| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 40 |
| Registration plate issues | 16 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Horn not working |1.7.3a| | 10 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Riders seat insecure |6.2.1a| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Direction indicator not working |1.5.1c| | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Nearside Front Brake pipe inadequately supported |3.2.B2b| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Direction indicators not working |1.5.1c| | 2 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| An item not tested |Manual| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Sidecar attachment insecure |5.1.1b| | 2 |
| Sidecar wheel bearings are excessively rough |5.2.3d| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Offside Front Brake pipe inadequately supported |3.2.B2b| | 2 |
| Offside Upper Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Upper Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Upper Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Front Front suspension assembly component cracked |2.3.1| | 1 |
| Offside Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Upper Riders seat insecure |6.2.1a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Brake cable badly frayed |3.2.A1b| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Sidecar rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Front Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Footrest missing rear footrests missing |6.2.1a| | 1 |
| Roller brake test indicates a binding brake front brakes binding |3.3.A1a| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort rear brake has excessive fluctuation |3.3.A1d| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Nearside Fuel hose leaking |7.2.1a| | 1 |
| Offside Fuel hose leaking |7.2.1a| | 1 |
| Front front brake binding |3.7.B.1| | 1 |
| Steering system fouling |2.2.D.2a| | 1 |
| Parking brake is not capable of being maintained in operation by direct mechanical action only |3.1.2| | 1 |
| Suspension arm attachment bracket/mounting insecure |2.4.G.1| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Front Upper Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Centre Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Fuel pipe union leaking |7.2.1a| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Fuel hose leaking |6.1.3 |b| |i|| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Direction indicator obscured |1.5.1a| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Centre Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking Centre stand is insecure. |6.1.1c| | 1 |
| Front Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Offside Front Brake disc contaminated oil |1.1.14 |b|| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Nearside Sidecar rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Sidecar front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Sidecar attachment insecure |5.1.1b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Throttle operating incorrectly sticking |6.2.1f| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Fuel pipe union leaking |7.2.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Brake pipe excessively corroded | 1 |
| Brake hose damaged | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Throttle operating incorrectly rough and sticks on esp on lock to lock |6.2.1f| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator obscured |1.5.1a| | 1 |
| Offside Front Direction indicator obscured |1.5.1a| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| All direction indicators not working Unable to start |4.4.1 |a| |ii|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition Unable to start or run engine |8.1.1 |a|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |