| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 24 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Headlamp aim not tested (4.1.2 (b)) | 3 |
| Front Position lamp not working |4.2.1 |a|| | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 2 |
| Registration plate issues | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 2 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment brake |1.1.15 |f|| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Exhaust system insecure |6.1.2 |a|| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Drive chain sprocket excessively loose |6.1.7 |c| |i|| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Rear sprocket bolts loose |6.2.1h| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Footrest missing |6.2.1a| | 1 |
| Fuel cap mounting flange/sealing method defective |Rusty| |7.2.2c| | 1 |
| Steering headbearing has excessive free play siezed |2.2.2| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Footrest missing |6.2.12 |a|| | 1 |
| Front Headlamp insecure |4.1.1 |c|| | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Handlebar excessively deformed |2.2.1 |c| |i|| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies control |1.3.1a| | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp poor earth (4.3.3 (b)) | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake caliper insecure Loose on sliders (1.1.16 (c) (i)) | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake rod has restricted free movement fouling on exhuast (1.1.15 (e)) | 1 |
| Rear Brake lever pivot excessively worn loose (1.1.1 (b)) | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear reflector defective or damaged by more than 50% of the reflecting surface |4.8.1 |a| |ii|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Brake caliper|s| insecure Pad sliding pin missing |3.2.A1j| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Offside Front Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Stop lamp not working from front or rear brake control (4.3.1 (a) (ii)) | 1 |
| Central Front Upper Fork yoke in such a condition that steering control is adversely affected yoke twisted (2.2.2 (d) (ii)) | 1 |
| Headlamp not working on dipped beam High beam on in dipped postion, no dip. (4.1.1 (a) (ii)) | 1 |
| Lower All position lamps not working dip beam (4.2.1 (a)) | 1 |
| Nearside Rear Lower Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Position lamp not working tail light (4.2.1 (a)) | 1 |
| Drive chain sprocket excessively loose all 4 nuts loose (6.1.7 (c) (i)) | 1 |
| Front Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake rod insecure |1.1.15 |c|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock |2.1.4 |a|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Horn not working |1.7.3a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Central Front Headlamp insecure |4.1.1 |c|| | 1 |
| Central Rear Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Offside Rear Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake grabbing severely |1.2.1 |c|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Drive chain sprocket so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen kicks wrong way |4.1.2 |a|| | 1 |
| Stop lamp not working front brake |4.3.1 |a| |ii|| | 1 |
| Position lamp showing white light to the rear lens broken |4.2.3 |a| |ii|| | 1 |
| Rear Brake pedal pivot excessively worn |1.1.1 |b|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp not working both front and back |4.3.1 |a| |ii|| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Stop lamp not working (hand) (4.3.1 (a) (ii)) | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Rear Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected fouling on exhaust (1.1.2 (b) (ii)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Brake master cylinder defective but brake still operating sight window badly cracked (1.1.10 (b) (i)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Footrest insecure Foot rest seized in upright position (6.2.12 (a)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Front Suspension component modified so the suspension is inoperative (5.3.3 (c) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Front Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working With rear brake control |4.3.1 |a| |ii|| | 1 |
| Stop lamp not working Rear control |4.3.1 |a| |ii|| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied Catching exhaust |1.1.2 |d|| | 1 |
| Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level |1.1.10 |d| |ii|| | 1 |