| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 19 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 19 |
| Registration plate lamp issues | 11 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 9 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 7 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 7 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 7 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 6 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Registration plate issues | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Horn not working (7.7 (a)) | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 3 |
| Rear Stop lamp not working control (4.3.1 (a) (ii)) | 2 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Central Rear Lower Drive chain excessively tight, so that it is likely to fail Chain has a tight spot (6.1.7 (k) (ii)) | 1 |
| Central Front Upper Steering headbearing in such a condition that steering control is adversely affected Headrace bearing knocking (2.2.2 (f) (ii)) | 1 |
| Central Rear Outer Stop lamp switch with a delay in operation stop lamp operates/light after brake has been applied (4.3.2 (a) (ii)) | 1 |
| Central Rear Lower Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Brake component modification adversely affecting braking performance PARKING BRAKE NOT WORKING (1.1.21 (d) (ii)) | 1 |
| Front Brake excessively binding unable to turn wheel (1.2.1 (f)) | 1 |
| Rear Brake hose leaking (1.1.12 (c)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Nearside Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls ADJUSTED SWITCH (4.3.2 (a) (iii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Shock absorber has a serious fluid leak fork seal righthand leaking lefthand slight misting (5.3.2 (b)) | 1 |
| Fuel cap missing (6.1.3 (b) (i)) | 1 |
| Nearside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Horn sound not in accordance with requirements slightly muffled sound from horn when operated, required cleaning/adjusting (7.7 (c)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Offside Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Front Brake lever pivot excessively tight (1.1.1 (a)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Drive chain excessively tight links seized (6.1.7 (k) (i)) | 1 |
| Nearside Front Lower Wheel damaged or distorted to the extent that control of the motorcycle is likely to be adversely affected Front wheel has a buckle on the near side (5.2.2 (c) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling wheel alignment requires adjustment (2.4 (a)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Nearside Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Brake master cylinder insecure Bolts loose / re-secured. (1.1.10 (c)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Nearside Front Inner Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Central Front Position lamp not working (4.2.1 (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 |
| Central Front Upper Shock absorber has a serious fluid leak Front right hand fork seal (5.3.2 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Suspension arm pin or bush excessively worn rear shocker lower (5.3.4 (a) (i)) | 1 |
| Suspension arm attachment bracket/mounting insecure securing nut loose (5.3.3 (a) (i)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Drive chain horseshoe locking device likely to become detached clip missing (6.1.7 (j) (ii)) | 1 |
| Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Stop lamp not working off footbrake (4.3.1 (a) (ii)) | 1 |
| Central Rear Lower Wheel bearing has excessive play Rear wheel bearing play side to side (5.1.3 (a) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Offside Rear Lower Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |