| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 14 |
| Steering headbearing has excessive free play |2.2.2| | 12 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 11 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 11 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Registration plate issues | 6 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Fuel cap sealing washer missing |7.2.2c| | 4 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 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 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear wheel insecure |4.2.3b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Nearside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Offside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Nearside Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 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 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Upper Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| An item not tested |Manual| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Brake component is severely distorted |3.1.5| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Front Upper Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Centre Front Front suspension assembly component loose |2.3.1| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Headlamp aim not tested |1.6| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Front Brake lining|s| less than 1.0 mm thick |1.1.13 |a|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Position lamp light intensity significantly reduced when on dip beam |4.2.3 |a| |ii|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Brake cable excessively corroded |3.2.A1b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Horn control not functioning. |1.7.2b| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Horn not working |1.7.3a| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |