| Most common failures | No# failures |
|---|
| Drive chain excessively loose (6.1.7 (c) (i)) | 15 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 13 |
| Front Brake excessively binding (1.2.1 (f)) | 13 |
| Headlamp aim out of alignment | 11 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 10 |
| Registration plate lamp issues | 8 |
| Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| 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)) | 7 |
| Stop lamp remains on when the brakes are released | 6 |
| Rear Brake excessively binding (1.2.1 (f)) | 6 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 5 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 5 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 4 |
| Registration plate issues | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Rear Shock absorber has negligible damping effect seized shock or linkage (5.3.2 (b)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Brake performance unable to be tested (1.2.1 (g)) | 2 |
| Rear 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)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 2 |
| Offside Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Offside Rear Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect seized (5.3.2 (b)) | 1 |
| Rear Suspension rod modified so the suspension is inoperative (5.3.3 (c) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Exhaust has a major leak of exhaust gases Silencer holed (6.1.2 (a)) | 1 |
| Shock absorber has negligible damping effect Rear suspension seized solid (5.3.2 (b)) | 1 |
| Front Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Rear Suspension rod corroded and seriously weakened (5.3.3 (b) (i)) | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Front Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Offside Rear Stop lamp does not illuminate by the operation of both brake controls Stop light does not activate when applying the rear brake pedal. (4.3.2 (a) (iii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls rear brake switch corroded and out of adjustment (4.3.2 (a) (iii)) | 1 |
| Front Throttle control functioning such that safe operation of the motorcycle is adversely affected Throttle sticks at different points in the motorcycles steering movement (6.2.7 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Shock absorber has negligible damping effect no movement on rear (5.3.2 (b)) | 1 |
| Rear Stop lamp not working New switch fitted (4.3.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Suspension component modified so the suspension is inoperative Rear suspension is solid (5.3.3 (c) (ii)) | 1 |
| Rear Valve stem seriously damaged Valve stem splitting (5.2.3 (j)) | 1 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Front Brake caliper damaged (1.1.16 (a) (i)) | 1 |
| Steering operation restricted in free movement from lock to lock Handlebars in incorrect position (2.1.4 (c)) | 1 |
| Rear Suspension component ball joint excessively worn PLAY IN REAR SUSPENSION BUSHES (5.3.4 (a) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Rear brake switch faulty (4.3.2 (a) (iii)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Rear Lower Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Front Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Front Brake component modification adversely affecting braking performance front brake hose trapped on lock (1.1.21 (d) (ii)) | 1 |
| Stop lamp not working both front and rear (4.3.1 (a) (ii)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Suspension component damaged and seriously weakened both front forks bent (5.3.3 (b) (i)) | 1 |
| Front Wheel spindle locking device ineffective split pin missing (5.2.1 (d)) | 1 |
| Rear Wheel spindle locking device ineffective split pin missing (5.2.1 (d)) | 1 |
| Rear Suspension component modified so the suspension is inoperative no movement in rear suspension (5.3.3 (c) (ii)) | 1 |
| Rear Brake excessively binding severer binding, rear calliper. Now fixed (prs) (1.2.1 (f)) | 1 |
| Central Front Upper Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Suspension damaged and seriously weakened Rear triangle seized (5.3.3 (b) (i)) | 1 |
| Rear Stop lamp not working Via rear brake switch (4.3.1 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Stop lamp not working stop lamp not working when rear brake pressed (4.3.1 (a) (ii)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Brake performance unable to be tested (1.2.1 (g)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Central Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Stop lamp not working from rear brake pedal (4.3.1 (a) (ii)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Suspension rod pin or bush excessively worn no movement as siezed
linkage and bushes (5.3.4 (a) (i)) | 1 |
| Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Shock absorber has negligible damping effect Rear suspension very stiff (5.3.2 (b)) | 1 |
| Central Rear Upper Stop lamp does not illuminate by the operation of both brake controls Does not operate from rear brake (4.3.2 (a) (iii)) | 1 |
| Central Rear Lower Shock absorber has negligible damping effect The rear suspension is solid and does not move. (5.3.2 (b)) | 1 |
| Nearside Rear Drive chain horseshoe locking device incorrectly fitted Link is incorrect size for chain fitment and is likely to become dethatched. (6.1.7 (j) (i)) | 1 |
| Rear Suspension component modified so the suspension is inoperative suspension assembly does not move ....not modified but no other option to describe (5.3.3 (c) (ii)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Suspension component modified so the suspension is inoperative (5.3.3 (c) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Roller brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Offside Front Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Brake performance unable to be tested pads very low (1.2.1 (g)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |