| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 12 |
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Headlamp aim beam image kick up to the offside |1.6| | 8 |
| Horn not working |1.7.3a| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Registration plate issues | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Headlamp switch faulty |1.2.4| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Fuel system component insecure |7.2.1b| | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Drive chain fouling another component |6.2.1d| | 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 position lamp insecure |1.1.1c| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Steering lock stop missing |2.1.3| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Front Lower Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Rear Lower Chain guard insecure |6.2.1c| | 1 |
| Nearside Rear Lower Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| An item not tested |Manual| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Nearside Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Direction indicator not working loose wire (4.4.1 (a) (ii)) | 1 |
| Inner Front Upper Headlamp insecure |1.2.3b| | 1 |
| Inner Rear Lower Brake hose leaking fluid |3.2.B4| | 1 |
| Nearside Rear Upper Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Inner Front Upper Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Offside Rear Lower Footrest insecure |6.2.1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Motorcycle structure cracked |6.1.1a| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Suspension arm pin or bush likely to become detached rear swingarm pivot retaining nut is missing (5.3.4 (a) (ii)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure front subframe insecure (6.1.1 (b) (i)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Centre Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Centre Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Centre Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Indicator tell tale not functioning |1.5.2| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front wheel has a missing wheel bolt|s| |4.2.3a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Stop lamp not working FR.stop light not working (4.3.1 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Front Brake hose which buldges |3.2.B4| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Handlebar fractured |2.1.1b| | 1 |
| Brake pedal is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |