| Most common failures | No# failures |
|---|
| Registration plate issues | 48 |
| Headlamp aim out of alignment | 31 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Steering headbearing has excessive free play |2.2.2| | 16 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 14 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 13 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 10 |
| Horn not working |1.7.3a| | 9 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 7 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 5 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Brake hose excessively deteriorated | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Front suspension assembly component loose |2.3.1| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Rear Brake pedal is inoperative |3.1.3c| | 2 |
| Front wheel insecure |4.2.3b| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Registration plate lamp issues | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| An item not tested |Manual| | 1 |
| Front Brake cable has a significantly damaged outer casing. |3.2.A1b| | 1 |
| Central Front All position lamps not working fuse blown |4.2.1 |a|| | 1 |
| Rear Brake component is severely distorted |3.1.5| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Front position lamp does not illuminate immediately when switched on high beam |1.1.3a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Nearside Front Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Offside Front Front wheel has a loose wheel stud|s| |4.2.3a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Rear Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Offside Front Shock absorber insecurely attached |5.3.2 |a| |i|| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Steering headbearing in such a condition that steering control is adversely affected Excessively notchy steering |2.2.2 |f| |ii|| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Wheel fixing loose |multiple fixings| |5.2.1 |a| |i|| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Front Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| 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 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake cable has a significantly damaged outer casing. |3.2.A1b| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Steering lock stop maladjusted |2.1.3| | 1 |
| Rear Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake component damaged and seriously reduced in strength |3.2.A1| | 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 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Rear Lower Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Offside Front Upper Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Brake hose damaged | 1 |
| Front suspension assembly component loose Damper |2.3.1| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Steering linkage has excessive free play |2.2.2| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Handlebar handgrip missing |2.1.1c| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Brake drum|s| cracked |3.2.A1g| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Offside Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Nearside Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Front position lamp does not face the front |1.1.1d| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Brake pedal is bent and the brake cannot be readily applied (3.1.3c) | 1 |
| Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Nearside Rear Lower Wheel hub excessively worn (5.2.1 (b) (i)) | 1 |
| Exhaust has a major leak of exhaust gases unable to test (6.1.2 (a)) | 1 |
| All position lamps not working unable to test (4.2.1 (a)) | 1 |
| Central Front All position lamps not working fuse (4.2.1 (a)) | 1 |
| Nearside Rear All position lamps not working fuse (4.2.1 (a)) | 1 |
| Front Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Offside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Headlamp light intensity severely reduced flickering and intermittent operation (4.1.4 (a)) | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Front Suspension arm attachment bracket/mounting insecure loose swing arm bolt (5.3.3 (a) (i)) | 1 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls lever (4.3.2 (a) (iii)) | 1 |