| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Registration plate lamp issues | 13 |
| Rear reflector missing (4.8.2 (a) (ii)) | 10 |
| Rear reflector missing |4.8.2 |a| |ii|| | 10 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 9 |
| Stop lamp remains on when the brakes are released | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Registration plate issues | 6 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 5 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 4 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Headlamp insecure |4.1.1 |c|| | 3 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Fairings insecure and likely to impede the steering HAND GUARD |2.1.2e| | 1 |
| Offside Fairings insecure and likely to impede the steering HAND GUARD |2.1.2e| | 1 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Rear Wheel spoke missing rear wheel (5.2.2 (d)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Nearside Rear Direction indicator missing |4.4.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator missing |4.4.1 |a| |ii|| | 1 |
| Rear Brake caliper leaking and braking performance affected |1.1.16 |b| |ii|| | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level |1.1.10 |d| |ii|| | 1 |
| Rear Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Roller brake test brake efficiency less than 27.5% overall |1.2.2 |a| |ii|| | 1 |
| Brake pedal pivot has excessive free play (1.1.1 (b)) | 1 |
| Nearside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Stop lamp not working WHEN REAR BRAKE APPLIED. (4.3.1 (a) (ii)) | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Drive chain horseshoe locking device likely to become detached Fitted wrong way round (6.1.7 (j) (ii)) | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected Both bolts loose (1.1.16 (c) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls broken switch connection (4.3.2 (a) (iii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort 50% (1.2.1 (e)) | 1 |
| Direction indicator not working N/S REAR (4.4.1 (a) (ii)) | 1 |
| Front Brake component inadequately mounted (1.1.21 (c)) | 1 |
| Rear Brake component inadequately mounted (1.1.21 (c)) | 1 |
| Rear Footrest missing Both (6.2.12 (a)) | 1 |
| Fuel system component leaking Carburetor (6.1.3 (b) (i)) | 1 |
| Rear Suspension attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Drive chain so loose it is likely to fail chain loose likely to come off. (6.1.7 (c) (ii)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Throttle operating incorrectly engine tone changing on lock to lock. (6.2.7 (a) (i)) | 1 |
| Shock absorber has a serious fluid leak both front shockers leaking. (5.3.2 (b)) | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced side stand mount fractured from frame (6.1.1 (b) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Rear Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Front Forks in such a condition that steering control is adversely affected |2.2.2 |d| |ii|| | 1 |
| Front Forks excessively deformed both |2.2.2 |d| |i|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Lower Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| Nearside Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced footrest mounting bracket bent and has split the mounting weld (6.1.1 (b) (ii)) | 1 |
| Offside Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced footrest mounting bracket bent and has split the mounting weld (6.1.1 (b) (ii)) | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Headlamp not working on dipped beam main beam staying on (4.1.1 (a) (ii)) | 1 |
| Rear Direction indicator incorrect colour x2 (4.4.3 (a)) | 1 |
| Rear brake binding | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp reflector seriously defective (4.1.1 (b) (ii)) | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Stop lamp not working pedal switch wiring broken |4.3.1 |a| |ii|| | 1 |
| Fork yoke insecure upper nut missing (2.2.2 (d) (i)) | 1 |
| Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Position lamp showing red light to the front (4.2.3 (a) (ii)) | 1 |
| Front Brake master cylinder insecure (1.1.10 (c)) | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Headlamp insecure brackets broken (4.1.1 (c)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls lever wires cut (4.3.2 (a) (iii)) | 1 |
| Offside Steering operation fouling on the fuel tank or bodywork on full lock lock stop bent (2.1.4 (b)) | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Lower Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Rear Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Rear Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Wheel bearing play so excessive it is likely to break up REAR |5.1.3 |a| |ii|| | 1 |
| Front Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. Forks solid due to impact damage and are bent . |2.3.6b| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Handlebar mounting so insecure that steering is adversely affected |2.2.1 |a| |ii|| | 1 |
| Offside Rear Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Nearside Rear Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Fuel tank leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Rear reflector defective or damaged by more than 50% of the reflecting surface missing (4.8.1 (a) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Fuel tank leaking tankj attachment to pipe (6.1.3 (b) (i)) | 1 |
| Forks excessively deformed twisted in yokes (2.2.2 (d) (i)) | 1 |
| Exhaust system insecure silencer (6.1.2 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Headlamp reflector missing |4.1.1 |b| |ii|| | 1 |
| Rear Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |