| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 8 |
| Horn not working (7.7 (a) (ii)) | 7 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Front Brake disc contaminated (1.1.14 (b)) | 6 |
| Rear Position lamp not working (4.2.1 (a)) | 6 |
| Stop lamp remains on when the brakes are released | 5 |
| Horn not working (7.7 (a)) | 5 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Registration plate lamp issues | 4 |
| Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 3 |
| Horn not working (1.7.3a) | 3 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Stop lamp remains on when the brake is released (1.3.1e) | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Throttle operating incorrectly (6.2.1f) | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Registration plate issues | 2 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Rear Brake master cylinder leaking (1.1.10 (b) (ii)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain sprocket worn to excess Both (6.1.7 (c) (i)) | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Central Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Rear Drive chain sprocket worn to excess (6.2.1e) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn SWING ARM BEARINGS (5.3.4 (a) (i)) | 1 |
| Handlebar restricted in free movement from lock to lock engine reving on lock (2.1.4 (c)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen NO VISIBLE BEAM PATTERN (1.6.B.1) | 1 |
| Front Floor brake test indicates a binding brake (3.3.C2c) | 1 |
| Steering control handlebar movement restricted by taut cables (2.1.2c) | 1 |
| Brake hose stretched by steering movement (3.2.B3b) | 1 |
| Front Brake disc(s) friction surface contaminated by oil or grease (3.2.A1k) | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock (2.1.4) | 1 |
| Offside Rear Brake pedal has inadequate reserve travel (3.1.3b) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. (3.3.C1b) | 1 |
| Rear Floor brake test indicates a severely juddering brake (3.3C2d.) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 1 |
| Front Headlamp aim not tested (1.6) | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Fuel cap sealing washer deteriorated (7.2.2c) | 1 |
| Rear Brake disc(s) cracked (3.2.A1g) | 1 |
| Lower Rear suspension bearing has excessive free play (2.4.A2a(i)) | 1 |
| Front wheel bearings have excessive free play (2.3.5b) | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment rear brake pedal excessive travel (1.1.15 (f)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Offside Rear Motorcycle structure joining/attachment plate or fastening insecure Subframe bolt (6.1.1 (b) (i)) | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak Fork leg pitted. Seal damaged. (5.3.2 (b)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle sticking (6.2.7 (a) (ii)) | 1 |
| Rear Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Front Brake hose bulging under pressure (1.1.12 (d)) | 1 |
| Front Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Steering operation restricted in free movement from lock to lock engine revs when turned full right lock (2.1.4 (c)) | 1 |
| Front Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Front Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Central Rear Stop lamp not working control 1 (4.3.1 (a) (ii)) | 1 |
| Central Rear Stop lamp not working control 2 (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp lens seriously defective (4.2.1 (b)) | 1 |
| Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Horn not working (7.7 (a) (ii)) | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment travels excessive and pumps up (1.1.15 (f)) | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment travel and pumps up (1.1.15 (f)) | 1 |
| Rear suspension movement is excessively stiff (2.4.A.3b) | 1 |
| Brake master cylinder severely corroded (3.2.B1b) | 1 |
| Rear wheel spindle securing nut locking device insecure (2.4.A.2b) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Brake has no recorded effort at a wheel No brake pedal pressure during roller brake test, resulting in no reading produced. (1.2.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Offside Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Stop lamp not working Rear brake does not illuminate stop lamp (4.3.1 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Suspension component pin or bush excessively worn Bottom rear shock bush (shock Fork) on to linkage (5.3.4 (a) (i)) | 1 |
| Shock absorber has a serious fluid leak Both front forks (5.3.2 (b)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle operating when turned lock to lock (6.2.7 (a) (ii)) | 1 |
| Front Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Rear Brake performance not tested (1.2.1 (g)) | 1 |
| Rear Wheel bearing has excessive play sprocket carrier bearing (5.1.3 (a) (i)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Shock absorber has a serious fluid leak both (5.3.2 (b)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Rear Footrest insecure stiff (6.2.12 (a)) | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |