| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 86 |
| Rear reflector missing (4.8.2 (a) (ii)) | 27 |
| Registration plate lamp issues | 22 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 13 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 10 |
| Registration plate issues | 9 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Front Position lamp not working (4.2.1 (a)) | 6 |
| Rear reflector missing |4.8.2 |a| |ii|| | 6 |
| Horn not working (7.7 (a)) | 6 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 5 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 3 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 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 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| 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)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Offside 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 Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Front Position lamp not working side light (4.2.1 (a)) | 2 |
| Front Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 2 |
| Rear Suspension arm pin or bush excessively worn SWING ARM BUSHES WORN TO EXCESS (5.3.4 (a) (i)) | 1 |
| Nearside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Lower Suspension component pin or bush excessively worn Lower knuckle bushes worn to excess (5.3.4 (a) (i)) | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Offside Front Footrest insecure Pin retaining clip missing (6.2.12 (a)) | 1 |
| Drive chain horseshoe locking device likely to become detached |6.1.7 |j| |ii|| | 1 |
| Footrest missing Pillion (6.2.12 (a)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Rear Footrest missing Both (6.2.12 (a)) | 1 |
| Central Front Inner Horn not working horn connection / wires furred up stopping operation of horn - cleaned to fix (7.7 (a) (ii)) | 1 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Stop lamp with a multiple light source more than 1/2 not functioning (4.3.1 (a) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 1 |
| Rear Brake caliper leaking and braking performance affected (1.1.16 (b) (ii)) | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Brake performance not tested all brakes (1.2.1 (g)) | 1 |
| Nearside Rear Drive chain excessively loose Drive Chain Loose Adjusted On Test PRS (6.1.7 (c) (i)) | 1 |
| Offside Front Footrest insecure Foot Rest Loose Tightened On Test PRS (6.2.12 (a)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Offside Front Brake disc fractured damaged at edge of disc. (1.1.14 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak right hand fork leg leaking oil. (5.3.2 (b)) | 1 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Brake pedal is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Headlamp not working on main beam Lightbulb replaced (4.1.1 (a) (ii)) | 1 |
| Rear Footrest missing L/h and R/h rear footrests missing. (6.2.12 (a)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Offside Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Offside Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Offside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Front Brake caliper insecure Both (1.1.16 (c) (i)) | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Headlamp insecure Mounting / adjustment bolts loose. (4.1.1 (c)) | 1 |
| Rear Suspension arm pin or bush excessively worn swing arm bushes (5.3.4 (a) (i)) | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Offside Rear Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition race silencer fitted with no baffle (8.1.1 (a)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Brake lever pivot excessively tight |1.1.1 |a|| | 1 |
| Nearside Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Rear Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Drive chain worn to excess and has a very bad tight spot (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Nearside Front Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Offside Front Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Brake hose excessively twisted under headstock to calipers (1.1.12 (b) (ii)) | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Brake hose excessively deteriorated | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Front Position lamp not working PRS Bulb replaced (4.2.1 (a)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |