| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 31 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 24 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 23 |
| Registration plate lamp issues | 13 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 11 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 10 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 9 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 8 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 8 |
| Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Headlamp aim not tested (4.1.2 (b)) | 7 |
| Horn not working (7.7 (a) (ii)) | 7 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Registration plate issues | 6 |
| Stop lamp remains on when the brakes are released | 6 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 5 |
| Rear Position lamp not working (4.2.1 (a)) | 4 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 4 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 4 |
| Riders seat insecure (6.2.5 (a) (ii)) | 4 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 4 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 4 |
| All direction indicators not working (4.4.1 (a) (ii)) | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 3 |
| Indicator switch inoperative |4.4.2 |a| |ii|| | 3 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 3 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front brake disc in such a condition that it is seriously weakened | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 2 |
| Front 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 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| 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)) | 2 |
| Rear reflector defective or damaged by more than 50% of the reflecting surface obscured by more than 50% (4.8.1 (a) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Valve stem seriously damaged Perished. |5.2.3 |j|| | 1 |
| Rear Valve stem seriously damaged Perished. |5.2.3 |j|| | 1 |
| Rear Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Stop lamp showing white light to the rear (4.3.3 (a) (ii)) | 1 |
| Rear Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Headlamp aim projected beam image obviously incorrect bulb incorrectly fitted (4.1.2 (c)) | 1 |
| Brake cable has restricted free movement not mounted at actuator arm correctly (1.1.15 (e)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 1 |
| Stop lamp not working from front/right hand lever (4.3.1 (a) (ii)) | 1 |
| Front Brake hose excessively damaged (1.1.12 (b) (ii)) | 1 |
| Front Brake hose damaged and likely to fail (1.1.12 (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 |
| Front Motorcycle structure has a fracture which is likely to adversely affect braking or steering FAIRING |6.1.1 |a| |ii|| | 1 |
| Rear Motorcycle structure has a fracture which is likely to adversely affect braking or steering FAIRING |6.1.1 |a| |ii|| | 1 |
| Stop lamp adversely affected by the operation of another lamp |4.3.3 |b|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Handlebar deformed to the extent that steering is affected |2.2.1 |c| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Riders seat insecure Doesnt secure down on lock (6.2.5 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Position lamp not working Front (4.2.1 (a)) | 1 |
| Shock absorber has negligible damping effect Rear (5.3.2 (b)) | 1 |
| Stop lamp emits other than a steady red light White light (4.3.3 (a) (ii)) | 1 |
| Front Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Rear Brake performance not tested rear brake jammed on (1.2.1 (g)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Brake performance not tested front and rear brakes binding (1.2.1 (g)) | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Stop lamp not working Front brake switch faulty |4.3.1 |a| |ii|| | 1 |
| Shock absorber has a serious fluid leak Front left fork leg |5.3.2 |b|| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| All direction indicators not working No Flashing when engine running (4.4.1 (a) (ii)) | 1 |
| Nearside Forks excessively corroded |2.2.2 |d| |i|| | 1 |
| Offside Forks excessively corroded |2.2.2 |d| |i|| | 1 |
| Shock absorber has a serious fluid leak left fork |5.3.2 |b|| | 1 |
| Shock absorber has a serious fluid leak right fork |5.3.2 |b|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Exhaust silencer likely to become detached |8.1.1 |b| |ii|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Brake performance not tested due to condition of front wheelbearing |1.2.1 |g|| | 1 |
| Steering headbearing excessively stiff or notchy stiff (2.2.2 (f) (i)) | 1 |
| Front Brake cylinder leaking brake master (1.1.16 (b) (i)) | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Nearside Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Stop lamp not working Front brake switch (4.3.1 (a) (ii)) | 1 |
| Lower Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen Beam pattern obviously incorrect (4.1.2 (a)) | 1 |
| Nearside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Lower Engine mounting/bracket missing (6.1.8 (a) (ii)) | 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 Upper Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Offside Upper Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Dipswitch does not operate immediately when selected on main beam |4.1.3 |b|| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| All direction indicators not working Indicators do not flash (4.4.1 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Rear Brake lever not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| All direction indicators not working all (4.4.1 (a) (ii)) | 1 |
| Suspension component pin or bush excessively worn excessive play in front head stock bearing (5.3.4 (a) (i)) | 1 |
| Nearside Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Offside Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Brake hose excessively deteriorated | 1 |
| Central Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Stop lamp not working on front brake control |4.3.1 |a| |ii|| | 1 |
| Rear Valve stem seriously misaligned |5.2.3 |j|| | 1 |
| Front Shock absorber has a serious fluid leak fork seals leaking front osf/nsf (5.3.2 (b)) | 1 |
| Shock absorber has negligible damping effect fork legs corrosion front fork legs (5.3.2 (b)) | 1 |
| Throttle operating incorrectly tick over to fast (6.2.7 (a) (i)) | 1 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake caliper inadequately mounted (1.1.16 (c) (i)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Brake disc insecure DISC BOLT LOSE (1.1.14 (a) (ii)) | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired axle nut slack on rear wheel (5.1.3 (a) (ii)) | 1 |
| Handlebar mounting so insecure that steering is adversely affected (2.2.1 (a) (ii)) | 1 |
| Nearside Front Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Front Steering linkage component insecure to the motorcycle structure |2.1.3 |a| |i|| | 1 |
| Front Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Brake lever has insufficient reserve travel Adjusted. (1.1.2 (a)) | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Offside Rear Suspension component pin or bush excessively worn swing arm bracket (5.3.4 (a) (i)) | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Offside Rear Suspension arm attachment bracket/mounting fractured (5.3.3 (b) (ii)) | 1 |
| Fuel cap leaking |6.1.3 |b| |i|| | 1 |
| Offside Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Shock absorber has a serious fluid leak FORK SEALS (5.3.2 (b)) | 1 |
| Headlamp not working on dipped beam Bulb replaced. (4.1.1 (a) (ii)) | 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 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Stop lamp lens defective such that the emitted light is adversely affected (4.3.1 (b) (ii)) | 1 |
| Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Brake hose damaged | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Rear Rear reflector missing reflector covered up by l plate (4.8.2 (a) (ii)) | 1 |
| Front Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 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 |
| Suspension arm ball joint excessively worn rear swing arm bushes (5.3.4 (a) (i)) | 1 |
| Upper Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Lower Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |