| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 12 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Rear reflector missing |4.8.2 |a| |ii|| | 5 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 3 |
| Registration plate lamp issues | 3 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 2 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 2 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear Footrest missing |6.2.1a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Clutch lever shortened so it cannot be readily operated |6.2.7 |b|| | 1 |
| Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Front Direction indicator adversely affected by the operation of another lamp Not working when lights turned on (4.4.3 (b)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Brake pedal pivot excessively worn |1.1.1 |b|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering front forks/wheel out of aliegnment |2.4 |a|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Rear Stop lamp not working not working on rear brake lever (4.3.1 (a) (ii)) | 1 |
| Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Position lamp likely to become detached (4.2.1 (c) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak Both offside and near side (5.3.2 (b)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (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 |
| 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 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Front Wheel excessively damaged |5.2.2 |c| |i|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Front Brake fluid reservoir fluid not visible |1.1.10 |d| |iii|| | 1 |
| Front Brake master cylinder leaking |1.1.10 |b| |ii|| | 1 |
| Front Wheel spindle loose |5.2.1 |c| |i|| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Headlamp aim not tested dipped beam not working unable to check aim |4.1.2 |b|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp light intensity severely reduced high beam working but is only a glimmer .lack of dc voltage throughout motorcycle electrics may be the cause |4.1.4 |a|| | 1 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort indicates excessive runout in rear brake disc (1.2.1 (e)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen headlamp has no beam pattern (4.1.2 (a)) | 1 |
| Front Wheel bearing play so excessive that directional control is impaired excessive play in front wheel (suspected wheel spindle loose) (5.1.3 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen kick up going to wrong side O/S instead of N/S (4.1.2 (a)) | 1 |
| Headlamp insecure bulb in lamp (4.1.1 (c)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Registration plate issues | 1 |
| Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Exhaust has a major leak of exhaust gases silencer joint (6.1.2 (a)) | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |