| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 122 |
| Registration plate lamp issues | 36 |
| Rear reflector missing (4.8.2 (a) (ii)) | 34 |
| Horn not working (7.7 (a)) | 23 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 21 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 21 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 16 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 12 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 11 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 8 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 7 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 7 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 6 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 6 |
| Front Horn not working (7.7 (a)) | 5 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 5 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 4 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 4 |
| 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)) | 4 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 3 |
| Registration plate issues | 3 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 3 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 3 |
| Rear Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Exhaust silencer insecure (8.1.1 (b) (i)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Rear Brake disc contaminated (1.1.14 (b)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| All position lamps not working (4.2.1 (a)) | 2 |
| Offside Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Nearside Rear Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 2 |
| Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 2 |
| Front Brake fluid not visible (1.1.10 (d) (iii)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Brake pedal is bent and the brake cannot be readily applied (1.1.2 (d)) | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock bar pulled straight (2.1.4 (b)) | 1 |
| Rear reflector missing fit reflector (4.8.2 (a) (ii)) | 1 |
| Front Brake component insecure Front brake master cylinder (1.1.21 (c)) | 1 |
| Throttle operating incorrectly Right hand lock (6.2.7 (a) (i)) | 1 |
| Central Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Central Rear Lower Suspension rod pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel need adjusting (1.1.2 (a)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Brake grabbing severely (1.2.1 (c)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Fork yoke in such a condition that steering control is adversely affected Ignition barrel insecure. When falls out of place it causes steering issues (2.2.2 (d) (ii)) | 1 |
| Brake master cylinder reservoir cap missing (1.1.10 (e)) | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Stop lamp not working off the foot brake (4.3.1 (a) (ii)) | 1 |
| Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Rear Brake cylinder operating mechanism has excessive travel (1.1.16 (e) (i)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear reflector missing l plate covering reflector (4.8.2 (a) (ii)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Central Front Horn not working (7.7 (a)) | 1 |
| Brake lever is so short that the brake cannot be readily applied SNAPED OFF WITH SHARP EDGES (1.1.2 (d)) | 1 |
| Brake pedal is bent and the brake cannot be readily applied LEAVER BENT AROUND (1.1.2 (d)) | 1 |
| Clutch lever shortened so it cannot be readily operated SNAPED WITH SHARP EDGES (6.2.7 (b)) | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Front Lower Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced (6.1.1 (b) (ii)) | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working from rear brake control pedal (4.3.1 (a) (ii)) | 1 |
| Rear reflector missing covered by l plate (4.8.2 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Front Steering headbearing excessively stiff or notchy STIFF (2.2.2 (f) (i)) | 1 |
| Rear Stop lamp not working wire has rotted on rear brake light switch (4.3.1 (a) (ii)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Throttle operating incorrectly when steering lock to lock (6.2.7 (a) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Offside Front Brake indicates excessive fluctuation of brake effort Right hand disc warped (1.2.1 (e)) | 1 |
| Shock absorber has an excessively worn bush Rear shock absorber lower bush. (5.3.2 (c)) | 1 |
| Rear reflector missing Rear reflector obscured by "L" plate. (4.8.2 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak Offside front fork seal leaking excessively. (5.3.2 (b)) | 1 |
| Handlebar mounting insecure clutch lever perch loose (2.2.1 (a) (i)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Nearside Steering operation fouling on the fuel tank or bodywork on full lock on left lock (2.1.4 (b)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Rear reflector defective or damaged by more than 50% of the reflecting surface (4.8.1 (a) (ii)) | 1 |
| Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Steering operation restricted in free movement from lock to lock ignition switch catching frame when steering left (2.1.4 (c)) | 1 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front All position lamps not working (4.2.1 (a)) | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Offside Front Brake fluid reservoir fluid not visible sight glass damaged (1.1.10 (d) (iii)) | 1 |
| Nearside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Handlebar restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Nearside Front Upper Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Offside Front Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Offside Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Stop lamp not working from the rear foot brake (4.3.1 (a) (ii)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Nearside Rear Outer Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Fuel cap ineffective seal perished (6.1.3 (b) (i)) | 1 |
| Brake pedal pivot excessively tight (1.1.1 (a)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Offside Front Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Nearside Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Offside Rear Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Offside Rear 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 |
| Front Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Clutch lever shortened so it cannot be readily operated (6.2.7 (b)) | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Rear Stop lamp not working front stop light (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator light intensity significantly reduced (4.4.3 (a)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls rear brake switch (4.3.2 (a) (iii)) | 1 |
| Rear Brake pedal has insufficient reserve travel pedal hits panel (1.1.2 (a)) | 1 |
| Front Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Rear 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 Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls brake pedal (4.3.2 (a) (iii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling Chain adjusters incorrect (2.4 (a)) | 1 |
| Exhaust system insecure Securing mount broken (6.1.2 (a)) | 1 |
| Offside Position lamp switch insecure (4.2.2 (b)) | 1 |
| Rear Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition no baffle fitted (8.1.1 (a)) | 1 |
| Front Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Horn not working (7.7 (a)) | 1 |
| Offside Rear Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Offside Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Suspension arm pin or bush excessively worn swinging arm (5.3.4 (a) (i)) | 1 |
| Nearside Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Nearside Handlebar mounting so insecure that steering is adversely affected (2.2.1 (a) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Central Rear Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Wheel hub damaged to the extent that wheel security is adversely affected ns and os spacers missing (5.2.1 (b) (ii)) | 1 |
| Offside Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Lower Shock absorber has an excessively worn bush LINKAGE BEARING/BUSH (5.3.2 (c)) | 1 |
| Offside Front Inner Shock absorber has a serious fluid leak O/S forks seal leaking (5.3.2 (b)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Drive chain worn to excess tight spots (6.1.7 (c) (i)) | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment no reserve travel (1.1.15 (f)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear reflector missing covered by L plate (4.8.2 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Stop lamp switch with a delay in operation foot brake (4.3.2 (a) (ii)) | 1 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling drive chain adjustment incorrect (2.4 (a)) | 1 |
| Front Shock absorber has a serious fluid leak both (5.3.2 (b)) | 1 |
| Rear Brake disc significantly and obviously worn Buckled (1.1.14 (a) (i)) | 1 |
| Offside Rear Direction indicator light intensity significantly reduced (4.4.3 (a)) | 1 |
| Exhaust has a major leak of exhaust gases hole in silencer (6.1.2 (a)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort control 2,front (1.2.1 (e)) | 1 |
| Offside Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Front Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Offside Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Front Handlebar restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Nearside Front Horn not working broken wire (7.7 (a)) | 1 |
| Offside Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Front Footrest missing (6.2.12 (a)) | 1 |
| Front Brake lever so insecure that the brake cannot be readily applied (1.1.2 (e) (ii)) | 1 |
| Nearside Handlebar restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Headlamp light intensity severely reduced Dip beam (4.1.4 (a)) | 1 |
| Rear Suspension arm pin or bush excessively worn All rear linkage bushes and bearing worn (5.3.4 (a) (i)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls rear brake control switch broken (4.3.2 (a) (iii)) | 1 |
| Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Central Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Nearside Rear Outer Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Brake performance unable to be tested (1.2.1 (g)) | 1 |
| Drive chain so loose it is likely to fail plus tight spots (6.1.7 (c) (ii)) | 1 |
| Front Stop lamp not working brake light switch (4.3.1 (a) (ii)) | 1 |
| Front Brake excessively binding brake (1.2.1 (f)) | 1 |
| Offside Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Shock absorber has a serious fluid leak Both front fork seals leaking (5.3.2 (b)) | 1 |