| Most common failures | No# failures |
|---|
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 17 |
| Registration plate lamp issues | 14 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 10 |
| Headlamp aim out of alignment | 10 |
| Stop lamp remains on when the brakes are released | 10 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 6 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 6 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 5 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 4 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 4 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Registration plate issues | 4 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 4 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Rear Lower Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Stop lamp not working off foot pedal (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working Control 2 (Foot brake) (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Suspension arm pin or bush excessively worn swing arm bushes. excessive play. (5.3.4 (a) (i)) | 1 |
| Rear Footrest missing rear footrests missing (6.2.12 (a)) | 1 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Central Rear Upper Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock Contacting fuel tank on both left and right lock (2.1.4 (a)) | 1 |
| Front Brake master cylinder insecure Mounting bolt missing (1.1.10 (c)) | 1 |
| Front Lower Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Nearside Handlebar grip insecure to handlebar repaired (2.2.1 (d) (ii)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Stop lamp switch with a delay in operation front stop lamp switch (4.3.2 (a) (ii)) | 1 |
| All direction indicators incorrect colour (4.4.3 (a)) | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Offside Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Nearside Suspension component pin or bush excessively worn swinging arm bush (5.3.4 (a) (i)) | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Rear reflector missing red reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket excessively loose sprocket moving, nuts finger tight (6.1.7 (c) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls inoperative on front control (hand Lever) (4.3.2 (a) (iii)) | 1 |
| Central Front Steering headbearing has excessive wear or free play reset bearings (2.2.2 (f) (i)) | 1 |
| Central Rear Suspension arm ball joint excessively worn adjust swing arm bearings (5.3.4 (a) (i)) | 1 |
| Stop lamp not working front control (4.3.1 (a) (ii)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock Fouling fuel tank on N/S & O/S lock (2.1.4 (b)) | 1 |
| Nearside Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Suspension arm pin or bush excessively worn Side to side play in swingarm bushes (5.3.4 (a) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling Front wheel pointing towards N/S when bars dead ahead (2.4 (a)) | 1 |
| Rear Brake effort inadequate at a wheel Brake only achieving 21% & not locking (1.2.1 (a) (i)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Front Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Nearside Front Clutch lever shortened so it cannot be readily operated (6.2.7 (b)) | 1 |
| Brake pedal is bent and the brake cannot be readily applied Fouling lower fairing (1.1.2 (d)) | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Central Rear Upper Stop lamp does not illuminate by the operation of both brake controls rear brake light does not illuminate when rear brake pedal is pressed (4.3.2 (a) (iii)) | 1 |
| Central Rear Lower Suspension arm pin or bush excessively worn rear suspension swing arm bushes excessively worn resulting in excessive movement (5.3.4 (a) (i)) | 1 |
| Rear Inner Wheel bearing has excessive play rear wheel bearing worn in excess (5.1.3 (a) (i)) | 1 |
| Drive chain excessively loose and catching centre stand (6.1.7 (c) (i)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Central Front Upper Position lamp not working (4.2.1 (a)) | 1 |
| Central Front Upper Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Upper Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Suspension component has excessive wear or free play (5.3.3 (d)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Offside Front Footrest insecure BOLT MISSING (6.2.12 (a)) | 1 |
| Nearside Rear Shock absorber likely to become detached washer missing from top nut (5.3.2 (a) (ii)) | 1 |
| Throttle operating incorrectly On lock to lock check. (6.2.7 (a) (i)) | 1 |
| Headlamp aim not tested no dip beam (4.1.2 (b)) | 1 |
| Handlebar deformed to the extent that steering is affected bent (2.2.1 (c) (ii)) | 1 |
| Fork yoke excessively deformed (2.2.2 (d) (i)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Stop lamp not working When using rear brake control. (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working when front brake lever applied rear brake light not working. (4.3.1 (a) (ii)) | 1 |
| Headlamp aim not tested led bulb fitted - no measurable pattern (4.1.2 (b)) | 1 |
| Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Position lamp not working (4.2.1 (a)) | 1 |
| Shock absorber has a serious fluid leak Right & left fork seals (5.3.2 (b)) | 1 |
| Stop lamp not working rear stop switch not working (4.3.1 (a) (ii)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure rear fork (6.1.1 (b) (i)) | 1 |
| Headlamp not working on main beam cant start bike to test lights (4.1.1 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Suspension arm pin or bush excessively worn swingarm arm bearings (5.3.4 (a) (i)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected sticking (6.2.7 (a) (ii)) | 1 |
| Rear Inner Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake fluid contaminated (1.8 (a)) | 1 |
| Rear Outer Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Brake performance not tested on rear brake (1.2.1 (g)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Offside Rear Upper Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Stop lamp not working from rear brake (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Suspension component pin or bush excessively worn swingarm mounting (5.3.4 (a) (i)) | 1 |
| Rear Stop lamp switch with a delay in operation slow switching light off (4.3.2 (a) (ii)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Suspension arm ball joint excessively worn swing arm bushes excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Rear Wheel spindle loose Rear wheel moves back and forward when checking wheel bearing and swinging arm play. (5.2.1 (c) (i)) | 1 |