| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 15 |
| Rear reflector missing (4.8.2 (a) (ii)) | 14 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 11 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 8 |
| Stop lamp not working (4.3.1 (a) (ii)) | 8 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 6 |
| Front Position lamp not working (4.2.1 (a)) | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 5 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 4 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 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 |
| Registration plate issues | 2 |
| Registration plate lamp issues | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Nearside Footrest insecure (6.2.12 (a)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Brake caliper leaking and braking performance affected (1.1.16 (b) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Central Front Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp aim not tested Not working (4.1.2 (b)) | 1 |
| Rear Drive chain excessively loose Rubbing on swingarm (6.1.7 (c) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Central Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Central Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Handlebar retaining device loose mouting bolt loose (2.2.1 (b) (i)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected THROTTLE STICKING (6.2.7 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen DIP BEAM (4.1.2 (a)) | 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 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Nearside Front Upper Horn not working (7.7 (a) (ii)) | 1 |
| Central Rear Upper Position lamp switch does not operate in accordance with the requirements (4.2.2 (a)) | 1 |
| Nearside Rear Lower Exhaust system insecure (6.1.2 (a)) | 1 |
| Front Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Shock absorber has a serious fluid leak Front both sides leaking onto brake discs (5.3.2 (b)) | 1 |
| Stop lamp likely to become detached (4.3.1 (c) (ii)) | 1 |
| Front Valve stem seriously damaged cracked (5.2.3 (j)) | 1 |
| Rear Valve stem seriously damaged cracked (5.2.3 (j)) | 1 |
| Drive chain so worn it is likely to fail very rusty and dry has tight links and obvious wear (6.1.7 (c) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel lever bottoms out before brake is fully applied (1.1.2 (a)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Brake excessively binding 20-25 KgF of resistance (1.2.1 (f)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Front Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Fuel tank leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Offside Front Footrest missing (6.2.12 (a)) | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Brake master cylinder insecure rear master cyl linkcage insecure (1.1.10 (c)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Exhaust system insecure (6.1.2 (a)) | 1 |
| Offside Footrest insecure (6.2.12 (a)) | 1 |
| Rear Brake component insecure brake pipe banjo loose rear calliper (1.1.21 (c)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Brake pedal has insufficient reserve travel no reserve & brake does not lock out in roller (1.1.2 (a)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Offside Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Suspension arm attachment bracket/mounting insecure swing arm nut loose (5.3.3 (a) (i)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Brake fluid reservoir fluid level significantly below minimum level lever (1.1.10 (d) (ii)) | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Central Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Central Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Brake fluid significantly below minimum mark Front brake spongy (1.1.10 (d) (ii)) | 1 |
| Nearside Front Brake hose excessively damaged Catching on cable tie (1.1.12 (b) (ii)) | 1 |
| Front All direction indicators incorrect colour both front showing white light (4.4.3 (a)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |