| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 46 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 21 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Steering headbearing has excessive free play |2.2.2| | 16 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Registration plate issues | 12 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 9 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 8 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 8 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Fuel cap sealing washer missing |7.2.2c| | 7 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 6 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Front suspension assembly component excessively corroded. |2.3.1| | 4 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Horn not working |1.7.3a| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Front suspension assembly component excessively bent |2.3.1| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Offside Front Front suspension assembly component excessively corroded. |2.3.1| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 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 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Rear Brake lever insecure |3.1.2a| | 2 |
| Centre Front Horn not working |1.7.3a| | 2 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 2 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Registration plate lamp issues | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Front wheel spindle loose |2.3.5a| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Offside Rear 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 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Brake lever insecure |3.1.2a| | 1 |
| Front Upper Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Lower Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Front Brake cylinder leaking hydraulic fluid caliper |3.2.B1e| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Lower Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake lever cracked |3.1.2c| | 1 |
| Rear Brake cable excessively corroded |3.2.A1b| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Centre Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Nearside Front Upper Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Centre Rear Upper Fuel cap sealing washer missing |7.2.2c| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake lever is inoperative |3.1.3c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Rear Fuel pipe leaking |7.2.1a| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear Rear position lamp missing |1.1.1a| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Rear Brake lining|s| contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake cable badly frayed |3.2.A1b| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak both forks (5.3.2 (b)) | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Rear reflector likely to become detached (4.8.1 (b) (ii)) | 1 |