| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 45 |
| Rear reflector on motorcycle missing |1.4.1| | 26 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 24 |
| Registration plate issues | 20 |
| Horn not working |1.7.3a| | 19 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 19 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 17 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 16 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 14 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 13 |
| Steering headbearing has excessive free play |2.2.2| | 12 |
| Handlebar mounting clamp loose |2.1.1a| | 10 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Rear Position lamp not working (4.2.1 (a)) | 9 |
| Rear reflector missing (4.8.2 (a) (ii)) | 9 |
| Nearside Steering lock stop ineffective |2.1.3| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 6 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 6 |
| Direction indicators not working |1.5.1c| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Exhaust excessively deteriorated |7.1.1a| | 5 |
| Nearside Rear Direction indicators not working |1.5.1c| | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| All direction indicators not working (4.4.1 (a) (ii)) | 5 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 5 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 5 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 5 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 4 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Registration plate lamp issues | 4 |
| Handlebar mounting so insecure that steering is adversely affected (2.2.1 (a) (ii)) | 4 |
| Headlamp aim not tested (4.1.2 (b)) | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Front Direction indicator not working |1.5.1c| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Offside Steering lock stop ineffective |2.1.3| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 3 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Headlamp insecure (4.1.1 (c)) | 3 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 3 |
| Brake hose damaged | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear Front mudguard insecure |2.3.7| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Indicator switch defective |1.5.4| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Rear reflector on sidecar missing |1.4.1| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Rear Rear position lamp insecure |1.1.1c| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Steering lock stop maladjusted |2.1.3| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 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 |
| Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 2 |
| Rear Position lamp likely to become detached (4.2.1 (c) (ii)) | 2 |
| Rear Brake lagging in operation (1.2.1 (d)) | 2 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 2 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 2 |
| Rear Brake grabbing severely (1.2.1 (c)) | 2 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 2 |