| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 15 |
| Registration plate issues | 8 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Rear Position lamp not working (4.2.1 (a)) | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Registration plate lamp issues | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Headlamp aim not tested |4.1.2 |b|| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Headlamp insecure |1.2.3b| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Brake pedal so insecure that the brake cannot be readily applied travel alowing it nearly touch the floor (1.1.2 (e) (ii)) | 1 |
| Brake pedal has insufficient reserve travel hitting frame as lock stop (1.1.2 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 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 |
| Offside Front All direction indicators incorrect colour LENZ BROKEN |4.4.3 |a|| | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Throttle operating incorrectly revs up on n/s lock (6.2.7 (a) (i)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Direction indicators not working no indicators fitted must be after 1986 |1.5.1c| | 1 |
| Stop lamp missing must have after 1986 |1.3.3a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired indication on switch incorrect |1.2.3a| | 1 |
| Offside Brake pedal so insecure that the brake cannot be readily applied |1.1.2 |e| |ii|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Nearside Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Offside Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Throttle operating incorrectly throttle sticking on right hand lock |6.2.1f| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Rear Brake component is excessively corroded causing mechanism to seize |3.1.5| | 1 |
| Stop lamp damaged and function impaired White light showing to the rear |1.3.3a| | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp not working bulb blown (4.3.1 (a) (ii)) | 1 |
| Horn not working fuse blown (7.7 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Suspension component pin or bush excessively worn swingarm (5.3.4 (a) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Footrest insecure |6.2.12 |a|| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Stop lamp adversely affected by the operation of another lamp |4.3.3 |b|| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Brake pedal pivot excessively tight |1.1.1 |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 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Rear sprocket retaining bolts loose. |6.2.1h| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected Throttle insecure |6.2.7 |a| |ii|| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Rear wheel bearings have excessive free play axial play |2.4.A.2c| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Stop lamp not working Rear brake pedal (4.3.1 (a) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Brake component insecure (1.1.21 (c)) | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Upper Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Chain guard insecure |6.1.7 |i|| | 1 |
| Stop lamp not working stop lamp not working on front or rear brake opperation (4.3.1 (a) (ii)) | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Wheel excessively distorted |5.2.2 |c| |i|| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Position lamp adversely affected by the operation of another lamp |4.2.3 |b|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 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 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Central Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Steering operation restricted in free movement from lock to lock speedo cable caught in lock stop (2.1.4 (c)) | 1 |
| Front Brake component inadequately mounted disc bolt locking tabs not bent over (1.1.21 (c)) | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied rear pedal height adjuster locking nut missing (1.1.2 (d)) | 1 |
| Position lamp not working dipped beam |4.2.1 |a|| | 1 |
| Front Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Front Brake hose stretched by suspension movement front brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride footrest pin |6.2.1h| | 1 |
| Rear suspension bearing has excessive free play swing arm |2.4.A2a|i|| | 1 |