| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 25 |
| Rear reflector missing (4.8.2 (a) (ii)) | 19 |
| Registration plate issues | 10 |
| Stop lamp remains on when the brakes are released | 9 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 6 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 5 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 4 |
| Front Position lamp not working (4.2.1 (a)) | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Registration plate lamp issues | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake grabbing severely Rear brake effort jumps from 10kg to 100kg when front brake applied (linked system) (1.2.1 (c)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Front Steering linkage ball joint has excessive play (2.1.3 (b) (i)) | 1 |
| Front Stop lamp not working brakelever switch (4.3.1 (a) (ii)) | 1 |
| Front Steering linkage ball joint has excessive play top ball joint (2.1.3 (b) (i)) | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear Brake hose excessively twisted Hose from fluid reservoir to master cylinder (1.1.12 (b) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Brake servo inoperative (1.1.10 (a) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn SWINGING ARM BUSH IN DRIVE SHAFT SIDE (5.3.4 (a) (i)) | 1 |
| Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (s) (1.2.1 (e)) | 1 |
| Central Front Headlamp aim unable to be tested Battery gone flat unable to start bike (4.1.2 (b)) | 1 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Nearside Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Central Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Steering linkage ball joint has excessive play upper lower front steering ball joints (2.1.3 (b) (i)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Shock absorber has negligible damping effect Rear suspension not working correctly (5.3.2 (b)) | 1 |
| Central Front Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Central Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Rear Brake hose leaking (1.1.12 (c)) | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Offside Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Central Front Upper Suspension component ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Nearside Footrest insecure (6.2.1a) | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Rear Brake fluid contaminated (1.8 (a)) | 1 |
| Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 1 |
| Central Rear Position lamp not working side light (4.2.1 (a)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Suspension component mounting modified so the suspension is inoperative seized rear linkage (5.3.3 (c) (ii)) | 1 |
| Nearside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Brake lagging in operation (1.2.1 (d)) | 1 |
| Offside Front Brake lagging in operation Brake failure light on clocks (1.2.1 (d)) | 1 |
| Central Rear Position lamp not working number plate light (4.2.1 (a)) | 1 |
| Nearside Direction indicator not working front and rear (4.4.1 (a) (ii)) | 1 |
| Rear Brake hose excessively twisted (1.1.12 (b) (ii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Front Lower Exhaust has a major leak of exhaust gases hole in left side of collector (6.1.2 (a)) | 1 |
| Offside Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Lower Suspension arm pin or bush excessively worn inner bushes (5.3.4 (a) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Brake grabbing severely rear brake grabbing when operated by front linked brake when engine running (1.2.1 (c)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect Dipped beam bulb incorrectly fitted. (4.1.2 (c)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |