| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 28 |
| Headlamp aim out of alignment | 24 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 23 |
| Front Brake excessively binding (1.2.1 (f)) | 20 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 15 |
| Rear reflector missing (4.8.2 (a) (ii)) | 12 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 11 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 11 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 11 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 10 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 9 |
| Rear Brake excessively binding (1.2.1 (f)) | 8 |
| Stop lamp remains on when the brakes are released | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 7 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 7 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 6 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 6 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 5 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 5 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 5 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 4 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 4 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 4 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 4 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 4 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 4 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 4 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 3 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 3 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 3 |
| Registration plate issues | 3 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Brake disc contaminated (1.1.14 (b)) | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 2 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 2 |
| Offside Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 2 |
| Rear Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear Brake pedal anti-slip provision missing (1.1.2 (c)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 2 |
| Front Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 2 |
| Offside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 2 |
| Rear Brake lever pivot excessively tight (1.1.1 (a)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Nearside Rear Suspension arm pin or bush excessively worn Swingarm has excessive side to side play (5.3.4 (a) (i)) | 1 |
| Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Nearside Shock absorber has a serious fluid leak N/S fork seal leaking (5.3.2 (b)) | 1 |
| Drive chain worn to excess Drive chain worn excessivley and loose (6.1.7 (c) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Rear brake switch inoperative (4.3.2 (a) (iii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (FORK SEAL) (5.3.2 (b)) | 1 |
| Nearside Front Brake excessively binding (1.2.1 (f)) | 1 |
| Central Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Central Rear Exhaust system insecure (6.1.2 (a)) | 1 |
| Nearside Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Central Front Upper Horn not working (7.7 (a)) | 1 |
| Rear Suspension attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Suspension arm pin or bush excessively worn swingarm pivot has excessive play (5.3.4 (a) (i)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Offside Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Brake disc contaminated oil (1.1.14 (b)) | 1 |
| Nearside Steering operation fouling on the fuel tank or bodywork on full lock steering lock stop bent (2.1.4 (b)) | 1 |
| Throttle operating incorrectly revs up when you turn handlebars to the right (6.2.7 (a) (i)) | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Nearside Rear Drive chain excessively loose chain tightened on prs (6.1.7 (c) (i)) | 1 |
| Nearside Rear Wheel bearing play so excessive it is likely to break up sprocket carrier (5.1.3 (a) (ii)) | 1 |
| Rear Stop lamp not working Switch siezed (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working from rear brake (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls Rear brake light (4.3.2 (a) (iii)) | 1 |
| Rear Brake performance unable to be tested Brake seized (1.2.1 (g)) | 1 |
| Nearside Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Offside Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Shock absorber has negligible damping effect rear suspension seized has no movement from rear (5.3.2 (b)) | 1 |
| Front Brake excessively binding Front brake lever pivot lubricated. (1.2.1 (f)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Throttle operating incorrectly Has excessive movement before engine responds to input (6.2.7 (a) (i)) | 1 |
| Front Brake fluid contaminated Dark in colour (1.8 (a)) | 1 |
| Fuel tank 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 |
| Offside Rear Suspension component missing Rear shock absorber damage (5.3.3 (a) (ii)) | 1 |
| Rear Drive chain worn to excess likely to come of sprocket during riding (6.1.7 (c) (i)) | 1 |
| Stop lamp not working With front brake (4.3.1 (a) (ii)) | 1 |
| Front Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Front Stop lamp emits other than a steady red light BRAKE LIGHT NOT CONSISTENT (4.3.3 (a) (ii)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front brake lever (4.3.2 (a) (iii)) | 1 |
| Front Brake lever pivot has excessive free play (1.1.1 (b)) | 1 |
| Front Brake master cylinder insecure (1.1.10 (c)) | 1 |
| Headlamp light intensity severely reduced on high beam,the headlamp cuts when turning handle bars right (4.1.4 (a)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Front Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Stop lamp light intensity significantly reduced (4.3.3 (a) (ii)) | 1 |
| Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls switch (4.3.2 (a) (iii)) | 1 |
| Rear Brake pedal anti-slip provision loose (1.1.2 (c)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Stop lamp emits other than a steady red light Intermittent (4.3.3 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Not working from rear brake control (4.3.2 (a) (iii)) | 1 |
| Nearside Footrest insecure (6.2.12 (a)) | 1 |
| Stop lamp not working on control 1 (4.3.1 (a) (ii)) | 1 |
| Brake performance unable to be tested due too rear brake being stuck on (1.2.1 (g)) | 1 |
| Rear Brake excessively binding stuck on (1.2.1 (f)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Footrest missing x2 (6.2.12 (a)) | 1 |
| Rear Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Suspension component mounting modified so the suspension is inoperative (5.3.3 (c) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Not working off the rear brake (4.3.2 (a) (iii)) | 1 |
| Nearside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Rear Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Nearside Front Clutch lever bent so it cannot be readily operated (6.2.7 (b)) | 1 |
| Nearside Front Forks in such a condition that steering control is adversely affected forks top and bottom bearings (2.2.2 (d) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak both (5.3.2 (b)) | 1 |
| Nearside Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Front Shock absorber has negligible damping effect FORKS HAVE LITTLE TO NO MOVEMENT WHEN TRYING TO COMPRESS (5.3.2 (b)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 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 |
| Stop lamp does not illuminate by the operation of both brake controls Not operating with front brake. (4.3.2 (a) (iii)) | 1 |
| Rear Drive chain sprocket worn to excess Impossible to inspect front sprocket. (6.1.7 (c) (i)) | 1 |
| Nearside Front Wheel alignment incorrect which adversely affects the steering steering twisted (2.4 (a)) | 1 |
| Stop lamp not working rear system (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Nearside Rear Wheel fixing loose (single fixing) chain adjuster (5.2.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |