| Most common failures | No# failures |
|---|
| Stop lamp remains on when the brakes are released | 33 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 23 |
| Headlamp aim out of alignment | 22 |
| Registration plate issues | 12 |
| Stop lamp not working (4.3.1 (a) (ii)) | 11 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 11 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 10 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 7 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 6 |
| Front Brake excessively binding (1.2.1 (f)) | 6 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Horn not working (7.7 (a)) | 6 |
| Registration plate lamp issues | 5 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 5 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 3 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 3 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 3 |
| Brake performance not tested (1.2.1 (g)) | 3 |
| 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 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Handlebar excessively deformed |2.2.1 |c| |i|| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Front Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Rear Brake fluid significantly below minimum mark |1.1.10 |d| |ii|| | 1 |
| Central Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Front Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Stop lamp not working control one |4.3.1 |a| |ii|| | 1 |
| Dipswitch does not operate immediately when selected on main beam |4.1.3 |b|| | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Nearside Front Direction indicator missing |4.4.1 |a| |ii|| | 1 |
| Offside Front Direction indicator missing |4.4.1 |a| |ii|| | 1 |
| Wheel spindle or securing nut|s| so insecure that wheel security or steering control is adversely affected rear wheel |5.2.1 |c| |ii|| | 1 |
| Front Handlebar grip insecure to handlebar throttle grip loose |2.2.1 |d| |ii|| | 1 |
| Front Handlebar grip insecure to handlebar left hand grip loose |2.2.1 |d| |ii|| | 1 |
| Front Steering headbearing excessively stiff or notchy head bearings need replaced |2.2.2 |f| |i|| | 1 |
| Brake performance not tested |1.2.1 |g|| | 1 |
| Stop lamp not working inoperative with rear brake operation |4.3.1 |a| |ii|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Central Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Suspension component modified so the suspension is inoperative rear suspension jammed. offside shock bent? (5.3.3 (c) (ii)) | 1 |
| Rear Suspension component likely to fail (5.3.3 (b) (ii)) | 1 |
| Brake lever has insufficient reserve travel control one (1.1.2 (a)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Front Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Offside Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Brake lever has insufficient reserve travel spongy (1.1.2 (a)) | 1 |
| Brake master cylinder insecure rear (1.1.10 (c)) | 1 |
| Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Offside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Offside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure front o/s fairing missing sharp edging (6.1.1 (b) (i)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Stop lamp not working control two (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected Cable over tightened, does not release properly. (6.2.7 (a) (ii)) | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp not working with applying the front brake (4.3.1 (a) (ii)) | 1 |
| Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Rear Outer Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Brake fluid contaminated (1.8 (a)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear reflector reflecting white to the rear (4.8.2 (a) (ii)) | 1 |
| Rear Exhaust system insecure (6.1.2 (a)) | 1 |
| Rear Shock absorber has negligible damping effect BOTH (5.3.2 (b)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak FORK SEALS (5.3.2 (b)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Brake excessively binding front and rear brakes binding (1.2.1 (f)) | 1 |
| Rear Direction indicator not working both (4.4.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Offside Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Front Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock Bringing on Rear brake (2.1.4 (b)) | 1 |
| Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Nearside Front Upper Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Nearside Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls rear brake switch (4.3.2 (a) (iii)) | 1 |
| Steering headbearing excessively stiff or notchy Notchy (2.2.2 (f) (i)) | 1 |
| Rear Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Nearside Rear Road spring fractured (5.3.1 (b) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Rear brake control not illuminating lamp (4.3.2 (a) (iii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Nearside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls not operating off rear brake lever (4.3.2 (a) (iii)) | 1 |
| Nearside Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Steering linkage component fractured to the extent that steering is affected head bearing (2.1.3 (c) (ii)) | 1 |
| Offside Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |