| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 25 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 9 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Brake disc|s| cracked |3.2.A1g| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Brake disc contaminated both (1.1.14 (b)) | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Nearside Stop lamp not working front brake light switch |4.3.1 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies Brake light doesn`t illuminate when lever is applied |1.3.1a| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Registration plate lamp issues | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort fluctuation of brake effort around 25kg on rear brake (1.2.1 (e)) | 1 |
| Brake caliper inadequately mounted rubber caliper bush missing
front o/s
rear |1.1.16 |c| |i|| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Front Headlamp aim not tested |4.1.2 |b|| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Offside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake fluid contaminated (1.8 (a)) | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Nearside Front Engine mounting/bracket bracket fractured BOLT SNAPPED OFF (6.1.8 (a) (ii)) | 1 |
| Rear Stop lamp not working Front brake switch faulty (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working from front brake |4.3.1 |a| |ii|| | 1 |
| Throttle operating incorrectly not returning fully on lock to nearside |6.2.1f| | 1 |
| Front Engine mounting/bracket missing |6.1.8 |a| |ii|| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Horn not working |1.7.3a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Stop lamp does not illuminate immediately a brake applies By application of rear brake |1.3.1a| | 1 |
| Offside Shock absorber has a serious fluid leak fork leg (5.3.2 (b)) | 1 |
| Offside Front Brake disc contaminated fork oil (1.1.14 (b)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Front Position lamp switch faulty |1.1.4a| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Brake performance not tested |3.3| | 1 |
| Registration plate issues | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Stop lamp not working rear stop light |4.3.1 |a| |ii|| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Front Lower Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced frame cross member broken/ corroded (6.1.1 (c) (i)) | 1 |
| Nearside Front Exhaust silencer likely to become detached clamp missing (8.1.1 (b) (ii)) | 1 |
| Offside Front Exhaust silencer likely to become detached clamp missing + clamp area split (8.1.1 (b) (ii)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |