| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 30 |
| Throttle operating incorrectly |6.2.1f| | 10 |
| Registration plate issues | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Headlamp insecure |1.2.3b| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Nearside Footrest insecure |6.2.1a| | 2 |
| Rear parking brake recording little or no effort | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Brake hose damaged | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 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 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Valve stem seriously misaligned |5.2.3 |j|| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear Position lamp not working |4.2.1 |a| |ii|| | 1 |
| Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Nearside Parking brake inoperative on one side |1.4.1 |a|| | 1 |
| Offside Parking brake inoperative on one side |1.4.1 |a|| | 1 |
| Steering wheel has movement relative to the column indicating looseness |2.2.1 |a| |i|| | 1 |
| Front Shock absorbers has a serious fluid leak |5.3.2 |b|| | 1 |
| Driver`s seat insecure |6.2.5 |a| |ii|| | 1 |
| Hazard warning switch inoperative |4.4.2 |a| |ii|| | 1 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 1 |
| Exhaust system not adequately supported |7.1.1| | 1 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 1 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 1 |
| Service brake: efficiency below requirements |3.7.B.7| | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Nearside Front shock absorber leaking oil |9.2.7b| | 1 |
| Front brake disc contaminated by oil |3.5.1h| | 1 |
| Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Centre Rear Lower Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Lower Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Brake performance not tested |3.3| | 1 |
| Front An item not tested |Manual| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Stop lamp does not emit a steady light foot brake |1.3.1b| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Offside Front suspension assembly component excessively bent |2.3.1| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Lower Brake reaction bracket insecure |3.2.A1j| | 1 |
| Centre Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Centre Front Upper Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Lower Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Lower Footrest insecure |6.2.1a| | 1 |
| Offside Rear Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Upper Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Brake pedal mounting insecure |3.1.2a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Wheel excessively damaged badly dented (5.2.2 (c) (i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Rear Service brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Offside Rear Service brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Service brake efficiency less than 50% of the required value (1.2.2 (a) (ii)) | 1 |
| Handlebar insecure (2.2.1 (d) (i)) | 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 |
| Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Offside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |