| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 10 |
| Headlamp aim out of alignment | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| 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 |
| Registration plate issues | 5 |
| Horn not working |1.7.3a| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Handlebar deformed |2.1.1b| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Brake locking device insecure |3.2.A1e| | 3 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Fuel system component leaking carn on engine |7.2.1a| | 1 |
| Lower Rear suspension component excessively corroded. swing arm |2.4.A.1a| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Steering headbearing has excessive free play top nut loose |2.2.2| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim headlamp damaged and function impaired on dip |1.2.3a| | 1 |
| Headlamp aim headlamp damaged and function impaired incorrect beam pattern |1.2.3a| | 1 |
| Horn not loud enough to be heard by another road user effected by lights |1.7.3a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear Brake component has an inadequate repair |3.1.5| | 1 |
| Front Brake component has an inadequate repair |3.1.5| | 1 |
| Rear Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Chain guard insecure |6.1.7 |i|| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Offside Rear Rear suspension component excessively bent |2.4.A.1a| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Exhaust silencer insecure |8.1.1 |b| |i|| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Shock absorber has a serious fluid leak both front forks leaking oil (5.3.2 (b)) | 1 |
| Rear Shock absorber has negligible damping effect inadequate damping of rear suspension (5.3.2 (b)) | 1 |
| Rear Brake has no recorded effort at a wheel linkage arm failed during brake test operation, arm came off cam (1.2.1 (a) (ii)) | 1 |
| Brake rod insecure rear brake rod incorrect, as goes over top of wheel spindle, not underneath. (1.1.15 (c)) | 1 |
| Brake component insecure rear brake drum arm was not pushed onto cam correctly, which resulted in failure on the brake test (1.1.21 (c)) | 1 |
| Rear Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Rear Wheel more than one fixing loose wheel has side to side movement, and wheel spindle rocks as if wheel not fully tightened, or spacer missing (5.2.1 (a) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted clip link is missing (6.1.7 (j) (i)) | 1 |
| Front Front position lamp does not illuminate immediately when switched on Dip Beam Not Working. |1.1.3a| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Front Brake drum|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Indicator switch defective |1.5.4| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Steering headbearing has excessive free play notchey |2.2.2| | 1 |
| Rear Indicator tell tale not operating correctly |1.5.2| | 1 |
| Centre Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Outer Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Centre Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |