| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 49 |
| Rear reflector on motorcycle missing |1.4.1| | 17 |
| Registration plate issues | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Horn not working |1.7.3a| | 6 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| 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| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Stop lamp not working when front brake is applied (4.3.1 (a) (ii)) | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front brake |1.3.1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Nearside Front Direction indicator lens defective such that the emitted light is adversely affected |4.4.1 |b| |ii|| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 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 |
| 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 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Brake fluid contaminated (1.8 (a)) | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Horn missing |1.7.1| | 1 |
| Offside Front Position lamp not working (4.2.1 (a)) | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Headlamp has more than 1/2 LEDs not functioning (4.1.1 (a) (ii)) | 1 |
| Rear Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Throttle operating incorrectly throttle does not shut off |6.2.1f| | 1 |
| Offside Front Macpherson strut has excessive movement at the upper attachment |2.5.A.1c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp does not illuminate immediately a brake applies front switch |1.3.1a| | 1 |
| Front Brake cylinder cracked brake master cyclinder resvoir cracked |1.1.16 |a| |i|| | 1 |
| Front Brake cylinder has no reserve travel and braking performance affected front brakes binding badley , causing grabing |1.1.16 |e| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak oil leaking from forks |5.3.2 |b|| | 1 |
| Rear Brake cylinder damaged rear brake making cracking noise , may be piston corrosion |1.1.16 |a| |i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Offside Brake pedal attachment screws loose |3.1.2b| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front position lamp incorrect colour side lights |1.1.2a| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake master cylinder leaking |1.1.10 |b| |ii|| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear reflector on motorcycle missing reflector missing |1.4.1| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Stop lamp does not illuminate immediately a brake applies front lever switch |1.3.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Drive chain so loose it is likely to fail adjust (6.1.7 (c) (ii)) | 1 |
| Nearside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |