| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 60 |
| Rear reflector on motorcycle missing |1.4.1| | 27 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 21 |
| Registration plate issues | 14 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Drive chain excessively loose |6.2.1d| | 13 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 12 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 11 |
| Registration plate lamp issues | 11 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 9 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 6 |
| Nearside Rear Footrest missing |6.2.1a| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Rear reflector missing |4.8.2 |a| |ii|| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Handlebar deformed |2.1.1b| | 4 |
| Nearside Rear Direction indicators not working |1.5.1c| | 4 |
| Offside Rear Direction indicators not working |1.5.1c| | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Horn not working |1.7.3a| | 3 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Headlamp aim not tested (4.1.2 (b)) | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| All direction indicators not working |4.4.1 |a| |ii|| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 2 |
| Rear An item not tested |Manual| | 2 |
| Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Footrest missing |6.2.1a| | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Brake lever insecure Lever pivot lock nut loose |3.1.2a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front shock absorber seal failed and leaking oil both |2.3.3| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Inner Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Inner Rear Upper Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Upper Direction indicator insecure |1.5.3b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Direction indicator missing all indicators have been removed from machine |1.5.1a| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Throttle operating incorrectly excessive revs |6.2.1f| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. swing arm |2.4.A.2d| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Exhaust excessively deteriorated rusted through r/h/side rear |7.1.1a| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Front shock absorber seal failed and leaking oil both |2.3.3| | 1 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear suspension component excessively corroded. swingarm |2.4.A.1a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Steering headbearing has excessive wear or free play movement notchy |2.2.2 |f| |i|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment |1.1.15 |f|| | 1 |
| Stop lamp not working rear brake lever switch |4.3.1 |a| |ii|| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Offside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Handlebar handgrip missing |2.1.1c| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp deteriorated and function impaired goes on and off when bike moves |1.2.3a| | 1 |
| Rear Lower Rear suspension has a fracture of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Shock absorber has a serious fluid leak fork seal leaking . |5.3.2 |b|| | 1 |
| Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Front Brake lever mounting cracked |3.1.2c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front An item not tested |Manual| | 1 |
| Upper Fork yoke fractured |2.1.1b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Front Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies None operational from lever |1.3.1a| | 1 |
| Front shock absorber seal failed and leaking oil Both forks are leaking. |2.3.3| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake lever has restricted free movement |1.1.15 |e|| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Centre Upper All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Stop lamp insecure |1.3.3b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Rear Upper Stop lamp flickers when tapped lightly by hand |1.3.1d| | 1 |
| Nearside Front Upper Position lamp switch insecure |1.1.4b| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear Suspension component corroded and seriously weakened swing arm |5.3.3 |b| |i|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake hose which buldges |3.2.B4| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Front Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Front Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Fuel system component leaking |7.2.1a| | 1 |
| Offside Throttle operating incorrectly |6.2.1f| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Forks excessively deformed |2.2.2 |d| |i|| | 1 |
| Offside Handlebar grip missing |2.2.1 |d| |i|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Front Brake hose excessively kinked |3.2.B3a| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Exhaust has a major leak of exhaust gases major exhaust leak where the exhaust joins the engine |6.1.2 |a|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Front Valve stem seriously misaligned |5.2.3 |j|| | 1 |
| Offside Front Lower Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Offside Front Upper Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicator not working L/H front |1.5.1c| | 1 |
| Direction indicator not working R/H rear |1.5.1c| | 1 |
| Nearside Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Throttle operating incorrectly sticking |6.2.1f| | 1 |
| Motorcycle structure excessively corroded swingarm |underneath| |6.1.1a| | 1 |
| Front Stop lamp switch with a delay in operation Not working |4.3.2 |a| |ii|| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Direction indicator not working n/s + o/s (4.4.1 (a) (ii)) | 1 |
| Upper Engine mounting/bracket bracket missing (6.1.8 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced (6.1.1 (c) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Drive chain excessively tight (6.2.1d) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Throttle control functioning such that safe operation of the motorcycle is adversely affected lock to lock (6.2.7 (a) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Nearside Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Wheel spoke missing (5.2.2 (d)) | 1 |
| Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Motorcycle structure has excessive corrosion which adversely affects braking or steering REAR SWING ARM (6.1.1 (c) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn not working loose connection on horn (7.7 (a)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Suspension arm pin or bush excessively worn swing arm bush (5.3.4 (a) (i)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Suspension arm corroded and seriously weakened swinging arm.. (5.3.3 (b) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Suspension arm pin or bush excessively worn swing arm (5.3.4 (a) (i)) | 1 |
| Offside Front Footrest insecure Pin missing (6.2.12 (a)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Footrest missing rears (6.2.12 (a)) | 1 |