| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 20 |
| Registration plate lamp issues | 11 |
| Registration plate issues | 8 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 4 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Stop lamp not working Front brake lever not working |4.3.1 |a| |ii|| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Stop lamp not working From front control |4.3.1 |a| |ii|| | 1 |
| Offside Indicator switch inoperative |4.4.2 |a| |ii|| | 1 |
| Offside Handlebar grip insecure to handlebar slips on bar causing sticking throttle |2.2.1 |d| |ii|| | 1 |
| Offside Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle tube loose and restricting throttle |6.2.7 |a| |ii|| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear All position lamps not working |4.2.1 |a|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Direction indicator flashing more than 120 times per minute both |1.5.1c| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front switch sticking |1.3.1a| | 1 |
| Front Position lamp not working dipped beam |4.2.1 |a|| | 1 |
| Front Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Steering movement excessively `notchy` with the wheel raised centre position |2.2.1b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected NOTCHY WHEEL RAISED |2.2.2 |f| |ii|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| All direction indicators adversely affected by the operation of another lamp |4.4.3 |b|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear reflector likely to become detached |4.8.1 |b| |ii|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Stop lamp not working front lever |4.3.1 |a| |ii|| | 1 |
| Front Brake lever cracked |3.1.2c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Nearside Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Throttle operating incorrectly Not returning correctly on lock. (6.2.7 (a) (i)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock traps your fingers (2.1.4 (b)) | 1 |
| Headlamp reflector missing (4.1.1 (b) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Central Front Brake excessively binding (1.2.1 (f)) | 1 |
| Central Front Brake component insecure Front brake hose at head stock insecure. (1.1.21 (c)) | 1 |
| Central Front Steering operation linkage fouling when handlebars turned from lock to lock Wiring around head stock insecure and restricting steering on full lock. (2.1.4 (a)) | 1 |
| Central Front Headlamp aim so that beam "kick up" is not visible on the screen No beam pattern from headlamps. (4.1.2 (a)) | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Front Stop lamp not working brake switch (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Steering headbearing has excessive wear or free play excessive free play (2.2.2 (f) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort brake tester indicates run out in rear disc (1.2.1 (e)) | 1 |
| Decelerometer brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Offside Front Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Wheel more than one fixing loose rear chain adjuster lock nuts loose (5.2.1 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Horn not working intermittant (7.7 (a)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort Warped. (1.2.1 (e)) | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Rear reflector missing replaced prs (4.8.2 (a) (ii)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator light intensity significantly reduced (4.4.3 (a)) | 1 |
| Offside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Offside Rear Direction indicator light intensity significantly reduced (4.4.3 (a)) | 1 |
| Front Stop lamp not working brake (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working brake (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Drive chain so loose it is likely to fail drive chain is very loose. (6.1.7 (c) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Wheel spindle locking device ineffective o/s chain adjuster loose (5.2.1 (d)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front replaced (4.3.2 (a) (iii)) | 1 |
| Rear Direction indicator obviously incorrectly positioned Both (4.4.3 (a)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |