| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 72 |
| Headlamp aim out of alignment | 34 |
| Registration plate issues | 29 |
| Rear reflector on motorcycle missing |1.4.1| | 19 |
| Rear reflector missing (4.8.2 (a) (ii)) | 13 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 9 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 9 |
| Rear reflector missing |4.8.2 |a| |ii|| | 7 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 6 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 5 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 4 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 4 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Horn not working |1.7.3a| | 3 |
| Offside Rear Footrest missing (6.2.12 (a)) | 3 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Rear Position lamp not working |4.2.1 |a|| | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 3 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 3 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Front Brake fluid contaminated (1.8 (a)) | 2 |
| Rear Brake fluid contaminated (1.8 (a)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Direction indicator obviously incorrectly positioned space between rear n/s + o/s indicator too small (4.4.3 (a)) | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Centre Upper Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Rear Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Nearside Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Nearside Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Offside Front Brake caliper inadequately mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Brake hose connection leaking (1.1.12 (c)) | 1 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front Brake fluid contaminated |1.8 |a|| | 1 |
| Rear Brake fluid contaminated |1.8 |a|| | 1 |
| Rear Brake cylinder has no reserve travel and braking performance affected |1.1.16 |e| |ii|| | 1 |
| Offside Front Motorcycle structure cracked rider footrest |6.1.1a| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Nearside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Front Brake cylinder operating mechanism has excessive travel |1.1.16 |e| |i|| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Brake effort inadequate at a wheel very spongy (1.2.1 (a) (i)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Lower Footrest insecure Securing clip missing |6.2.12 |a|| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake lining(s) incorrectly mounted de bonded from backing plate (1.1.13 (c)) | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Direction indicator not working rear right hand indicator not working (4.4.1 (a) (ii)) | 1 |
| Drive chain excessively loose adjust |6.1.7 |c| |i|| | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Front Brake master cylinder leaking Reservoir cap |1.1.10 |b| |ii|| | 1 |
| Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort no rear brake pedal , linked brakes so deem to be dangerous |3.3.A1c| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Stop lamp not working switch faulty |4.3.1 |a| |ii|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Front Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Front Suspension component pin or bush excessively worn Fork slider bush worn |5.3.4 |a| |i|| | 1 |
| Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Drive chain worn to excess seized links not seating in sprockets correctly (6.1.7 (c) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel rear brake not holding brake pressure (1.1.2 (a)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Exhaust has a major leak of exhaust gases rear cylinder (6.1.2 (a)) | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear Brake lagging in operation rear brake requires pumping up to engage |1.2.1 |d|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort 30kg deflection |3.3.A1d| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake caliper operating mechanism has excessive travel Rear brake pedal has excessive reserve travel. (1.1.16 (e) (i)) | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Brake performance not tested |3.3| | 1 |
| Exhaust markings indicating not for road use or similar wording |6.1.2 |c|| | 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 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Headlamp aim not tested |4.1.2 |b|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Hydraulic brake control feels spongy has inadequate feel |3.1.4a| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |