (4.2.1 (a)) | 1 |
| Central Front Horn not working only works one in ten times button pressed (7.7 (a)) | 1 |
| Front Handlebar fouling on the fuel tank or bodywork on full lock Both directions contacts fuel tank, cannot check lock stops (2.1.4 (b)) | 1 |
| Nearside Chain guard insecure drive chain & front sprocket cover / foot protection cover missing, sited next to riders footrest (6.1.7 (i)) | 1 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Central Front Upper Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Central Rear Upper Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Stop lamp not working Foot Pedal (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Suspension component pin or bush excessively worn play in swing arm bearings (5.3.4 (a) (i)) | 1 |
| Front Brake cable insecure (1.1.15 (c)) | 1 |
| Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Drive chain sprocket excessively loose |6.1.7 |c| |i|| | 1 |
| Brake component insecure Torque arm split pin missing (1.1.21 (c)) | 1 |
| Nearside Rear Wheel spindle locking device ineffective Chain adjuster broken (5.2.1 (d)) | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Horn not working wire broken (7.7 (a)) | 1 |
| Front Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Rear Wheel fixing missing (single fixing) (5.2.1 (a) (ii)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Drive chain worn to excess CHAIN AND SPORCKET (6.1.7 (c) (i)) | 1 |
| Rear Footrest insecure FOOT PEG INSECURE (6.2.12 (a)) | 1 |
| Drive chain excessively tight chain has been adjusted to the right tension as it was too tight (6.1.7 (k) (i)) | 1 |
| Steering headbearing excessively stiff or notchy steering was too stiff as the headrace bearings were overtightened (2.2.2 (f) (i)) | 1 |
| Front Dipswitch does not operate immediately when selected on dipped beam Headlight HI/Low beams were operating around the wrong way ,low was high and hi was low.this has been rectified (4.1.3 (b)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear Footrest missing rear pillion pegs missing (6.2.12 (a)) | 1 |
| Rear Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition non standard exhaust (8.1.1 (a)) | 1 |
| Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Rear Brake lever excessively worn (1.1.15 (b)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Fork yoke insecure (2.2.2 (d) (i)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front brake switch appears to be inoperative (4.3.2 (a) (iii)) | 1 |
| Nearside Rear Drive chain worn to excess drive chain & sprockets worn (6.1.7 (c) (i)) | 1 |
| Brake clevis joint insecure LOCKING DEVICE MISSING |1.1.15 |c|| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Offside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Brake master cylinder leaking sight glass (1.1.10 (b) (ii)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Front Brake hose damaged and likely to fail (1.1.12 (a)) | 1 |
| Stop lamp not working when applying front brake (4.3.1 (a) (ii)) | 1 |
| Rear Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected idle to high (6.2.7 (a) (ii)) | 1 |
| Rear Brake linkage has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Front Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Stop lamp not working front leaver (4.3.1 (a) (ii)) | 1 |
| Suspension component has excessive wear or free play rear suspension swing arm has excessive play (5.3.3 (d)) | 1 |
| Offside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Offside Front Brake lever pivot excessively tight Brake lever pivot worn and corroded. (1.1.1 (a)) | 1 |
| Central Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Nearside Rear Lower Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Front Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Stop lamp not working on hand brake, (4.3.1 (a) (ii)) | 1 |
| Front Drive chain worn to excess cush drive. (6.1.7 (c) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling front and rear wheel alignment |2.4 |a|| | 1 |
| Wheel alignment incorrect which adversely affects the steering front wheel and handle bar alignment |2.4 |a|| | 1 |
| Stop lamp not working pedal (4.3.1 (a) (ii)) | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Stop lamp not working front application |4.3.1 |a| |ii|| | 1 |
| Stop lamp not working rear application |4.3.1 |a| |ii|| | 1 |
| Brake pedal has insufficient reserve travel Rear brake control. (1.1.2 (a)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Lower Fork yoke insecure bolts missing (2.2.2 (d) (i)) | 1 |
| Rear Drive chain sprocket excessively loose cushdrive bearing worn (6.1.7 (c) (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 disc contaminated |1.1.14 |b|| | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Suspension arm attachment bracket/mounting insecure Swingarm loose (5.3.3 (a) (i)) | 1 |
| Rear Brake pedal so insecure that the brake cannot be readily applied (1.1.2 (e) (ii)) | 1 |
| Rear Brake pedal pivot excessively worn (1.1.1 (b)) | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected headset bearings missing (2.2.2 (f) (ii)) | 1 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Offside Handlebar grip missing (2.2.1 (d) (i)) | 1 |
| Drive chain worn to excess chain rusty / solid (6.1.7 (c) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the steering forks out of alignment (2.4 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the handling frame bent - has had side impact on front downtube (2.4 (a)) | 1 |
| Front Brake lever so insecure that the brake cannot be readily applied front brake low efficiency and notchy (1.1.2 (e) (ii)) | 1 |
| Front Brake lagging in operation (1.2.1 (d)) | 1 |
| Steering operation restricted in free movement from lock to lock cables catching (2.1.4 (c)) | 1 |
| All position lamps not working front and rear not working (4.2.1 (a)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected pedal seized (1.1.2 (b) (ii)) | 1 |
| Position lamp not working lens missing / lamp broken (4.2.1 (a)) | 1 |
| Nearside Rear Direction indicator not working broken / not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Front Brake lever is bent and the brake cannot be readily applied front brake lever bent (1.1.2 (d)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Offside Front Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Front Upper Brake hose excessively twisted (1.1.12 (b) (ii)) | 1 |
| Brake pedal pivot has excessive free play (1.1.1 (b)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Upper Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Fuel cap ineffective Insecure (6.1.3 (b) (i)) | 1 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Upper Engine mounting/bracket missing bolt (6.1.8 (a) (ii)) | 1 |
| Rear Brake master cylinder reservoir cap missing (1.1.10 (e)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Front Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Rear Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Offside Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Stop lamp not working front brake lever (4.3.1 (a) (ii)) | 1 |
| Nearside Footrest missing (6.2.12 (a)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Rear Suspension arm pin or bush excessively worn swing arm bushes (5.3.4 (a) (i)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected excessive free play/wear (2.2.2 (f) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Rear reflector missing L Plate covering rear reflector |4.8.2 |a| |ii|| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Central Rear Rear reflector missing behind L Plate (4.8.2 (a) (ii)) | 1 |
| Offside Rear Wheel spindle locking device missing clip missing from brake reaction bracket (5.2.1 (d)) | 1 |
| Central Front Stop lamp not working light does not illuminate when front brake applied (4.3.1 (a) (ii)) | 1 |
| Central Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Nearside Front Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear All direction indicators missing (4.4.1 (a) (ii)) | 1 |