| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 31 |
| Registration plate lamp issues | 22 |
| Rear reflector missing (4.8.2 (a) (ii)) | 14 |
| Rear reflector missing |4.8.2 |a| |ii|| | 11 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 8 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 7 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 7 |
| Front Position lamp not working |4.2.1 |a|| | 6 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 5 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 4 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Registration plate issues | 4 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Horn not working |1.7.3a| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 3 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 3 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 2 |
| Rear Brake pedal pivot excessively tight (1.1.1 (a)) | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 2 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 2 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Pillion seat insecure |6.2.6 |a| |ii|| | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Headlamp aim not tested |4.1.2 |b|| | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Brake pedal anti-slip provision missing (1.1.2 (c)) | 1 |
| Fuel system component leaking CARBE (6.1.3 (b) (i)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Nearside Rear Wheel more than one fixing loose wheel adjuster loose |5.2.1 |a| |ii|| | 1 |
| Offside Rear Wheel more than one fixing loose wheel adjuster loose |5.2.1 |a| |ii|| | 1 |
| Rear Wheel more than one fixing loose wheel spindal nut loose |5.2.1 |a| |ii|| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Drive chain sprocket so worn it is likely to fail front and rear |6.1.7 |c| |ii|| | 1 |
| Rear Stop lamp not working control |4.3.1 |a| |ii|| | 1 |
| Rear Brake component insecure brake reaction bracket no locking device fitted |1.1.21 |c|| | 1 |
| Offside Stop lamp not working not operating with foot pedal |4.3.1 |a| |ii|| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Stop lamp not working when brake pedal applied rear brake light not working. |4.3.1 |a| |ii|| | 1 |
| Drive chain excessively tight, so that it is likely to fail |6.1.7 |k| |ii|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Front Brake hose damaged and likely to fail do not drive |1.1.12 |a|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock on the throttle cable (2.1.4 (a)) | 1 |
| Clutch lever positioned so it cannot be readily operated (6.2.7 (b)) | 1 |
| Brake hose damaged | 1 |
| Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Stop lamp not working foot |4.3.1 |a| |ii|| | 1 |
| Rear Exhaust system insecure mounting bolts loose (6.1.2 (a)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Footrest missing Rear seat fitted so foot pegs should be in place, or fit a seat cowling to make it a single seat machine. (6.2.12 (a)) | 1 |
| Steering headbearing excessively stiff or notchy Notchy at the centred handlebar position. (2.2.2 (f) (i)) | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket attachment bolts insecure |6.2.1h| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Brake pedal pivot excessively tight (1.1.1 (a)) | 1 |
| Stop lamp not working rear brake pedal (4.3.1 (a) (ii)) | 1 |
| Wheel bearing has excessive play excess play - may be spacer missing |5.1.3 |a| |i|| | 1 |
| Drive chain sprocket so loose it is likely to fail cush drive excess play |6.1.7 |c| |ii|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced (6.1.1 (b) (ii)) | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake component insecure rear brake lever has bolt missing (1.1.21 (c)) | 1 |
| Brake master cylinder defective but brake still operating |1.1.10 |b| |i|| | 1 |
| Brake lever is bent and the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Central Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Engine mounting/bracket excessively loose |6.1.8 |a| |ii|| | 1 |
| Front Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced Frame |6.1.1 |b| |ii|| | 1 |
| Rear Brake linkage has abnormal movement of levers indicating excessive wear or maladjustment |1.1.15 |f|| | 1 |
| Offside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Footrest missing both (6.2.12 (a)) | 1 |
| Front Position lamp missing (4.2.1 (a)) | 1 |
| Stop lamp not working foot brake (4.3.1 (a) (ii)) | 1 |
| Rear Suspension arm ball joint excessively worn swinging arm bush (5.3.4 (a) (i)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Rear Suspension arm pin or bush excessively worn swinging arm pivot push worn |5.3.4 |a| |i|| | 1 |
| Steering headbearing excessively stiff or notchy notchy (2.2.2 (f) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Central Shock absorber has negligible damping effect Rear (5.3.2 (b)) | 1 |
| Rear Brake disc contaminated |1.1.14 |b|| | 1 |
| Nearside Footrest missing |6.2.12 |a|| | 1 |
| Offside Footrest missing |6.2.12 |a|| | 1 |
| Front Wheel more than one fixing loose |5.2.1 |a| |ii|| | 1 |
| Rear Brake excessively binding rear master cylinder seized (1.2.1 (f)) | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Steering linkage locking device missing (2.1.3 (d)) | 1 |
| Offside Front Vehicle identification number not legible (0.2 (b)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected sticking open (6.2.7 (a) (ii)) | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Central Front Headlamp insecure SLIGHTLY LOOSE ON BOTTOM ADJUSTER (4.1.1 (c)) | 1 |
| Rear Rear reflector missing TAPE FITTED. NOT LEGALLY ACCEPTABLE (4.8.2 (a) (ii)) | 1 |
| Offside Brake pedal has insufficient reserve travel EXCESSIVE RESERVE TRAVEL (1.1.2 (a)) | 1 |
| Central Front Headlamp aim projected beam image obviously incorrect NO BEAM PATTERN. LED BULB FITTED (4.1.2 (c)) | 1 |
| Stop lamp not working foot brake switch |4.3.1 |a| |ii|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Front 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 |
| Handlebar deformed |2.1.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride split link fitted wrong |6.2.1h| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Brake component insecure Rear torque arm (1.1.21 (c)) | 1 |
| Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies both |1.3.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Stop lamp not working stop light doesn`t work when rear brake pedal applied |4.3.1 |a| |ii|| | 1 |
| Rear Brake lever pivot excessively tight (1.1.1 (a)) | 1 |
| Rear Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Rear Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Footrest missing Pillion footrests missing. Dual seat fitted. |6.2.12 |a|| | 1 |
| Nearside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Exhaust silencer insecure |8.1.1 |b| |i|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Stop lamp not working foot brake (4.3.1 (a) (ii)) | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Suspension arm pin or bush excessively worn swing arm bush |5.3.4 |a| |i|| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Drive chain sprocket worn to excess cush drive rubbers |6.1.7 |c| |i|| | 1 |
| Drive chain sprocket worn to excess bearing |6.1.7 |c| |i|| | 1 |
| Nearside Front Direction indicator not working front N/S indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Nearside Front Suspension component damaged and seriously weakened fork leg bent (5.3.3 (b) (i)) | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Brake caliper excessively weakened by corrosion (1.1.16 (d) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Brake back plate insecure (1.1.14 (d)) | 1 |
| Central Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Suspension component pin or bush likely to become detached brake torque arm pin missing (5.3.4 (a) (ii)) | 1 |
| Front Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Nearside Handlebar mounting insecure |2.2.1 |a| |i|| | 1 |
| Offside Handlebar mounting insecure |2.2.1 |a| |i|| | 1 |
| Front Upper Engine mounting/bracket damaged or deteriorated resulting in excessive movement |6.1.8 |a| |i|| | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Central Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies stop light does not operate on rear brake |1.3.1a| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Brake caliper insecure pads dont seem to be mounted correctly in the caliper (1.1.16 (c) (i)) | 1 |