| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 25 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 18 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 18 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Registration plate issues | 15 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Horn not working (7.7 (a)) | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Horn not working |1.7.3a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Stop lamp not working from front brake (4.3.1 (a) (ii)) | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 2 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| 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| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls not working from front control (4.3.2 (a) (iii)) | 1 |
| Throttle operating incorrectly sticking and picking up revs when turning (6.2.7 (a) (i)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Steering control fouling between components which interferes with the free movement of the steering inner fairing catching on lower yoke |2.1.2a| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Offside Front Stop lamp switch with a delay in operation replaced switch (4.3.2 (a) (ii)) | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Offside Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Offside Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Brake hose stretched by steering movement |3.2.B3b| | 1 |
| Offside Front Rear reflector on motorcycle missing |1.4.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.5.1) | 1 |
| Offside Rear Direction indicator not working (1.5.1c) | 1 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Horn missing |1.7.1| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Brake hose excessively deteriorated | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls front switch missing (4.3.2 (a) (iii)) | 1 |
| Brake fluid reservoir fluid not visible no reservoir fitted on front brake (1.1.10 (d) (iii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Central Front Horn not working |7.7 |a| |ii|| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded Rear brake disc securing bolts fouling caliper bracket |3.2.A1h| | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Rear Brake performance unable to be tested Brake caliper not fitted in mounting correctly (1.2.1 (g)) | 1 |
| Front Valve stem seriously damaged perished (5.2.3 (j)) | 1 |
| Suspension attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Offside Front Upper Stop lamp not working front brake light switch not connected - re-connected to correct (4.3.1 (a) (ii)) | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Shock absorber has a serious fluid leak Fork leg (5.3.2 (b)) | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure mud guard (6.1.1 (b) (i)) | 1 |
| Offside Front Brake cylinder insecure bolt broken (1.1.16 (c) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Upper Rear mono-shock insecure |2.4.B.4| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Throttle operating incorrectly wont rev on full left lock |6.2.7 |a| |i|| | 1 |
| Stop lamp not working NOT WORKING FROM REAR BRAKE PEDAL |4.3.1 |a| |ii|| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect led bulbs fitted , no projected image (4.1.2 (c)) | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |