| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 36 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 16 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 12 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 10 |
| Headlamp aim out of alignment | 9 |
| Registration plate issues | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Stop lamp remains on when the brakes are released | 6 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 4 |
| Headlamp aim not tested |4.1.2 |b|| | 4 |
| Rear brake disc in such a condition that it is seriously weakened | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Offside Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Rear Brake grabbing severely |1.2.1 |c|| | 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 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 2 |
| Offside Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Rear Direction indicator incorrect colour lens broken |1.5.1b| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort warped rear disc |1.2.1 |e|| | 1 |
| Central Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Upper Suspension component pin or bush excessively worn forward engine mounts |5.3.4 |a| |i|| | 1 |
| Outer Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Fuel cap missing |6.1.3 |b| |i|| | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement |6.1.8 |a| |i|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Headlamp incorrect colour main and dip beam |blue bulbs fitted| |4.1.4 |a|| | 1 |
| Rear Upper Suspension component pin or bush excessively worn forward |5.3.4 |a| |i|| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition no baffles fitted to aftermarket end can |8.1.1 |a|| | 1 |
| Headlamp lens seriously defective no pattern. |4.1.1 |b| |ii|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Brake disc significantly and obviously worn REAR BRAKE DISC HAS SIGNIFICANT RUN OUT |1.1.14 |a| |i|| | 1 |
| Headlamp aim not tested DIPPED BEAM NOT WORKING |4.1.2 |b|| | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Rear Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen LED BULB FITTED (4.1.2 (a)) | 1 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Offside Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Shock absorber has a serious fluid leak front left fork seal leaking excessively (5.3.2 (b)) | 1 |
| Front Stop lamp switch with a delay in operation BRAKE LEVER (4.3.2 (a) (ii)) | 1 |
| Throttle operating incorrectly ON LEFT HAND LOCK STICKING (6.2.7 (a) (i)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Central Rear Stop lamp not working not working off hand control (4.3.1 (a) (ii)) | 1 |
| Front Brake hose excessively twisted (1.1.12 (b) (ii)) | 1 |
| Horn not working horn replaced (7.7 (a) (ii)) | 1 |
| Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort DISC DISTORTED (1.2.1 (e)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort Brake lever pulses (1.2.1 (e)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort Brake lever pulses (1.2.1 (e)) | 1 |
| Offside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake disc insecure (1.1.14 (a) (ii)) | 1 |
| Indicator switch inoperative loose/insecure (4.4.2 (a) (ii)) | 1 |
| Throttle operating incorrectly Loose/insecure (6.2.7 (a) (i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Lower Motorcycle structure is fractured and structural rigidity is significantly reduced (6.1.1 (a) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Position lamp not working Both (4.2.1 (a)) | 1 |
| Headlamp missing (4.1.1 (a) (ii)) | 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 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Exhaust silencer likely to become detached Exhaust clamp missing silencer (8.1.1 (b) (ii)) | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Nearside Rear Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Throttle operating incorrectly Throttle housing spinning and throttle sticks open (6.2.7 (a) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Offside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Lower Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced (6.1.1 (c) (i)) | 1 |
| Front Steering headbearing excessively stiff or notchy notch in headrace bearings (2.2.2 (f) (i)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases link pipe has no clamp (6.1.2 (a)) | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |