| Most common failures | No# failures |
|---|
| Rear reflector missing (4.8.2 (a) (ii)) | 51 |
| Headlamp aim out of alignment | 46 |
| Registration plate issues | 29 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 13 |
| Front Brake excessively binding (1.2.1 (f)) | 11 |
| Registration plate lamp issues | 9 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Horn not working (7.7 (a)) | 7 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 7 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 5 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 4 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 4 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 4 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 4 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 4 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| 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)) | 3 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Nearside Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Front Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Offside Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Offside Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Position lamp not working dipped beam (4.2.1 (a)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Brake fluid significantly below minimum mark Front & Rear (1.1.10 (d) (ii)) | 1 |
| Rear Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Offside Brake disc insecure (1.1.14 (a) (ii)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Front Brake lining(s) contaminated (1.1.13 (b)) | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Central Front Lower Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Shock absorber has a serious fluid leak RIDERS R/H/S FORK. (5.3.2 (b)) | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Nearside Drive chain excessively loose Drive Chain 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 switch needed adjustment as not illuminating when rear brake used (4.3.2 (a) (iii)) | 1 |
| Offside Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Front Steering headbearing excessively stiff or notchy Front steering bearings adjusted (2.2.2 (f) (i)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Rear Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Rear 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 |
| Footrest missing rear (6.2.12 (a)) | 1 |
| Nearside Rear Lower Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls foot brake lever (4.3.2 (a) (iii)) | 1 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Offside Rear Exhaust silencer insecure clamp broken (8.1.1 (b) (i)) | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Central Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Nearside Rear Drive chain worn to excess drive chain fouling (6.1.7 (c) (i)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Offside Rear Exhaust silencer likely to become detached exhaust clamp broken (8.1.1 (b) (ii)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected turning to n/s throttle sticks (6.2.7 (a) (ii)) | 1 |
| Central Rear Upper Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Stop lamp not working From rear brake control (4.3.1 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak FORK SEAL LEAKING BADLY (5.3.2 (b)) | 1 |
| Nearside Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Stop lamp not working Front and rear (4.3.1 (a) (ii)) | 1 |
| Rear Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Offside Front Brake disc significantly and obviously worn distorted (1.1.14 (a) (i)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Offside Throttle control functioning such that safe operation of the motorcycle is adversely affected sticking on RH lock (6.2.7 (a) (ii)) | 1 |
| Stop lamp not working rear brake switch spring disconnected (4.3.1 (a) (ii)) | 1 |
| Rear Lower Suspension attachment bracket/mounting insecure Shock trilink (5.3.3 (a) (i)) | 1 |
| Central Rear Lower Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |