| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 53 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 19 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 13 |
| Rear Position lamp not working (4.2.1 (a)) | 11 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 10 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 10 |
| Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 8 |
| Stop lamp not working (4.3.1 (a) (ii)) | 7 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 6 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 6 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 5 |
| Front Position lamp not working (4.2.1 (a)) | 5 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Registration plate issues | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Registration plate lamp issues | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Rear Brake grabbing severely (1.2.1 (c)) | 4 |
| Riders seat insecure (6.2.5 (a) (ii)) | 4 |
| All direction indicators not working (4.4.1 (a) (ii)) | 4 |
| Rear Position lamp not working |4.2.1 |a|| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Offside Rear Footrest missing (6.2.12 (a)) | 3 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 3 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Rear Footrest missing (6.2.12 (a)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Front Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 2 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Suspension component pin or bush excessively worn swinging arm pivot bushes (5.3.4 (a) (i)) | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Rear Wheel spoke missing (5.2.2 (d)) | 2 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 2 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp not working with rear brake control (4.3.1 (a) (ii)) | 1 |
| Suspension arm pin or bush excessively worn swinging arm pivot (5.3.4 (a) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort Front brake disc bent (1.2.1 (e)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Stop lamp switch with a delay in operation FOOT PEDAL (4.3.2 (a) (ii)) | 1 |
| Headlamp aim not tested no electrics (4.1.2 (b)) | 1 |
| Stop lamp light intensity significantly reduced (4.3.3 (a) (ii)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Brake master cylinder defective but brake still operating dangerous to use |1.1.10 |b| |i|| | 1 |
| Rear Brake lining|s| less than 1.0 mm thick rear brake linings worn excess lever movement |1.1.13 |a|| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Wheel alignment incorrect which adversely affects the steering Front fork legs twisted in yokes. Re-aligned. (2.4 (a)) | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected loose on bars (6.2.7 (a) (ii)) | 1 |
| Rear Footrest missing both (6.2.12 (a)) | 1 |
| Front Brake master cylinder leaking Leaking through sight glass (1.1.10 (b) (ii)) | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Front Brake disc significantly and obviously worn Distorted (1.1.14 (a) (i)) | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 1 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Stop lamp switch with a delay in operation Front brake Switch faulty / corrosion PRS (4.3.2 (a) (ii)) | 1 |
| Stop lamp not working foot brake |4.3.1 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Front Steering headbearing excessively stiff or notchy Both stiff and notchy |2.2.2 |f| |i|| | 1 |
| Rear Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Stop lamp not working Mostly not working |4.3.1 |a| |ii|| | 1 |
| Rear Suspension arm ball joint excessively worn Swingarm has free play in bushes |5.3.4 |a| |i|| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Central Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Front Brake grabbing severely Break disc distorted (1.2.1 (c)) | 1 |
| Headlamp lens seriously defective Wrong headlight bulb (4.1.1 (b) (ii)) | 1 |
| Front Steering headbearing has excessive wear or free play Steering head bearing (2.2.2 (f) (i)) | 1 |
| Front Upper Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Steering operation restricted in free movement from lock to lock Horn (2.1.4 (c)) | 1 |
| Rear Exhaust system insecure (6.1.2 (a)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling frame bent (2.4 (a)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 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 |
| Throttle operating incorrectly Throttle sticking (6.2.7 (a) (i)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Suspension arm attachment bracket/mounting insecure |5.3.3 |a| |i|| | 1 |
| Rear Brake component insecure |1.1.21 |c|| | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Offside Rear Wheel spoke cracked (5.2.2 (d)) | 1 |
| Offside Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Rear Suspension arm ball joint excessively worn swinging arm (5.3.4 (a) (i)) | 1 |
| Offside Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Brake master cylinder defective but brake still operating Brake Master Cylinder Glass Broken (1.1.10 (b) (i)) | 1 |
| Offside Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Nearside Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Front Position lamp not working side light (4.2.1 (a)) | 1 |
| Nearside Riders seat insecure bolt missing (6.2.5 (a) (ii)) | 1 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Handlebar excessively deformed |2.2.1 |c| |i|| | 1 |
| Footrest missing both rear |6.2.12 |a|| | 1 |
| Rear Chain guard insecure broken at rear mounting point (6.1.7 (i)) | 1 |
| Nearside Front Brake hose excessively stretched |1.1.12 |b| |ii|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Rear Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Stop lamp not working from front brake (4.3.1 (a) (ii)) | 1 |
| Shock absorber likely to become detached rear near side top nut missing (5.3.2 (a) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel no front brake (1.1.2 (a)) | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Front Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Wheel bearing rough when rotated And play (5.1.3 (b) (i)) | 1 |
| Nearside Rear Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 1 |
| Offside Rear Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 1 |
| Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Front Upper Position lamp switch does not operate in accordance with the requirements (4.2.2 (a)) | 1 |
| Nearside Front Handlebar mounting insecure switch assembly (2.2.1 (a) (i)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Steering component deformed steering head bearings tight and knotchy when turning (2.1.3 (c) (i)) | 1 |
| Headlamp aim projected beam image is obviously incorrect LED bulb causing no dip beam pattern (4.1.2 (c)) | 1 |
| Front Stop lamp not working control |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working control |4.3.1 |a| |ii|| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Front Position lamp not working no low beam (4.2.1 (a)) | 1 |
| Rear Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Offside Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Nearside Footrest missing (6.2.12 (a)) | 1 |
| Handlebar restricted in free movement from lock to lock clutch cable fouling (2.1.4 (c)) | 1 |
| Suspension component ball joint excessively worn swingarm play |5.3.4 |a| |i|| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock Fuel tank (2.1.4 (b)) | 1 |
| Direction indicator not working R/H front (4.4.1 (a) (ii)) | 1 |
| Rear Wheel spoke cracked Three spokes in rear wheel (5.2.2 (d)) | 1 |
| Nearside Front Upper Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Central Front Headlamp insecure adjustment screw missing (4.1.1 (c)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Fuel hose damaged (6.1.3 (c) (ii)) | 1 |
| Fuel hose leaking (6.1.3 (b) (i)) | 1 |
| Throttle operating incorrectly loose (6.2.7 (a) (i)) | 1 |
| Handlebar deformed to the extent that steering is affected |2.2.1 |c| |ii|| | 1 |
| Rear Wheel spoke cracked two spokes broken (5.2.2 (d)) | 1 |
| Central Rear Wheel corroded to the extent that the wheel could break up spokes brocken rebuilt wheel (5.2.2 (c) (ii)) | 1 |
| Nearside Rear Wheel fixing missing (multiple fixings) adjuster brocken (5.2.1 (a) (i)) | 1 |
| Footrest missing Pillion (6.2.12 (a)) | 1 |
| Brake indicates excessive fluctuation of brake effort Front (1.2.1 (e)) | 1 |
| Front Upper Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| All direction indicators adversely affected by the operation of another lamp not flashing (4.4.3 (b)) | 1 |
| Rear Wheel spoke excessively loose Spoke broken (5.2.2 (d)) | 1 |
| Wheel spoke missing 2 rear spokes snapped (5.2.2 (d)) | 1 |
| Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls rear brake pedal switch (4.3.2 (a) (iii)) | 1 |
| Position lamp switch does not operate in accordance with the requirements pass switch inoperative (4.2.2 (a)) | 1 |
| Brake lever has restricted free movement cannot be applied smoothly (1.1.15 (e)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Central Front Brake excessively binding (1.2.1 (f)) | 1 |
| Central Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Central Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Central Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Central Rear Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Offside Front Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Central Rear Footrest missing (6.2.12 (a)) | 1 |
| Central Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Sidecar wheel alignment has excessive toe-out |2.4 |b|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle unit loose (6.2.7 (a) (ii)) | 1 |
| Stop lamp not working front lever switch (4.3.1 (a) (ii)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Brake reaction bracket excessively worn toque arm bar loose and worn (1.1.15 (b)) | 1 |
| Rear Brake back plate insecure bolt loose split pin missing (1.1.14 (d)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |