| Most common failures | No# failures |
|---|
| Drive chain excessively loose (6.1.7 (c) (i)) | 46 |
| Headlamp aim out of alignment | 31 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 20 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 16 |
| Rear reflector missing (4.8.2 (a) (ii)) | 15 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 12 |
| Registration plate lamp issues | 11 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 10 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 7 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 7 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 6 |
| Registration plate issues | 5 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 5 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 5 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 4 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 4 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 4 |
| Horn not working (7.7 (a)) | 4 |
| Rear Footrest missing (6.2.12 (a)) | 4 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 4 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 3 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 3 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 3 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Offside Rear Direction indicator missing (4.4.1 (a) (ii)) | 2 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 2 |
| Rear Brake caliper inadequately mounted and braking performance affected (1.1.16 (c) (ii)) | 2 |
| Central Rear Upper Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 2 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 2 |
| Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 2 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 2 |
| Offside Front Position lamp not working (4.2.1 (a)) | 2 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Drive chain excessively tight, so that it is likely to fail chain over tight with seized up links. (6.1.7 (k) (ii)) | 1 |
| Drive chain excessively tight, so that it is likely to fail very corroded (6.1.7 (k) (ii)) | 1 |
| Drive chain worn to excess Rivot connecting link (6.1.7 (c) (i)) | 1 |
| Drive chain worn to excess Chain & Sprockets worn (6.1.7 (c) (i)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling chain adjust marks far out of line (2.4 (a)) | 1 |
| Rear Brake rod insecure (1.1.15 (c)) | 1 |
| Offside Front Position lamp not working Side light (4.2.1 (a)) | 1 |
| Nearside Rear Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Clutch lever positioned so it cannot be readily operated (6.2.7 (b)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Offside Rear Lower Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Rear Stop lamp not working control 2 rear brake (4.3.1 (a) (ii)) | 1 |
| Offside Brake pedal is positioned so that the brake cannot be readily applied foot rest bent (1.1.2 (d)) | 1 |
| Front All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Rear Brake lever pivot excessively tight (1.1.1 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Direction indicator light intensity significantly reduced (4.4.3 (a)) | 1 |
| Central Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Offside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Front Forks in such a condition that steering control is adversely affected Front Forks badly twisted (2.2.2 (d) (ii)) | 1 |
| Offside Front Brake component insecure Front brake hose not secure and catching front wheel (1.1.21 (c)) | 1 |
| Front Wheel alignment incorrect which adversely affects the steering Wheel alignment incorrect due to twisted forks (2.4 (a)) | 1 |
| Offside Exhaust has a major leak of exhaust gases Exhaust system has been modified/damaged and is excessively leaking exhaust gas (6.1.2 (a)) | 1 |
| Offside Front Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Steering headbearing excessively stiff or notchy stiff (2.2.2 (f) (i)) | 1 |
| Rear Brake component insecure rear brake torque arm to back plate bolt loose (1.1.21 (c)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort Rear disc warped, wheel mating surface corroded (1.2.1 (e)) | 1 |
| Rear Drive chain worn to excess chain dry rusty and has tight links and a tight spot in chain run (6.1.7 (c) (i)) | 1 |
| Fuel cap ineffective unable to open cap to inspect seal to tank and for fuel seal (6.1.3 (b) (i)) | 1 |
| Throttle operating incorrectly Throttle fails to return on R/H lock (6.2.7 (a) (i)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Brake rod has restricted free movement (1.1.15 (e)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Footrest insecure (6.2.12 (a)) | 1 |
| Front Stop lamp not working Missing front brake light switch. (4.3.1 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected does not return to idle (6.2.7 (a) (ii)) | 1 |
| Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Front Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Offside Front Footrest missing (6.2.12 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Footrest missing Rear foot rests missing (6.2.12 (a)) | 1 |
| Rear Brake master cylinder insecure (1.1.10 (c)) | 1 |
| Upper All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Footrest insecure (6.2.12 (a)) | 1 |
| Nearside Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Front Direction indicator adversely affected by the operation of another lamp both sides (4.4.3 (b)) | 1 |
| Drive chain sprocket excessively loose damper rubbers excessively worn (6.1.7 (c) (i)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Steering headbearing excessively stiff or notchy NOTCHY WHEEL RAISED (2.2.2 (f) (i)) | 1 |
| Rear Lower Brake component insecure torque arm locking device missing (1.1.21 (c)) | 1 |
| Rear Suspension arm ball joint excessively worn both trailing arm bushes (5.3.4 (a) (i)) | 1 |
| Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure fender (6.1.1 (b) (i)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Forks excessively deformed Steering twisted. (2.2.2 (d) (i)) | 1 |
| Rear Brake rod insecure Bolt too short and just pushed into lever arm. Do not ride. (1.1.15 (c)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Rear adjusted (4.3.2 (a) (iii)) | 1 |
| Central Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Nearside Front Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Rear Drive chain horseshoe locking device incorrectly fitted drive chain locking device horseshoe incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Nearside Front Clutch lever positioned so it cannot be readily operated (6.2.7 (b)) | 1 |
| Drive chain horseshoe locking device likely to become detached missing (6.1.7 (j) (ii)) | 1 |
| Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Rear Wheel hub excessively worn REAR WHEEL BEARINGS REPLACED (5.2.1 (b) (i)) | 1 |
| Position lamp not working rear light (4.2.1 (a)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Nearside Front Direction indicator obviously incorrectly positioned broken (4.4.3 (a)) | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Rear Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Direction indicator likely to become detached rear righthand (4.4.1 (c) (ii)) | 1 |
| Rear Footrest missing both (6.2.12 (a)) | 1 |
| Central Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake pivot has restricted free movement (1.1.15 (e)) | 1 |
| Central Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp not working Switch Adjusted (4.3.1 (a) (ii)) | 1 |