| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 45 |
| Registration plate issues | 41 |
| Rear reflector missing (4.8.2 (a) (ii)) | 24 |
| Rear reflector missing |4.8.2 |a| |ii|| | 15 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Registration plate lamp issues | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 5 |
| Stop lamp remains on when the brakes are released | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 4 |
| 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)) | 4 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| All direction indicators missing (4.4.1 (a) (ii)) | 3 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Offside Rear Brake cylinder operating mechanism has excessive travel |1.1.16 |e| |i|| | 1 |
| Nearside Rear Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Chain guard fouling another component |6.2.1c| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen to o/s (4.1.2 (a)) | 1 |
| Central Front Upper Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Upper Brake hose connection leaking (1.1.12 (c)) | 1 |
| Stop lamp does not illuminate immediately a brake applies not working off both front or rear |1.3.1a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Rear Brake pedal pivot has excessive free play (1.1.1 (b)) | 1 |
| Brake performance not tested May cause damage (1.2.1 (g)) | 1 |
| Offside Footrest missing (6.2.12 (a)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected sticks in all positions |6.2.7 |a| |ii|| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected nut loose (5.2.1 (c) (ii)) | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain excessively loose incorrectly fitted over chain gaurd |6.1.7 |c| |i|| | 1 |
| Front Position lamp not working Side light |4.2.1 |a|| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen Poor beam image. (4.1.2 (a)) | 1 |
| Offside Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak right hand fork leaking badly |5.3.2 |b|| | 1 |
| Rear Position lamp not working rear light not working |4.2.1 |a|| | 1 |
| Headlamp not working on dipped beam Unable to check aim. (4.1.1 (a) (ii)) | 1 |
| Rear Stop lamp not working Brake pedal operation (4.3.1 (a) (ii)) | 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 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Stop lamp not working return spring missing (4.3.1 (a) (ii)) | 1 |
| Offside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Central Front Upper Horn not working (7.7 (a)) | 1 |
| Nearside Handlebar handgrip not secure to handlebars. l/h grip loose |2.1.1c| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Offside Front Brake hose leaking (1.1.12 (c)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies when front brake applied |1.3.1a| | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Offside Front Wheel excessively distorted |5.2.2 |c| |i|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Front Wheel has an excessively distorted bead rim. buckeled |4.2.2| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Stop lamp missing |4.3.1 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Position lamp not working front and rear (4.2.1 (a)) | 1 |
| Shock absorber has a serious fluid leak left and right forks leaking (5.3.2 (b)) | 1 |
| Nearside Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Brake pedal has insufficient reserve travel NO BRAKE AT ALL ON REAR (1.1.2 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Drive chain sprocket excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies brake light switch spring detached |1.3.1a| | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Brake fluid contaminated (1.8 (a)) | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Front Headlamp not working on main beam NO MAIN BEAM |4.1.1 |a| |ii|| | 1 |
| Horn not working NOT FITTED |7.7 |a| |ii|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Chain guard insecure |6.1.7 |i|| | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Central Rear Headlamp reflector missing |4.1.1 |b| |ii|| | 1 |
| Brake performance not tested rear brake not working |1.2.1 |g|| | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Central Rear Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Front Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Nearside Front Chain guard insecure front sprocket cover missing |6.1.7 |i|| | 1 |
| Offside Rear Exhaust markings indicating not for road use or similar wording silencer |6.1.2 |c|| | 1 |