| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 38 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 22 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 19 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 16 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 13 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 12 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 11 |
| Horn not working (7.7 (a)) | 10 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 9 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 9 |
| Stop lamp remains on when the brakes are released | 8 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 7 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 6 |
| Horn not working |7.7 |a| |ii|| | 6 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Headlamp aim not tested (4.1.2 (b)) | 5 |
| Front Position lamp not working (4.2.1 (a)) | 5 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 4 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 4 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Registration plate issues | 3 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 3 |
| Nearside Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 3 |
| Exhaust system insecure (6.1.2 (a)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 3 |
| Registration plate lamp issues | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Handlebar retaining device loose (2.2.1 (b) (i)) | 2 |
| Rear Brake lagging in operation (1.2.1 (d)) | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 2 |
| Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Brake hose damaged | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak EXCESSIVE OIL LEAK (5.3.2 (b)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 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 |
| Rear Brake has no recorded effort at a wheel Unable to stop wheel (1.2.1 (a) (ii)) | 1 |
| Exhaust silencer likely to become detached (Exhaust Brackets Corroded Through) (8.1.1 (b) (ii)) | 1 |
| Front Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Central Front Horn not working (7.7 (a)) | 1 |
| Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Dipswitch does not operate immediately when selected on main beam |4.1.3 |b|| | 1 |
| Brake lever has insufficient reserve travel rear system |1.1.2 |a|| | 1 |
| Brake lever has abnormal movement of levers indicating excessive wear or maladjustment rear brake |1.1.15 |f|| | 1 |
| Exhaust has a major leak of exhaust gases replaced exhaust system |6.1.2 |a|| | 1 |
| Wheel fixing loose (single fixing) rear wheel nut (5.2.1 (a) (ii)) | 1 |
| Shock absorber has a serious fluid leak left fork seal (5.3.2 (b)) | 1 |
| Rear Brake drum in such a condition that it is seriously weakened (1.1.14 (a) (ii)) | 1 |
| Headlamp aim not tested no dip beam (4.1.2 (b)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Suspension component corroded and seriously weakened fork legs excessive corrosion / pitting (5.3.3 (b) (i)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Brake lever has insufficient reserve travel adjusted rear brake (1.1.2 (a)) | 1 |
| Throttle operating incorrectly throttle opens on full right lock increasing engine speed (6.2.7 (a) (i)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| 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)) | 1 |
| Throttle operating incorrectly sticking (6.2.7 (a) (i)) | 1 |
| Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Front Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced mudguard missing (6.1.1 (b) (ii)) | 1 |
| Front Wheel alignment incorrect which adversely affects the handling FRONT FORKS/YOKE BENT (2.4 (a)) | 1 |
| Rear Exhaust system insecure silencer mount broken (6.1.2 (a)) | 1 |
| Nearside Front Wheel excessively damaged (5.2.2 (c) (i)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Motorcycle structure is so deformed it is likely to adversely affect braking or steering (6.1.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Suspension component attachment bracket/mounting damaged and seriously weakened hole in swingarm (5.3.3 (b) (i)) | 1 |
| Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Vehicle identification number not legible (0.2 (b)) | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Brake back plate insecure (1.1.14 (d)) | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 1 |
| Rear Stop lamp not working both brake control 1 and 2 (4.3.1 (a) (ii)) | 1 |
| Brake lever has insufficient reserve travel brake control 1 (1.1.2 (a)) | 1 |
| Exhaust has a major leak of exhaust gases exhaust pipe holed near cylinder head |6.1.2 |a|| | 1 |
| Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Rear Brake cylinder operating mechanism has excessive travel |1.1.16 |e| |i|| | 1 |
| Offside Shock absorber has a serious fluid leak offside front fork seal (5.3.2 (b)) | 1 |
| Front Steering operation fouling on the fuel tank or bodywork on full lock mud guard (2.1.4 (b)) | 1 |
| Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Handlebar mounting so insecure that steering is adversely affected handlebar needed tightening (2.2.1 (a) (ii)) | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Stop lamp switch with a delay in operation lever (4.3.2 (a) (ii)) | 1 |
| Nearside Front Brake lever has insufficient reserve travel lever for rear brake (1.1.2 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Stop lamp not working brake light not illuminating when front brake is applied (4.3.1 (a) (ii)) | 1 |
| Handlebar mounting insecure handle bar loose, bolt and nut loose. (2.2.1 (a) (i)) | 1 |
| Nearside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Fuel cap ineffective fuel cap seal split and pieces missing. (6.1.3 (b) (i)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle sticks wide open (6.2.7 (a) (ii)) | 1 |
| Offside Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Front Brake component insecure (1.1.21 (c)) | 1 |
| Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Wheel alignment incorrect which adversely affects the handling front forks bent (2.4 (a)) | 1 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Brake lever so insecure that the brake cannot be readily applied |1.1.2 |e| |ii|| | 1 |
| Offside Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Front Brake caliper insecurely mounted and braking performance affected fixing bolts loose (1.1.16 (c) (ii)) | 1 |
| Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Brake fluid not visible (1.1.10 (d) (iii)) | 1 |
| Headlamp insecure Headlamp adjusting bolt loose - Tightened (4.1.1 (c)) | 1 |
| Front Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Offside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected sticks on (6.2.7 (a) (ii)) | 1 |
| Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork seal leaking (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak fork seal leaking (5.3.2 (b)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Front Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Exhaust system insecure Mounting bolt missing (6.1.2 (a)) | 1 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Central Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |