| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 24 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 5 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Horn not working |1.7.3a| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 3 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Registration plate lamp issues | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear Stop lamp light intensity significantly reduced |4.3.3 |a| |ii|| | 2 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Registration plate issues | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Suspension arm attachment bracket/mounting insecure |5.3.3 |a| |i|| | 1 |
| Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Stop lamp not working foot brake. (4.3.1 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases down pipe. (6.1.2 (a)) | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Brake linkage has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Handlebar mounting clamp bolt loose bars loose |2.1.1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Offside Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Headlamp reflector missing (4.1.1 (b) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Brake caliper inadequately mounted (1.1.16 (c) (i)) | 1 |
| Rear Stop lamp not working adjusted. (4.3.1 (a) (ii)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Stop lamp not working front brake lever |4.3.1 |a| |ii|| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear shock absorber has inadequate damping effect. offside & nearside rear |2.4.A.3b| | 1 |
| Central Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Central Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Upper Stop lamp not working wire loose (4.3.1 (a) (ii)) | 1 |
| Offside Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Brake rod insecure (1.1.15 (c)) | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Brake component insecure rear brake arm (1.1.21 (c)) | 1 |
| Front Position lamp not working side light. (4.2.1 (a)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Brake component insecure Rear brake arm securing bolt. (1.1.21 (c)) | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Stop lamp missing |4.3.1 |a| |ii|| | 1 |
| Pillion seat insecure |6.2.6 |a| |ii|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Throttle operating incorrectly throttle very stiff and does not |6.2.1f| | 1 |
| Offside Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Central Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Throttle operating incorrectly insecure |6.2.1f| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride split link fitted incorrectly |6.2.1h| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Centre Rear suspension bush has excessive free play Swingsrm |2.4.A2a|i|| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Vehicle identification number not legible |0.2 |b|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Vehicle identification number has more than one different number displayed |0.2 |c|| | 1 |
| Chain guard insecure |6.1.7 |i|| | 1 |
| Rear Stop lamp light intensity significantly reduced front switch (4.3.3 (a) (ii)) | 1 |
| Nearside Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Rear Drive chain sprocket worn to excess sprocket rubbers badly worn (6.1.7 (c) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Rear Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| All direction indicators light intensity significantly reduced |4.4.3 |a|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Front Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| All position lamps light intensity significantly reduced |4.2.3 |a| |ii|| | 1 |
| Nearside Drive chain excessively tight, so that it is likely to fail |6.1.7 |k| |ii|| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn swinging arm bushes (5.3.4 (a) (i)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Lower Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 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 |
| Central Front Engine mounting/bracket bracket fractured top and bottom |6.1.8 |a| |ii|| | 1 |
| Central Rear Engine mounting/bracket bracket fractured top and bottom |6.1.8 |a| |ii|| | 1 |
| Motorcycle structure excessively damaged underside engine and main beam holed in 2 places |6.1.1a| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking rear carrier insecure |6.1.1c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Brake drum significantly and obviously worn Adjustment (1.1.14 (a) (i)) | 1 |
| Headlamp aim headlamp deteriorated and function impaired Glass twisted in headlight. |1.2.3a| | 1 |
| Stop lamp emits other than a steady red light Goes out when brake pedal pressed down fully. |1.3.1b| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Engine mounting/bracket missing Bracket mount bolt missing |6.1.8 |a| |ii|| | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Stop lamp not working from foot control |4.3.1 |a| |ii|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp switch with a delay in operation foot brake (4.3.2 (a) (ii)) | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Handlebar deformed excessive movement back and forth |2.1.1b| | 1 |
| Handlebar mounting clamp loose excessive movement back and forth |2.1.1a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Stop lamp switch with a delay in operation rear brake |4.3.2 |a| |ii|| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Nearside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Brake linkage excessively corroded |3.2.A1c| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Offside Rear Brake locking device missing brake pedal locking device |3.2.A1e| | 1 |
| Offside Rear Brake locking device insecure inadequate locking device on rod |3.2.A1e| | 1 |
| Offside Rear Brake pedal has inadequate reserve travel excessive |3.1.3b| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Stop lamp does not emit a steady light when FRONT and REAR applied |1.3.1b| | 1 |
| Offside Rear Upper Exhaust silencer likely to become detached missing (8.1.1 (b) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Stop lamp likely to become detached (4.3.1 (c) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Drive chain worn to excess Lack of lubricaition |6.2.1e| | 1 |