| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 35 |
| Registration plate lamp issues | 21 |
| Headlamp aim beam image kick up to the offside |1.6| | 14 |
| Drive chain excessively loose |6.2.1d| | 12 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Registration plate issues | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 5 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear Position lamp not working |4.2.1 |a|| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 4 |
| Horn not working |1.7.3a| | 3 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 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 |
| 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 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Horn not working Reconnected wire |7.7 |a| |ii|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Position lamp switch does not illuminate all position lamps with a single operation |4.2.2 |a|| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Offside Front Upper Handlebar deformed |2.1.1b| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Front suspension assembly component missing |2.3.1| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Nearside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear reflector defective or damaged by more than 50% of the reflecting surface |4.8.1 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Rear Brake pedal mounting cracked . |3.1.2c| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Nearside Front Upper Brake hose connection leaking banjo to caliper |1.1.12 |c|| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Upper Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Upper Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Rear Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake component is excessively corroded |3.1.5| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Lower Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Nearside Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Throttle operating incorrectly sticking |6.2.7 |a| |i|| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Central Front Upper Stop lamp not working front brake light N/W (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp not working REPLACED SWITCH DURING TEST (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain sprocket excessively loose bearing (6.1.7 (c) (i)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Rear Stop lamp not working Control 2 (4.3.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Chain guard insecure (6.1.7 (i)) | 1 |
| Brake rod insecure rear brake torque arm (1.1.15 (c)) | 1 |
| Offside Front Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Front Brake disc contaminated due to front shock absorber oil leaks (1.1.14 (b)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort (3.3.A1d) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear Brake master cylinder insecure MISSING (1.1.10 (c)) | 1 |
| Rear Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Central Rear Upper Suspension component pin or bush likely to become detached (5.3.4 (a) (ii)) | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Nearside Rear Wheel bearing has excessive play sprocket carrier (5.1.3 (a) (i)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected on turning right thottle opens to 2000 r p m (6.2.7 (a) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Brake excessively binding wheel bearings not fully tested (1.2.1 (f)) | 1 |
| Nearside Front Engine mounting/bracket missing (6.1.8 (a) (ii)) | 1 |
| Offside Front Engine mounting/bracket missing (6.1.8 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Offside Front Brake disc contaminated R/H/F contaminated with oil from leaking fork seal (1.1.14 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak R/H fork seal (5.3.2 (b)) | 1 |