| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 51 |
| Registration plate issues | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 14 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Rear Position lamp not working (4.2.1 (a)) | 6 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Riders seat insecure |6.2.1a| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 5 |
| Registration plate lamp issues | 5 |
| Rear reflector missing |4.8.2 |a| |ii|| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Front Brake excessively binding |1.2.1 |f|| | 4 |
| 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| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Horn not working |1.7.3a| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Rear reflector on motorcycle obscured |1.4.1| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Front Position lamp not working (4.2.1 (a)) | 4 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Direction indicator not working |1.5.1c| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front An item not tested |Manual| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Exhaust mounting does not fully support the exhaust system bolts not mounting exhaust |7.1.1.c| | 1 |
| Rear Brake back plate|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Centre Front position lamp|s| not working |1.1.A.3b| | 1 |
| Hazard warning switch missing |1.4.B.1d| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Fuel system component leaking Carb over flows leaking |7.2.1a| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Rear Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies front lever |1.3.1a| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Brake locking device missing torque arm |3.2.A1e| | 1 |
| Offside Front Lower Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Centre Rear Upper Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Direction indicators not working Front remains on , Rear not working |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies Either Brake operates offside indicators |1.3.1a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Front Wheel spindle or securing nut|s| so insecure that wheel security or steering control is adversely affected |5.2.1 |c| |ii|| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Stop lamp does not illuminate immediately a brake applies control two |1.3.1a| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies on front control |1.3.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies on rear control |1.3.1a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Nearside Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Wheel bearing play so excessive that directional control is impaired |5.1.3 |a| |ii|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced Swingarm |6.1.1 |c| |i|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket |6.2.1h| | 1 |
| Rear position lamp deteriorated and function impaired Not working |1.1.1b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle sticking |6.2.7 |a| |ii|| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Drive chain so loose it is likely to fail and is very dry. |6.1.7 |c| |ii|| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low no braking function-no hydraulic pressure |3.2.B1d| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake pivot has restricted free movement (1.1.15 (e)) | 1 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 1 |
| Offside Rear Brake cable damaged (1.1.15 (a)) | 1 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 1 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Offside Brake lever has abnormal movement of levers indicating excessive wear or maladjustment rear brake pedal bottoms out on crash bars (1.1.15 (f)) | 1 |
| Central Steering headbearing excessively stiff or notchy very notchy headstock bearings (2.2.2 (f) (i)) | 1 |
| Nearside Rear Drive chain worn to excess chain and sprockets dangerously worn out (6.1.7 (c) (i)) | 1 |
| Offside Front Exhaust silencer insecure front exhaust broken off cylinder head (8.1.1 (b) (i)) | 1 |
| Front Exhaust has a major leak of exhaust gases exhaust gasses coming out of the broken off down pipe (6.1.2 (a)) | 1 |
| Offside Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition very noisy modified exhaust with no silencers fitted (8.1.1 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Steering headbearing excessively stiff or notchy Steering headbearings excessively notchy (2.2.2 (f) (i)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected Throttle control sticking on, full lock to right (6.2.7 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Throttle operating incorrectly sticking (6.2.7 (a) (i)) | 1 |
| Rear Brake component inadequately mounted torque reaction arm locking device missing (split pin) (1.1.21 (c)) | 1 |
| Drive chain excessively loose worn out (6.1.7 (c) (i)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Handlebar grip insecure to handlebar both grips (2.2.1 (d) (ii)) | 1 |
| Upper Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Drive chain so worn it is likely to fail chain worn and has stiff links (6.1.7 (c) (ii)) | 1 |
| Rear Position lamp likely to become detached (4.2.1 (c) (ii)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Fuel pipe insecure (6.1.3 (a) (i)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake pressure storage reservoir insecure (1.1.9 (c)) | 1 |
| Stop lamp not working foot (4.3.1 (a) (ii)) | 1 |
| Rear Brake excessively binding wheel bearing not checked (1.2.1 (f)) | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Central Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Nearside Front Upper All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Upper All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Upper All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Upper All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Headlamp aim not tested innop (4.1.2 (b)) | 1 |
| Stop lamp missing (4.3.1 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |