| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 73 |
| Rear reflector missing (4.8.2 (a) (ii)) | 70 |
| Registration plate issues | 30 |
| Front Brake excessively binding (1.2.1 (f)) | 21 |
| Registration plate lamp issues | 14 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 14 |
| Rear Brake excessively binding (1.2.1 (f)) | 14 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 12 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 8 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 8 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 7 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 6 |
| Stop lamp remains on when the brakes are released | 5 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 5 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 5 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 5 |
| Rear Position lamp not working (4.2.1 (a)) | 4 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 4 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (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)) | 4 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 4 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 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)) | 3 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 3 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear brake disc in such a condition that it is seriously weakened | 2 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Front Footrest insecure (6.2.12 (a)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Footrest insecure (6.2.12 (a)) | 2 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Rear Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Nearside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Brake disc significantly and obviously worn bent (1.1.14 (a) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Clutch lever positioned so it cannot be readily operated bent up (6.2.7 (b)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort disc warped (1.2.1 (e)) | 1 |
| Front Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Rear Footrest missing both nearside/offside footrest not fitted to motorcycle (6.2.12 (a)) | 1 |
| Steering operation impeded by a fairing both sides (2.1.4 (e)) | 1 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Front Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected Spindle locking device seriously loose (5.2.1 (c) (ii)) | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Offside Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock stop lock inefective (2.1.4 (a)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Nearside Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Offside Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Central Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Position lamp showing red light to the front both fronts (4.2.3 (a) (ii)) | 1 |
| Nearside Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Brake performance not tested (1.2.1 (g)) | 1 |
| Nearside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp incorrect colour Front lights are blue... (4.1.4 (a)) | 1 |
| Front Footrest missing (6.2.12 (a)) | 1 |
| Central Rear Lower Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Brake component modification unsafe brake caliper mount incorrectly fitted (1.1.21 (d) (i)) | 1 |
| Offside Front Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Central Front Horn not working (7.7 (a) (ii)) | 1 |
| Central Front Headlamp insecure (4.1.1 (c)) | 1 |
| Nearside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Footrest insecure (6.2.12 (a)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Handlebar excessively deformed (2.2.1 (c) (i)) | 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 Valve stem seriously damaged Valve stem perished. (5.2.3 (j)) | 1 |
| Rear Valve stem seriously damaged Valve stem perished. (5.2.3 (j)) | 1 |
| Drive chain worn to excess tight - loose spots (6.1.7 (c) (i)) | 1 |
| Rear Stop lamp emits other than a steady red light suspect faulty switch (4.3.3 (a) (ii)) | 1 |
| Nearside Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Central Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Wheel damaged or distorted to the extent that control of the motorcycle is likely to be adversely affected (5.2.2 (c) (ii)) | 1 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |