| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 12 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 6 |
| Horn not working (7.7 (a)) | 5 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Registration plate issues | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| All direction indicators not working (4.4.1 (a) (ii)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Nearside Front Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Brake excessively binding |1.2.1 |f|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Central Front Headlamp insecure (4.1.1 (c)) | 1 |
| Offside Front Brake caliper leaking and braking performance affected (1.1.16 (b) (ii)) | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Horn not working |1.7.3a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Rear Drive chain sprocket excessively loose Play in Cush drive (6.1.7 (c) (i)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear reflector missing covered by l plate |4.8.2 |a| |ii|| | 1 |
| Offside Front Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Brake linkage has abnormal movement of levers indicating excessive wear or maladjustment brake peddle bent,twisted upward (1.1.15 (f)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Stop lamp switch with a delay in operation not attached due to incorrect rear brake pedal adjustment (4.3.2 (a) (ii)) | 1 |
| Stop lamp not working not illuminating when rear brake pedal applied (4.3.1 (a) (ii)) | 1 |
| Nearside Front Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Wheel hub excessively worn rear wheel cush drive excessively worn (5.2.1 (b) (i)) | 1 |
| Forks in such a condition that steering control is adversely affected twisted out of alignment (2.2.2 (d) (ii)) | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Lower All position lamps not working (4.2.1 (a)) | 1 |
| Offside Throttle operating incorrectly rise in engine revs when steering to the right on full lock |6.2.7 |a| |i|| | 1 |
| Headlamp dipped beam affected by the operation of another lamp Main beam stuck on |1.2.2c| | 1 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Registration plate lamp issues | 1 |
| Central Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Nearside Front Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Offside Front Suspension component has excessive wear or free play Fork leg (5.3.3 (d)) | 1 |
| Forks excessively corroded (2.2.2 (d) (i)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Handlebar excessively deformed |2.2.1 |c| |i|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Nearside Front Handlebar grip insecure to handlebar Handlebar grip loose on LHS, remove and reapply using grip glue which will take 12 hrs to set (2.2.1 (d) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Brake rod insecure brake reation rod rear bolt safety split pin missing and not tight with washer insecure (1.1.15 (c)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |