| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Registration plate lamp issues | 11 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 6 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Offside Rear Footrest missing |6.2.12 |a|| | 4 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 4 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 4 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Front Brake grabbing severely |1.2.1 |c|| | 3 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 3 |
| Registration plate issues | 3 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| 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| | 2 |
| Brake master cylinder severely damaged |3.2.B1b| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Front Wheel bearing play so excessive that directional control is impaired |5.1.3 |a| |ii|| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Rear Footrest missing (6.2.12 (a)) | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Handlebar deformed |2.1.1b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Horn not working |1.7.3a| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Stop lamp remains on when the brakes are released | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle unit not secure to bars (6.2.7 (a) (ii)) | 1 |
| Shock absorber has a serious fluid leak both fork seals (5.3.2 (b)) | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Front Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Footrest missing |6.2.1a| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Headlamp missing |4.1.1 |a| |ii|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Brake lever has insufficient reserve travel front brake (1.1.2 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Offside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Lower Suspension component pin or bush excessively worn linkage |5.3.4 |a| |i|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Front shock absorber seal failed and leaking oil Both |2.3.3| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen Beam completely wrong |4.1.2 |a|| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Throttle operating incorrectly Does not return |6.2.1f| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level |1.1.10 |d| |ii|| | 1 |
| Offside Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Offside Front Brake master cylinder leaking sight glass broken (1.1.10 (b) (ii)) | 1 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Central Rear Suspension arm damaged and seriously weakened rear suspension seized solid (5.3.3 (b) (i)) | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Nearside Front Footrest insecure Split pin missing. |6.2.12 |a|| | 1 |
| Front Brake hose excessively kinked hose from reservoir to master cylinder |3.2.B3a| | 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 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Fuel cap missing (6.1.3 (b) (i)) | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Fuel tank leaking (6.1.3 (b) (i)) | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Stop lamp not working rear brake pedal (4.3.1 (a) (ii)) | 1 |
| Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Shock absorber insecurely attached off side shock asborber twists round in lower mount (5.3.2 (a) (i)) | 1 |
| Headlamp reflector missing (4.1.1 (b) (ii)) | 1 |
| Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Drive chain sprocket so loose it is likely to fail 2 bolts missing (6.1.7 (c) (ii)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected loose (2.2.2 (f) (ii)) | 1 |
| Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Front Wheel more than one fixing missing (5.2.1 (a) (ii)) | 1 |
| Front Stop lamp not working comes on then goes out (4.3.1 (a) (ii)) | 1 |
| Front Shock absorber has negligible damping effect seized or incorrectly adjusted (5.3.2 (b)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Brake master cylinder leaking level window perished (1.1.10 (b) (ii)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam switch faulty |4.1.3 |b|| | 1 |
| Fuel system component leaking excessively or a risk of fire |6.1.3 |b| |ii|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Front Upper Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front control (4.3.2 (a) (iii)) | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on NO PLATE LIGHT INOPERATIVE |1.1.3a| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Steering operation impeded by a fairing |2.1.4 |e|| | 1 |
| Nearside Front Footrest insecure |6.2.12 |a|| | 1 |
| Fuel tank insecure |6.1.3 |a| |i|| | 1 |
| Nearside Front Fuel pipe insecure under tank |6.1.3 |a| |i|| | 1 |
| Suspension component mounting has an unsafe modification rear wheel rubbing on arm |5.3.3 |c| |i|| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Front Brake hose excessively stretched (1.1.12 (b) (ii)) | 1 |
| Offside Front Brake hose excessively stretched (1.1.12 (b) (ii)) | 1 |
| Front Brake master cylinder defective but brake still operating reservoir pipe kinked (1.1.10 (b) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Brake hose excessively stretched |1.1.12 |b| |ii|| | 1 |
| Rear Pillion seat insecure |6.2.6 |a| |ii|| | 1 |
| Nearside Rear Footrest missing Passenger |6.2.12 |a|| | 1 |
| Rear Suspension rod pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Wheel more than one fixing loose (5.2.1 (a) (ii)) | 1 |
| Front Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride footrest pin split pin missing |6.2.1h| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Central Rear Lower Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Central Front Steering headbearing has excessive free play grease and adjust |2.2.2| | 1 |
| Nearside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Upper Rear mono-shock pivot excessively worn Top monoshock bush. |2.4.B.4| | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure top yoke nut loose (6.1.1 (b) (i)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Suspension component modified so the suspension is inoperative shock absorber (5.3.3 (c) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Headlamp light source and lamp not compatible l.e.d bulb. (4.1.4 (c)) | 1 |
| Roller brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Motorcycle structure adversely modified frame mount top engine and lower engine mount bolt loose |6.1.1b| | 1 |
| Offside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Offside Front Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Lower Rear suspension bush has excessive free play linkage |2.4.A2a|i|| | 1 |
| Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Footrest missing pillion |6.2.1a| | 1 |
| Brake master cylinder leaking sight glass cracked |1.1.10 |b| |ii|| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Fuel pipe leaking (6.1.3 (b) (i)) | 1 |
| Offside Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Wheel spindle locking device ineffective (5.2.1 (d)) | 1 |
| Drive chain excessively tight, so that it is likely to fail |6.1.7 |k| |ii|| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Throttle operating incorrectly Sticking |6.2.1f| | 1 |
| Rear Brake component leaking fluid Master Cylinder |3.2.B4| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |