| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 31 |
| Headlamp aim out of alignment | 18 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 14 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 12 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 10 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 8 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 8 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 7 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 5 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 3 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Horn not working (7.7 (a)) | 3 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 3 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 3 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 3 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Exhaust system insecure (6.1.2 (a)) | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Registration plate issues | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Riders seat insecure |6.2.5 |a| |ii|| | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Offside Front Position lamp not working (4.2.1 (a)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Suspension component pin or bush excessively worn Both top shock bushes (5.3.4 (a) (i)) | 1 |
| Shock absorber has a serious fluid leak Both forkseals (5.3.2 (b)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Riders seat with a defective supporting structure (6.2.5 (a) (i)) | 1 |
| Front Position lamp showing red light to the front (4.2.3 (a) (ii)) | 1 |
| Offside Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Upper Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Front Motorcycle structure is so deformed it is likely to adversely affect braking or steering forks/yokes twisted (6.1.1 (a) (ii)) | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Front Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear Suspension arm attachment bracket/mounting insecure bolts missing (5.3.3 (a) (i)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle running high and not returning correctly (6.2.7 (a) (ii)) | 1 |
| Rear Lower Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Exhaust has a major leak of exhaust gases bolt missing from header (6.1.2 (a)) | 1 |
| Offside Rear Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Offside Rear Shock absorber has an excessively worn bush too much side to side movement (5.3.2 (c)) | 1 |
| Nearside Front Brake lever has insufficient reserve travel rear brake (1.1.2 (a)) | 1 |
| Lower Engine mounting/bracket missing (6.1.8 (a) (ii)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Engine mounting/bracket damaged or deteriorated resulting in excessive movement bush gone (6.1.8 (a) (i)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Forks excessively corroded (2.2.2 (d) (i)) | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Rear Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Offside Front Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn Engine mount/rear supension bushes excessively deteriorated (5.3.4 (a) (i)) | 1 |
| Rear Valve stem seriously damaged Deteriorated (5.2.3 (j)) | 1 |
| Front Valve stem seriously damaged Deteriorated (5.2.3 (j)) | 1 |
| Front Forks excessively corroded (2.2.2 (d) (i)) | 1 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Offside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| Offside Rear Footrest missing not useable pivot seized (6.2.12 (a)) | 1 |
| Nearside Shock absorber has a serious fluid leak Fork seal (5.3.2 (b)) | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Rear Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Front Stop lamp not working switch (4.3.1 (a) (ii)) | 1 |
| Offside Front Brake disc significantly and obviously worn Disc warn beyond wear limit. (1.1.14 (a) (i)) | 1 |
| Central Front Headlamp not working on main beam Neither main beam working when switched. (4.1.1 (a) (ii)) | 1 |
| Central Rear Suspension arm attachment bracket/mounting insecure Excessive play on swing arm bearings. (5.3.3 (a) (i)) | 1 |
| Engine mounting/bracket bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Suspension component pin or bush excessively worn engine or swing arm/under covers cant see component (5.3.4 (a) (i)) | 1 |
| Stop lamp not working from front brake lever (4.3.1 (a) (ii)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Brake lever pivot excessively tight |1.1.1 |a|| | 1 |
| Stop lamp not working not working when near side brake lever is applied (4.3.1 (a) (ii)) | 1 |
| Rear Engine mounting/bracket damaged or deteriorated resulting in excessive movement |6.1.8 |a| |i|| | 1 |
| Nearside Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected Throttle Housing Loose (6.2.7 (a) (ii)) | 1 |
| Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced Upper Engine Mount Bush Failed (6.1.1 (b) (ii)) | 1 |
| Nearside Handlebar grip insecure to handlebar Left Grip Loose (2.2.1 (d) (ii)) | 1 |
| Throttle operating incorrectly Throttle Grip Sticking (6.2.7 (a) (i)) | 1 |
| Nearside Front Position lamp light intensity significantly reduced Side Light (4.2.3 (a) (ii)) | 1 |
| Offside Position lamp light intensity significantly reduced Side Light (4.2.3 (a) (ii)) | 1 |
| Nearside Shock absorber has a serious fluid leak Seal Failed (5.3.2 (b)) | 1 |
| Offside Shock absorber has a serious fluid leak Seal Failed (5.3.2 (b)) | 1 |
| Nearside Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Front Suspension component has excessive wear or free play Major Pitting On Leg (5.3.3 (d)) | 1 |
| Offside Front Suspension component has excessive wear or free play Major Pitting On Leg (5.3.3 (d)) | 1 |
| Front Headlamp light intensity severely reduced Main Beam (4.1.4 (a)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake drum fractured (1.1.14 (a) (ii)) | 1 |
| Nearside Front Brake lever has insufficient reserve travel Rear Brake |1.1.2 |a|| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Nearside Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake lever has insufficient reserve travel adjusted rear cable (1.1.2 (a)) | 1 |
| Offside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Brake lever has insufficient reserve travel have adjusted (1.1.2 (a)) | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Inner Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the steering front end of scooter seems to be bending to the side |2.4 |a|| | 1 |
| Exhaust has a major leak of exhaust gases Down pipe has split and causing gases to escape. |6.1.2 |a|| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front stop switch not illuminating rear stop light. (4.3.2 (a) (iii)) | 1 |
| Engine mounting/bracket excessively loose rear engine/suspension mount bush securing bolt loose. (6.1.8 (a) (ii)) | 1 |
| Wheel fixing loose (single fixing) excessive movement in rear wheel. (5.2.1 (a) (ii)) | 1 |
| Headlamp insecure front panels all loose that hold headlight in position. (4.1.1 (c)) | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement engine bracket mounting bush deteriorated. (6.1.8 (a) (i)) | 1 |
| Rear Brake lever has insufficient reserve travel lever pulls to bars. (1.1.2 (a)) | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement |6.1.8 |a| |i|| | 1 |
| Offside Front Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Nearside Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 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 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle slightly sticking or excess high idle speed causing drive to rear wheel continuously when engine running, (6.2.7 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Central Front Upper Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Brake component inadequately mounted Torque reaction bracket bolt missing (1.1.21 (c)) | 1 |
| Brake lever has abnormal movement of levers indicating excessive wear or maladjustment rear brake (1.1.15 (f)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Offside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Headlamp light intensity severely reduced o/s headlamp bulb not fitted correctly (4.1.4 (a)) | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Brake hose excessively damaged (1.1.12 (b) (ii)) | 1 |
| Shock absorber has an excessively worn bush both rear upper mounting bushes (5.3.2 (c)) | 1 |
| Front Brake hose leaking (1.1.12 (c)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock WIRING FROM MAIN SWITCH ETC WIRED AROUND FORKS AND LIKE TO BE DETACHED FROM STEERING MOVEMENT (2.1.4 (a)) | 1 |
| Front Valve stem seriously damaged perished |5.2.3 |j|| | 1 |
| Rear Valve stem seriously damaged perished |5.2.3 |j|| | 1 |
| Headlamp light intensity severely reduced pattern deteriated |4.1.4 |a|| | 1 |
| Front Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Nearside Brake lever has abnormal movement of levers indicating excessive wear or maladjustment lever has no reserve travel (1.1.15 (f)) | 1 |
| Rear Motorcycle structure is fractured and structural rigidity is significantly reduced rear frame work to top box insecure (6.1.1 (a) (i)) | 1 |
| Offside Rear Motorcycle structure is fractured and structural rigidity is significantly reduced grab handle loose and broken with sharp edges (6.1.1 (a) (i)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Front Position lamp lens seriously defective (4.2.1 (b)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Suspension component has excessive wear or free play (5.3.3 (d)) | 1 |
| Offside Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |