| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 14 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Rear reflector missing (4.8.2 (a) (ii)) | 12 |
| Registration plate lamp issues | 11 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Rear reflector missing |4.8.2 |a| |ii|| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 5 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Brake hose excessively deteriorated | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Direction indicator not working all |1.5.1c| | 2 |
| Registration plate issues | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Handlebar deformed |2.1.1b| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 2 |
| Offside Steering linkage locking device missing (2.1.3 (d)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Exhaust system insecure (6.1.2 (a)) | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 2 |
| Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Exhaust is leaking and excessively noisey downpipe |7.1.1b| | 1 |
| Rear Seat insecure pillion seat |6.2.1a| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front position lamp does not illuminate immediately when switched on side light |1.1.3a| | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear suspension bush has excessive free play swing arm |2.4.A2a|i|| | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Exhaust has part of the system missing baffle |7.1.1a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system corroded through on mount |7.1.1.c| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Rear Stop lamp not working ajust (4.3.1 (a) (ii)) | 1 |
| Rear suspension bearing has excessive free play swing arm pivot |2.4.A2a|i|| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Suspension component pin or bush excessively worn SWING ARM BUSHES (5.3.4 (a) (i)) | 1 |
| Central Front Lower Front position lamp does not illuminate immediately when switched on dip |1.1.3a| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Offside Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Stop lamp emits other than a steady red light rear switch |1.3.1b| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Rear Rear suspension bush has excessive free play s/arm |2.4.A2a|i|| | 1 |
| Stop lamp not working when rear brake applied (4.3.1 (a) (ii)) | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Brake drum missing missing r clip from brake stay arm (1.1.14 (c)) | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock rh h bar |2.1.4 |b|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Exhaust has a major leak of exhaust gases cylinder head flange |6.1.2 |a|| | 1 |
| Rear Brake rod insecure tie bar split pin missing |1.1.15 |c|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Forks excessively deformed (2.2.2 (d) (i)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock Right lock damaged (2.1.4 (b)) | 1 |
| Suspension arm pin or bush excessively worn Swingarm (5.3.4 (a) (i)) | 1 |
| Front Motorcycle structure is so deformed it is likely to adversely affect braking or steering Front forks are bent (6.1.1 (a) (ii)) | 1 |
| Upper Front suspension assembly component loose |2.3.1| | 1 |
| Front Stop lamp emits other than a steady red light stop light intermittent when operated from front brake. (4.3.3 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy stiff and notchy. (2.2.2 (f) (i)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected brake pedal pivot partially seized, causing brake to bind and grab. (1.1.2 (b) (ii)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies switch contacts cleaned |1.3.1a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Rear suspension bush excessively deteriorated swingarm bush |2.4.A2a|i|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Rear Brake excessively binding foot brake pedal siezed (1.2.1 (f)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Exhaust mounting does not fully support the exhaust system rear |7.1.1.c| | 1 |
| Stop lamp does not emit a steady light intermittant |1.3.1b| | 1 |
| Rear reflector on motorcycle obscured covered by rear l plate |1.4.1| | 1 |
| Rear reflector likely to become detached (4.8.1 (b) (ii)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear suspension bearing has excessive free play swingarm |2.4.A2a|i|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Offside Rear Wheel alignment incorrect which adversely affects the handling chain adjuster missing (2.4 (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 |
| Front Brake master cylinder insecure one of the bolts is missing (1.1.10 (c)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded front brakes binding badley |3.2.A1h| | 1 |
| Front Steering headbearing has excessive free play steering bearings very tight |2.2.2| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp not working Does not operate on the rear brake control |4.3.1 |a| |ii|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Rear Footrest missing pillion peg missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing pillion peg missing (6.2.12 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Exhaust silencer insecure CLAMP LOSE (8.1.1 (b) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on number plate light |1.1.3a| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Rear suspension bush has excessive free play Swing arm pivot bushes |2.4.A2a|i|| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Rear Brake grabbing severely |1.2.1 |c|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Drive chain excessively loose In Need of Adjustment/Replacement |6.2.1d| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear suspension bearing has excessive free play swinging arm bearings excessive play |2.4.A2a|i|| | 1 |
| Stop lamp not working rear control (4.3.1 (a) (ii)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Suspension arm ball joint excessively worn swingarm (5.3.4 (a) (i)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Stop lamp does not emit a steady light foot brake |1.3.1b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Wheel alignment incorrect which adversely affects the handling rear spindle loose and mis aligned |2.5.1| | 1 |
| Nearside Front Upper Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Front Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Offside Rear Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Direction indicator light intensity significantly reduced both front (4.4.3 (a)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working from rear brake lever (4.3.1 (a) (ii)) | 1 |
| Offside Footrest insecure (6.2.12 (a)) | 1 |
| Offside Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement |6.1.8 |a| |i|| | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced |6.1.1 |b| |ii|| | 1 |
| Rear Brake locking device missing brake plate |3.2.A1e| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain spring link |6.2.1h| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Throttle operating incorrectly revs staying up |6.2.1f| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride engine loose |6.2.1h| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front suspension assembly component loose top yolk mounting bolt insecure |2.3.1| | 1 |
| Rear suspension bearing has excessive free play swing arm |2.4.A2a|i|| | 1 |
| Rear suspension bush has excessive free play swinging arm bushes |2.4.A2a|i|| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Front Footrest insecure Split pin missing (6.2.12 (a)) | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |