| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Brake hose excessively deteriorated | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 4 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp aim not tested (4.1.2 (b)) | 3 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Front Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies brake lever |1.3.1a| | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Nearside Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Nearside Front Direction indicator incorrect colour white not yellow (4.4.3 (a)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Central Rear Upper Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Shock absorber has negligible damping effect no damping on rear |5.3.2 |b|| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Front Brake master cylinder defective but brake still operating |1.1.10 |b| |i|| | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Stop lamp not working when applying front brake control (4.3.1 (a) (ii)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Nearside Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Headlamp light source and lamp not compatible Bulb not fitted correctly. (4.1.4 (c)) | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort low effort |3.3.A1c| | 1 |
| Central Front Upper Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Nearside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Front All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Shock absorber has a serious fluid leak both |5.3.2 |b|| | 1 |
| Offside Front Forks excessively corroded |2.2.2 |d| |i|| | 1 |
| Offside Rear All direction indicators incorrect colour |4.4.3 |a|| | 1 |
| Nearside Rear All direction indicators incorrect colour |4.4.3 |a|| | 1 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Rear Motorcycle structure joining/attachment plate or fastening insecure airbox broken bolt (6.1.1 (b) (i)) | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Stop lamp does not emit a steady light not working |1.3.1b| | 1 |
| Brake lever has abnormal movement of levers indicating excessive wear or maladjustment rear brake (1.1.15 (f)) | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Offside Rear Exhaust system insecure exhaust mount/rear arm bolt missing (6.1.2 (a)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Brake hose damaged and likely to fail |1.1.12 |a|| | 1 |
| Stop lamp not working with front lever |4.3.1 |a| |ii|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Brake pipe excessively corroded | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride offside handlebar switch |6.2.1h| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Fuel cap ineffective seal damaged |6.1.3 |b| |i|| | 1 |
| Stop lamp not working Front brake switch failure |4.3.1 |a| |ii|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies From front brake |1.3.1a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Steering headbearing excessively stiff or notchy Stiff (2.2.2 (f) (i)) | 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 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Wheel spindle loose |5.2.1 |c| |i|| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Direction indicators flashing more than 120 times per minute all |1.5.1c| | 1 |
| Rear suspension bush has excessive free play rear shock absorber top bush |2.4.A2a|i|| | 1 |
| Rear suspension bush has excessive free play engine/swinging arm excess play |2.4.A2a|i|| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Rear suspension bush has excessive free play nearside upper engine mounting |2.4.A2a|i|| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front shock absorber seal failed and leaking oil both fork seals leaking |2.3.3| | 1 |
| Headlamp incorrect colour deteriated |1.2.1| | 1 |
| Brake master cylinder leaking Sight glass |1.1.10 |b| |ii|| | 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 |
| Position lamp not working |4.2.1 |a|| | 1 |
| Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Brake fluid reservoir severely damaged Sight glass broke |3.2.B1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies front control |1.3.1a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil fork seal |2.3.3| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Centre Front Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Rear Brake lever has inadequate reserve travel application |3.1.3b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Headlamp insecure Body work damaged. (4.1.1 (c)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Brake master cylinder leaking Sight glass (1.1.10 (b) (ii)) | 1 |
| Front Brake fluid not visible (1.1.10 (d) (iii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling Forks misaligned (2.4 (a)) | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Rear Wheel fixing missing (single fixing) (5.2.1 (a) (ii)) | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Brake lining|s| less than 1.0 mm thick |1.1.13 |a|| | 1 |
| Rear Brake lever not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Front Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Brake lever insecure |3.1.2a| | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen bulb in incorrectly |1.6.B.1| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front mudguard insecure |2.3.7| | 1 |
| Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Front Valve stem seriously damaged front and rear valves both damaged (5.2.3 (j)) | 1 |
| Front Headlamp aim not tested not tested insecure (4.1.2 (b)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Brake hose damaged | 1 |