| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 25 |
| Headlamp aim out of alignment | 18 |
| Stop lamp remains on when the brakes are released | 11 |
| Stop lamp not working (4.3.1 (a) (ii)) | 8 |
| Rear Position lamp not working (4.2.1 (a)) | 8 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Horn not working (7.7 (a) (ii)) | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 5 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Horn not working (1.7.3a) | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Horn not working (7.7 (a)) | 4 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Steering movement excessively notchy with the weight on the lower bearing (2.2.1a) | 2 |
| Steering movement excessively notchy with the wheel raised (2.2.1b) | 2 |
| Rear Roller brake test indicates a binding brake (3.3.A1a) | 2 |
| Rear Brake grabbing severely (1.2.1 (c)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Position lamp not working (4.2.1 (a)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Registration plate issues | 2 |
| Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 2 |
| Handlebar excessively deformed Bent (2.2.1 (c) (i)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Rear Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced chain adjuster security plate and bolt missing (6.1.1 (b) (ii)) | 1 |
| Rear Suspension component pin or bush excessively worn linkage (5.3.4 (a) (i)) | 1 |
| Rear Brake hose excessively damaged (1.1.12 (b) (ii)) | 1 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Central Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 1 |
| Nearside Rear Locking device(s) not correctly fitted which may make the motor bicycle dangerous to ride (6.2.1h) | 1 |
| Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) | 1 |
| Nearside Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Headlamp aim beam image kick up to the offside (1.6) | 1 |
| Central Rear Lower Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (1.5.1c) | 1 |
| Brake pedal has inadequate reserve travel (3.1.3b) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced front fork stiffening brace plate bolts loose Repaired at station. (6.1.1 (b) (ii)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear Brake lever pivot has excessive free play foot brake (1.1.1 (b)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Motorcycle structure joining/attachment plate or fastening insecure L/H mirror (6.1.1 (b) (i)) | 1 |
| Offside Rear Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Nearside Rear Motorcycle structure joining/attachment plate or fastening insecure L/H chain adjuster loose (6.1.1 (b) (i)) | 1 |
| Central Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Central Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Central Lower Motorcycle structure joining/attachment plate or fastening insecure belly pan x2 fixing missing (6.1.1 (b) (i)) | 1 |
| Footrest insecure no split pins (6.2.12 (a)) | 1 |
| Front Brake disc significantly and obviously worn disc on 3.3mm. min thickness 4.5mm (1.1.14 (a) (i)) | 1 |
| Front Shock absorber has a serious fluid leak fork seals (5.3.2 (b)) | 1 |
| Rear Drive chain sprocket worn to excess worn and teeth hooked (6.1.7 (c) (i)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Rear Footrest insecure split pin missing (6.2.12 (a)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Drive chain worn to excess (6.2.1e) | 1 |
| Drive chain sprocket worn to excess (6.2.1e) | 1 |
| Horn emits 2 or more alternating tones (1.7.3b) | 1 |
| Fairing so located that it is likely to impede the steering (2.1.2e) | 1 |
| Nearside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear Position lamp likely to become detached (4.2.1 (c) (ii)) | 1 |
| Stop lamp not working both (4.3.1 (a) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Front Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen slanted to the right (4.1.2 (a)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Rear Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced (6.1.1 (b) (ii)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Offside Front Footrest insecure front footrest has cracked (6.2.12 (a)) | 1 |
| Rear Brake fluid contaminated (1.8 (a)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Stop lamp lens defective such that the emitted light is adversely affected (4.3.1 (b) (ii)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Fuel cap leaking seal perished (6.1.3 (b) (i)) | 1 |
| Nearside Rear Footrest insecure lhr footpeg locking device missing (6.2.12 (a)) | 1 |
| Throttle operating incorrectly fouling on left lock causing revs to rise, adjusted to correct tension (6.2.7 (a) (i)) | 1 |
| Rear Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Inner Horn not working connection (7.7 (a)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Forks in such a condition that steering control is adversely affected out of alignment (2.2.2 (d) (ii)) | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Road spring fractured (5.3.1 (b) (i)) | 1 |
| Front Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 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 |
| Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock Handguards removed (2.1.4 (b)) | 1 |
| Rear Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Roller brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Lower Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected Revs increase when steering turned to left or right (6.2.7 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen LED bulb fitted. (4.1.2 (a)) | 1 |
| Nearside Front Handlebar fouling on the fuel tank or bodywork on full lock switch gear fouling on bodywork on full lock and handguard fouling on screen (2.1.4 (b)) | 1 |
| Offside Front Handlebar fouling on the fuel tank or bodywork on full lock switch gear fouling on bodywork on full lock and handguard fouling on screen (2.1.4 (b)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |