| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 26 |
| Rear reflector on motorcycle missing |1.4.1| | 20 |
| Registration plate issues | 13 |
| Drive chain excessively tight |6.2.1d| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Front wheel bearings are excessively rough |2.3.5b| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Horn not working |1.7.3a| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear Brake disc|s| cracked |3.2.A1g| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Rear Hydraulic brake control creeps under load. |3.1.4a| | 3 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Headlamp incorrect colour |1.2.1| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 2 |
| Riders seat insecure |6.2.1a| | 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 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Nearside Front Brake caliper|s| insecure |3.2.A1j| | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Nearside Front Brake component is severely distorted |3.1.5| | 1 |
| Offside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Position lamp switch does not operate in accordance with the requirements (4.2.2 (a)) | 1 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Centre Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear wheel spindle securing nut locking device missing nearside rear chain adjuster/tensioner broken/missing |2.4.A.2b| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Indicator switch insecure |1.5.4| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected Throttle grip is not secure and turns freely without operating throttle (6.2.7 (a) (ii)) | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Upper Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Nearside Rear Direction indicator obscured |1.5.1a| | 1 |
| Offside Rear Direction indicator obscured |1.5.1a| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Outer Brake pipe excessively chafed |3.2.B2a| | 1 |
| Nearside Outer Brake pipe excessively damaged |3.2.B2a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake component is fractured |3.1.5| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Central Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Central Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Offside Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Offside Front Upper Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Centre Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Centre Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Centre Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Lower Brake linked system has an excessively worn caliper pivot. |3.2.B5| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Front suspension assembly component missing |2.3.1| | 1 |
| Centre Rear Lower Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Direction indicators flashing less than 60 times a minute Machine needs a new relay |1.5.1c| | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Front Brake master cylinder leaking From banjo, PRS. OK. (1.1.10 (b) (ii)) | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Inner Front Brake component has an inadequate repair |3.1.5| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Front Brake caliper excessively corroded and likely to crack (1.1.16 (d) (ii)) | 1 |
| Offside Front Brake caliper excessively corroded and likely to crack (1.1.16 (d) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel air in brake sytem (1.1.2 (a)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Rear Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Brake performance not tested front brake binding excessively |3.3| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Registration plate lamp issues | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Brake hose damaged | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies when the front brake is applied |1.3.1a| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Stop lamp not working rear brake |4.3.1 |a| |ii|| | 1 |
| Rear Brake caliper insecure rubbers gon (1.1.16 (c) (i)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |