| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 37 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 31 |
| Registration plate issues | 23 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 21 |
| Headlamp aim out of alignment | 17 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 15 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 13 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Offside Steering lock stop ineffective |2.1.3| | 12 |
| Riders seat insecure |6.2.1a| | 10 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Nearside Steering lock stop ineffective |2.1.3| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 6 |
| Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Nearside Rear Direction indicator not working |1.5.1c| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Offside Front Direction indicator insecure |1.5.3b| | 5 |
| Offside Steering lock stop missing |2.1.3| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 4 |
| Horn not working |1.7.3a| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Offside Front Steering lock stop ineffective |2.1.3| | 3 |
| Fuel cap sealing washer missing |7.2.2c| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| 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| | 3 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Steering lock stop missing |2.1.3| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Steering linkage has excessive free play |2.2.2| | 2 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 2 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Brake lever insecure |3.1.2a| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear Footrest missing |6.2.1a| | 1 |
| Brake component has an inadequate repair |3.1.5| | 1 |
| Rear Brake component has an inadequate repair |3.1.5| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Offside Outer Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Centre Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering headbearing has excessive wear or free play excesssive free play |2.2.2 |f| |i|| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock fouling on bodywork when on full right lock |2.1.4 |b|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Central Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Nearside Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Offside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Offside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Rear Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Vehicle identification number not legible |6.3.5a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Steering lock stop maladjusted |2.1.3| | 1 |
| Offside Front Upper Steering lock stop missing |2.1.3| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Steering lock stop maladjusted |2.1.3| | 1 |
| Brake lever mounting insecure |3.1.2a| | 1 |
| Brake hose damaged | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Headlamp switch faulty (1.2.4) | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Nearside Front Upper Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Front Lower Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Lower Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Centre Rear Lower Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Centre Rear Upper Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Centre Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Brake lever mounting cracked |3.1.2c| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Nearside Direction indicator insecure |1.5.3b| | 1 |
| Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Brake hose excessively deteriorated | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Brake cable badly frayed |3.2.A1b| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |