| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Rear reflector missing (4.8.2 (a) (ii)) | 9 |
| Registration plate lamp issues | 6 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Offside Rear Footrest missing (6.2.12 (a)) | 4 |
| Riders seat insecure (6.2.5 (a) (ii)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Registration plate issues | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Brake pedal is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Stop lamp with a multiple light source more than 1/2 not functioning (4.3.1 (a) (ii)) | 1 |
| Rear All position lamps light intensity significantly reduced Rear lamp less than 50% operational (4.2.3 (a) (ii)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Throttle operating incorrectly Main switch gear/throttle housing insecure (6.2.7 (a) (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 |
| Rear Stop lamp does not illuminate by the operation of both brake controls STOP LIGHT NOT WORKING ON CONTROL 1 OR 2 (4.3.2 (a) (iii)) | 1 |
| Front Brake pivot excessively worn (1.1.15 (b)) | 1 |
| Rear Brake hose connection leaking (1.1.12 (c)) | 1 |
| Rear Brake pedal so insecure that the brake cannot be readily applied (1.1.2 (e) (ii)) | 1 |
| Rear Brake component modification unsafe brake caliper rod modified and covered in tape (1.1.21 (d) (i)) | 1 |
| Offside Rear Direction indicator likely to become detached broken (4.4.1 (c) (ii)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Suspension arm ball joint excessively worn swing arm (5.3.4 (a) (i)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Drive chain sprocket worn to excess front and rear sprockets (6.1.7 (c) (i)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Suspension component pin or bush excessively worn shock absorber linkage (forward bush) (5.3.4 (a) (i)) | 1 |
| Offside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected THROTTLE UNIT INSECURE (6.2.7 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak Right hand fork seal leaking (5.3.2 (b)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Position lamp not working Front side light innop (4.2.1 (a)) | 1 |
| Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Suspension arm attachment bracket/mounting insecure Main swingarm bolt insecure (5.3.3 (a) (i)) | 1 |
| Front Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Offside Rear Footrest missing pillon foot rest (6.2.12 (a)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected insucre (6.2.7 (a) (ii)) | 1 |
| Offside Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected THROTTLE PULLS ON RIGHT TURN (6.2.7 (a) (ii)) | 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 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |