| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Steering headbearing has excessive free play |2.2.2| | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Horn not working |1.7.3a| | 7 |
| Brake hose damaged | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Registration plate lamp issues | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 4 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Registration plate issues | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Front suspension assembly component excessively corroded. |2.3.1| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| 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 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Central Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Offside Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Front Direction indicators not working and rear |1.5.1c| | 1 |
| Rear Upper Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Offside Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Offside Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Centre Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Front Front suspension assembly component loose |2.3.1| | 1 |
| Offside Rear Exhaust mounting missing |7.1.1c| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies brake applied |1.3.1a| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Indicator switch defective STICKING SLIGHTLY |1.5.4| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear wheel rotation likely to be impeded mudguard insecure |6.2.1b| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Nearside Rear Upper Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear lever |1.3.1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp light intensity severely reduced dipped beam bad earth (4.1.4 (a)) | 1 |
| Rear Brake hose excessively damaged (1.1.12 (b) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies via rear brake |1.3.1a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Headlamp aim beam image kick up to the offside both front |1.6| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Fuel system component insecure air box |7.2.1b| | 1 |
| Offside Rear Rear suspension has an inadequate repair of a load bearing member or its supporting structure. lower swinging arm bolt loose and bolts missing |2.4.A.2d| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. left hand |2.3.6b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. right hand |2.3.6b| | 1 |
| Throttle operating incorrectly not returning (6.2.7 (a) (i)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Rear Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Offside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Centre Rear Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Centre Upper Front suspension assembly component loose handle bars loose between bars and front suspension |2.3.1| | 1 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake hose excessively twisted not supported (1.1.12 (b) (ii)) | 1 |
| Brake hose excessively deteriorated | 1 |
| Offside Rear suspension component loose |2.4.A.1a| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Stop lamp remains on when the brake is released from front brake |1.3.1e| | 1 |
| Stop lamp does not illuminate immediately a brake applies from rear brake |1.3.1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Steering headbearing has excessive free play handlebars loose |2.2.2| | 1 |
| Vehicle identification number not permanently displayed |6.3.5a| | 1 |
| Centre Motorcycle structure cracked stand broken |6.1.1a| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Stop lamp not working with front or rear levers |4.3.1 |a| |ii|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system exhaust hanger strap snapped |7.1.1.c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil fork seal blown |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil fork seal blown |2.3.3| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear Brake pipe at imminent risk of failure or fracture |1.1.11 |a|| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Central Front Front position lamp obscured more than 50% |1.1.1d| | 1 |
| Nearside Dipswitch does not operate immediately when selected on dipped beam operates main beam (4.1.3 (b)) | 1 |
| Exhaust has a major leak of exhaust gases flange bolt missing (6.1.2 (a)) | 1 |
| Offside Rear Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Rear Brake caliper inadequately mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies lever |1.3.1a| | 1 |
| Offside Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Brake disc|s| is excessively distorted rear |3.2.A1m| | 1 |
| Front shock absorber seal failed and leaking oil left hand |2.3.3| | 1 |
| Front shock absorber seal failed and leaking oil right hand |2.3.3| | 1 |
| Offside Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Shock absorber has a serious fluid leak BOTH FRONT |5.3.2 |b|| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Upper Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Engine mounting/bracket excessively loose |6.1.8 |a| |ii|| | 1 |
| Nearside Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Front Brake component damaged and seriously reduced in strength brake hose chaffed through |3.2.A1| | 1 |
| Front Front suspension has inadequate damping effect. stanchions excessively corroded |2.3.6c| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear suspension bush has excessive free play engine mounting bushes |2.4.A2a|i|| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Front Inner Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies rear brake lever does not illuminate brake lamp |1.3.1a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on number plate lamp not working |1.1.3a| | 1 |
| Nearside Front Front suspension assembly component excessively corroded. both forks stensions heavily corroded |2.3.1| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Brake lever mounting insecure |3.1.2a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Brake hose fouling |3.2.B3b| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Upper Steering headbearing has excessive free play play |2.2.2| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Central Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Central Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Stop lamp likely to become detached |4.3.1 |c| |ii|| | 1 |