| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 61 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 20 |
| Rear reflector on motorcycle missing |1.4.1| | 19 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 13 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 13 |
| Registration plate issues | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Horn not working |1.7.3a| | 12 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 11 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Offside Rear Footrest missing |6.2.1a| | 10 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 9 |
| Nearside Rear Footrest missing |6.2.1a| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 7 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 7 |
| Drive chain excessively tight |6.2.1d| | 7 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 5 |
| Direction indicators not working |1.5.1c| | 5 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Rear Footrest missing |6.2.1a| | 4 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 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 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Rear Drive chain excessively tight |6.2.1d| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 3 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Headlamp aim not tested |4.1.2 |b|| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Front Front position lamp insecure |1.1.1c| | 2 |
| Footrest insecure |6.2.1a| | 2 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Suspension component ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Front wheel spindle loose |2.3.5a| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Brake performance not tested |3.3| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Upper Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Steering linkage locking device ineffective on right lock (2.1.3 (d)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Central Rear Position lamp not working (4.2.1 (a)) | 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 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Brake drum|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Brake drum|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket |6.2.1h| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Footrest insecure both |6.2.1a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Front Shock absorber has a serious fluid leak forks (5.3.2 (b)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Lower Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Rear Brake locking device insecure torque arm fixing arm bolt insecure |3.2.A1e| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride drive chain connectly link clip |6.2.1h| | 1 |
| Rear Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Front Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Rear Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Offside Indicator switch defective |1.5.4| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Offside Rear Brake locking device insecure |3.2.A1e| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front An item not tested |Manual| | 1 |
| Headlamp aim projected beam image obviously incorrect high and low beam incorrect position (4.1.2 (c)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Brake caliper inadequately mounted and braking performance affected fouling brake disc (1.1.16 (c) (ii)) | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| An item not tested |Manual| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Wheel spoke excessively corroded |4.2.1b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride drive chain split link clip fitted in wrong direction |6.2.1h| | 1 |
| Front Brake lever cannot be applied smoothly needs clean and lube |3.1.3d| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Fork yoke insecure bolt missing (2.2.2 (d) (i)) | 1 |
| Fuel system component leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Rear Suspension component pin or bush excessively worn linkage front and rear (5.3.4 (a) (i)) | 1 |
| Front Brake caliper inadequately mounted no lower slide (1.1.16 (c) (i)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Fuel pipe leaking (6.1.3 (b) (i)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Fuel system component leaking carburettor |7.2.1a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Stop lamp not working brake switch inop (4.3.1 (a) (ii)) | 1 |
| Rear Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Centre Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Brake lever attachment screws missing |3.1.2b| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Nearside Front Lower Brake master cylinder severely corroded |3.2.B1b| | 1 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Inner Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Front Brake hose excessively kinked |3.2.B3a| | 1 |
| Rear Rear suspension has a modification which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Outer Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Nearside Front Footrest insecure loose foot peg rubber. (6.2.12 (a)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Centre Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Front Front position lamp does not face the front |1.1.1d| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Nearside Front Lower Brake excessively binding |1.2.1 |f|| | 1 |
| Offside Rear Brake rod insecure loose split pin missing |1.1.15 |c|| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Brake hose excessively deteriorated | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Rear Brake lever excessively corroded |3.2.A1c| | 1 |
| Offside Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake locking device missing no split cotter fitted to rear brake anchor |3.2.A1e| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Nearside Front Upper Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Offside Front Brake master cylinder leaking |1.1.10 |b| |ii|| | 1 |
| Offside Front Brake master cylinder defective but brake still operating |1.1.10 |b| |i|| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Upper Rear suspension bush excessively deteriorated rear shocker bush has excessive movement when bike on centre stand |2.4.A2a|i|| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Rear Roller brake test indicates a sticking brake grabbing as well as sticking |3.3.A1a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam no pattern on beam |1.2.2a|i|| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Central Rear Lower Suspension arm pin or bush likely to become detached (5.3.4 (a) (ii)) | 1 |