| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 25 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 25 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 20 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Registration plate issues | 15 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Front wheel bearings have excessive free play |2.3.5b| | 11 |
| Stop lamp remains on when the brake is released |1.3.1e| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Front wheel bearings are excessively rough |2.3.5b| | 9 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Horn not working |1.7.3a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Registration plate lamp issues | 3 |
| Upper Rear mono-shock pivot excessively worn |2.4.B.4| | 3 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Front Brake component has an inadequate repair pads fitted incorrectly |3.1.5| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front Upper Steering lock stop maladjusted |2.1.3| | 1 |
| Offside Front Upper Steering lock stop maladjusted |2.1.3| | 1 |
| Brake hose damaged | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Front Brake performance not tested (1.2.1 (g)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Direction indicator obviously incorrectly positioned Rear indicators do not comply with minimum separation distance of 180mm (4.4.3 (a)) | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| 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| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen led bulb not functioning correctly dip & main image (4.1.2 (a)) | 1 |
| Headlamp not working on main beam led bulb not functioning correctly (4.1.1 (a) (ii)) | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Centre Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Offside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake component leaking fluid |3.2.B4| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Stop lamp not working on front brake lever (4.3.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Steering lock stop maladjusted |2.1.3| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Centre Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Outer Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies with front switch unplugged |1.3.1a| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front All position lamps not working (4.2.1 (a)) | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Upper Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Front Brake hose leaking |1.1.12 |c|| | 1 |
| Stop lamp not working BULB (4.3.1 (a) (ii)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride split link |6.2.1h| | 1 |
| Stop lamp does not illuminate immediately a brake applies front control |1.3.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Centre Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Clutch lever positioned so it cannot be readily operated |6.2.7 |b|| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Wheel alignment incorrect which adversely affects the handling rear wheel not central |2.5.1| | 1 |
| Front Front mudguard can easily contact the wheel |2.3.7| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |