| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 35 |
| Horn not working |1.7.3a| | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 11 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 8 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 7 |
| Registration plate issues | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 5 |
| Riders seat insecure |6.2.1a| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Handlebar mounting clamp loose |2.1.1a| | 4 |
| Fuel cap sealing washer torn |7.2.2c| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Nearside Steering lock stop ineffective |2.1.3| | 3 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Front Lower Steering headbearing has excessive free play |2.2.2| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Steering linkage has excessive free play |2.2.2| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Front mudguard insecure |2.3.7| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front position lamp does not illuminate immediately when switched on side light |1.1.3a| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 2 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front wheel bearings are excessively tight |2.3.5b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Steering operation impeded by a fairing |2.1.4 |e|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Fuel hose insecure |6.1.3 |a| |i|| | 1 |
| Steering operation impeded by a fairing |2.1.4 |e|| | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure |6.1.1 |b| |i|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies brake applied |1.3.1a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Offside Front Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Front Fork yoke in such a condition that steering control is adversely affected Steering lock stop broken. |2.2.2 |d| |ii|| | 1 |
| Front Wheel has bolts/rivets missing or loose to the extent that control of the motorcycle is likely to be adversely affected Front mudguard missing. |5.2.2 |e| |ii|| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Wheel alignment incorrect which adversely affects the handling forks or yokes bent? |2.4 |a|| | 1 |
| Steering linkage locking device ineffective no steering stops |2.1.3 |d|| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Fairings insecure and likely to impede the steering front mudguard |2.1.2e| | 1 |
| Rear wheel rotation likely to be impeded rear mudguard |6.2.1b| | 1 |
| Front position lamp does not illuminate immediately when switched on DIP BEAM |1.1.3a| | 1 |
| Front suspension assembly component excessively bent Forks |2.3.1| | 1 |
| Rear 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 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake fluid reservoir severely corroded |3.2.B1b| | 1 |
| Offside Front Brake lever insecure |3.1.2a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking mudgaurd |6.1.1c| | 1 |
| Dipswitch does not operate immediately when selected on main beam |4.1.3 |b|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Centre Front Riders seat insecure |6.2.1a| | 1 |
| Centre Front Steering lock stop maladjusted |2.1.3| | 1 |
| Nearside Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Stop lamp showing white light to the rear |4.3.3 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Offside Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Direction indicators not working All |1.5.1c| | 1 |
| Central Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Upper Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure rear top box mount very loose ,could upset handling of machine |6.1.1 |b| |i|| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake lever cracked |3.1.2c| | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Front Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Central Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Steering operation fouling on the fuel tank or bodywork on full lock lock stop |2.1.4 |b|| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Nearside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 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 |
| Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Direction indicator incorrect colour All |1.5.1b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Steering lock stop maladjusted |2.1.3| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear position lamp insecure light lens |1.1.1c| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Registration plate lamp issues | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Nearside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Steering headbearing excessively stiff or notchy notchy (2.2.2 (f) (i)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 1 |
| Front Suspension component has excessive wear or free play Lock stop allows excessive movement to nearside (5.3.3 (d)) | 1 |
| Fuel cap ineffective sealing washer damaged Not effective (6.1.3 (b) (i)) | 1 |
| Front Suspension component has excessive wear or free play Headstock bearings excessive free play (5.3.3 (d)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Rear Upper Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Rear Upper Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Riders seat with a defective supporting structure (6.2.5 (a) (i)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Handlebar mounting so insecure that steering is adversely affected handle bars loose (2.2.1 (a) (ii)) | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Steering linkage component insecure to the motorcycle structure (2.1.3 (a) (i)) | 1 |
| Rear Brake lever pivot excessively worn (1.1.1 (b)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Brake lever has insufficient reserve travel Adjusted (1.1.2 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake performance not tested (1.2.1 (g)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |