| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 37 |
| Registration plate issues | 14 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 10 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Registration plate lamp issues | 3 |
| Nearside Footrest insecure |6.2.1a| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Headlamp switch faulty |1.2.4| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Horn not working |1.7.3a| | 2 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Horn control defective |1.7.2a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Nearside Front Lower Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear Lower Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure offside fork leg fowls on indicator bracket (6.1.1 (b) (i)) | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Brake component leaking fluid |3.2.B4| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Shock absorber has a serious fluid leak fork seals leaking (5.3.2 (b)) | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Front Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Front All position lamps not working Side lights |4.2.1 |a|| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Offside Front shock absorber seal failed and leaking oil fork |2.3.3| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front An item not tested |Manual| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear An item not tested |Manual| | 1 |
| Brake hose excessively deteriorated | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Nearside Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Offside Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Brake disc|s| friction surface contaminated by oil or grease both |3.2.A1k| | 1 |
| Front shock absorber seal failed and leaking oil both |2.3.3| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Centre Lower Exhaust is leaking and excessively noisey |7.1.1b| | 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 |
| Stop lamp remains on when the brakes are released | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Brake component leaking fluid |3.2.B4| | 1 |
| Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Headlamp aim does not move downwards when dipped |1.6.5| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| An item not tested |Manual| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Brake component is fractured |3.1.5| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Fuel cap leaking |6.1.3 |b| |i|| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 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 |
| Direction indicator likely to become detached n/s/r indictor lamp likely to become detached |4.4.1 |c| |ii|| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Nearside Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Offside Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Centre Front Upper Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |