| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 65 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 43 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 16 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 12 |
| Front Brake excessively binding (1.2.1 (f)) | 11 |
| Registration plate lamp issues | 11 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 10 |
| Rear Position lamp not working (4.2.1 (a)) | 10 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 7 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 7 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 7 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 6 |
| Registration plate issues | 6 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 6 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 6 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 6 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 6 |
| Horn not working (7.7 (a)) | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 5 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 5 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 4 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 4 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Front Brake grabbing severely (1.2.1 (c)) | 3 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 3 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 3 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 3 |
| Front Brake fluid contaminated (1.8 (a)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Offside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 2 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 2 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 2 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Upper Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Front Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 2 |
| Nearside Rear Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Forks excessively deformed Inner legs bent (2.2.2 (d) (i)) | 1 |
| Drive chain excessively loose Also rusty (6.1.7 (c) (i)) | 1 |
| Exhaust silencer insecure Cover (8.1.1 (b) (i)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock on right hand lock, due to being bent (2.1.4 (b)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted Fitted backwards (6.1.7 (j) (i)) | 1 |
| Front Brake pivot has restricted free movement (1.1.15 (e)) | 1 |
| Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Front Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure front mudguard seriously damaged (6.1.1 (b) (i)) | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Rear Outer Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Central Front Lower Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Central Front Headlamp insecure (4.1.1 (c)) | 1 |
| Nearside Front Headlamp aim unable to be tested Not secure. (4.1.2 (b)) | 1 |
| Offside Front Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Central Rear Suspension component pin or bush excessively worn Excessive play in the swingingarm. (5.3.4 (a) (i)) | 1 |
| Offside Rear Wheel spindle locking device ineffective R/h chain adjuster incorrectly fitted. (5.2.1 (d)) | 1 |
| Central Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Central Rear Stop lamp not working Rear stop switch not working. (4.3.1 (a) (ii)) | 1 |
| Rear Drive chain sprocket excessively loose cush drive rubbers excessively worn (6.1.7 (c) (i)) | 1 |
| Nearside Rear Suspension arm damaged and seriously weakened (5.3.3 (b) (i)) | 1 |
| Chain guard insecure BOLT MISSING, CHAIN GUARD HITS DRIVE CHAIN (6.1.7 (i)) | 1 |
| Offside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Rear Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted Rotation incorrect (6.1.7 (j) (i)) | 1 |
| Rear Drive chain excessively tight chain too tight - PRS - adjust & retest (6.1.7 (k) (i)) | 1 |
| Rear Suspension attachment bracket/mounting insecure swing arm loose (5.3.3 (a) (i)) | 1 |
| Front Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Suspension arm pin or bush excessively worn swinging arm bushes (5.3.4 (a) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Footrest insecure (6.2.12 (a)) | 1 |
| Suspension attachment bracket/mounting insecure swinging arm (5.3.3 (a) (i)) | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Headlamp aim projected beam image obviously incorrect LED bulb fitted. (4.1.2 (c)) | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Drive chain worn to excess chain is dangerously worn (6.1.7 (c) (i)) | 1 |
| Offside Throttle control functioning such that safe operation of the motorcycle is adversely affected Throttle Sticking (6.2.7 (a) (ii)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Clutch lever positioned so it cannot be readily operated Hits Switch Gear (6.2.7 (b)) | 1 |
| Rear Drive chain sprocket worn to excess Cush Drive Rubbers (6.1.7 (c) (i)) | 1 |
| Front Brake lagging in operation (1.2.1 (d)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Brake rod insecure nut and split pin missing rear brake arm (1.1.15 (c)) | 1 |
| Forks excessively deformed Misaligned In Yoke (2.2.2 (d) (i)) | 1 |
| Drive chain excessively loose on full adjustment (6.1.7 (c) (i)) | 1 |
| Forks excessively deformed (2.2.2 (d) (i)) | 1 |
| Stop lamp not working CONTROL 1 AND 2 (4.3.1 (a) (ii)) | 1 |
| Offside Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Offside Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Nearside Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Clutch lever positioned so it cannot be readily operated CLUTCH LEVER BOLT BROKEN (6.2.7 (b)) | 1 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Shock absorber has a serious fluid leak front fork seals (5.3.2 (b)) | 1 |
| Central Rear Lower Wheel bearing has excessive play (5.1.3 (a) (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 |
| Offside Front Brake pedal is so short that the brake cannot be readily applied replaced lever (1.1.2 (d)) | 1 |
| Rear Brake rod insecure (1.1.15 (c)) | 1 |
| Rear Wheel hub excessively worn cush drive rubbers (5.2.1 (b) (i)) | 1 |
| Offside Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Wheel more than one fixing loose Both chain adjuster nuts loose (5.2.1 (a) (ii)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect after market bulb fitted not creating beam pattern (4.1.2 (c)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Handlebar 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 |
| Offside Rear Lower Brake effort inadequate at a wheel rear brake lever travel excessive PRS (1.2.1 (a) (i)) | 1 |
| Shock absorber has a serious fluid leak L/h fork seal leaking (5.3.2 (b)) | 1 |
| Drive chain worn to excess chain and sprocket (6.1.7 (c) (i)) | 1 |
| Brake component insecure reaction bracket nut loose, split pin missing (1.1.21 (c)) | 1 |
| Nearside Rear Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Handlebar deformed to the extent that steering is affected handlebars bent (2.2.1 (c) (ii)) | 1 |
| Drive chain sprocket so worn it is likely to fail front and rear sprockets worn (6.1.7 (c) (ii)) | 1 |
| Wheel bearing play so excessive it is likely to break up rear wheel bearings (5.1.3 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering forks and yoke misaligned (2.4 (a)) | 1 |
| Front Brake grabbing severely FRONT BRAKE MASTER CYLINDER NEEDS SERVICING (1.2.1 (c)) | 1 |
| Rear Wheel fractured (5.2.2 (a)) | 1 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Brake component insecure Tie bar wrongly assembled, missing split pin. (1.1.21 (c)) | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake excessively binding from rear brake application (linked) (1.2.1 (f)) | 1 |
| Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Nearside Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Front Brake effort inadequate at a wheel brake lever very spongey (1.2.1 (a) (i)) | 1 |
| Drive chain excessively tight chain on sprocket (6.1.7 (k) (i)) | 1 |
| Headlamp missing (4.1.1 (a) (ii)) | 1 |
| Front Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 1 |
| Shock absorber has a serious fluid leak left fork leg (5.3.2 (b)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Central Rear Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Nearside Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Central Rear Drive chain sprocket worn to excess cush rubber knock (6.1.7 (c) (i)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Nearside Front Upper Handlebar excessively deformed handle bent up on o/s down and back on n/s (2.2.1 (c) (i)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Clutch lever positioned so it cannot be readily operated (6.2.7 (b)) | 1 |
| Nearside Clutch lever bent so it cannot be readily operated (6.2.7 (b)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Rear Brake component insecure Torque-Arm (1.1.21 (c)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Front control u/s (4.3.2 (a) (iii)) | 1 |
| Roller brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |