| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 25 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Registration plate issues | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Horn not working |1.7.3a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Horn control defective |1.7.2a| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake lever |1.3.1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Central Rear Position lamp not working (4.2.1 (a)) | 1 |
| Brake lever has restricted free movement Front (1.1.15 (e)) | 1 |
| Clutch lever positioned so it cannot be readily operated (6.2.7 (b)) | 1 |
| Central Rear Lower Wheel alignment incorrect which adversely affects the handling Out of alignment (2.4 (a)) | 1 |
| Stop lamp not working Front brake switch (4.3.1 (a) (ii)) | 1 |
| Central Rear Upper Stop lamp not working front and rear brake lights not working |4.3.1 |a| |ii|| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Brake component leaking fluid |3.2.B4| | 1 |
| Offside Steering lock stop maladjusted |2.1.3| | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Front Brake master cylinder insecure (1.1.10 (c)) | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Drive chain worn to excess Seized links, and O rings deteriorated. |6.2.1e| | 1 |
| Direction indicator not working All indicators not working. |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 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 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Fuel tank leaking |7.2.1a| | 1 |
| Brake hose damaged | 1 |
| Front Valve stem seriously misaligned |5.2.3 |j|| | 1 |
| Rear Valve stem seriously misaligned |5.2.3 |j|| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain split link fitted in wrong direction |6.2.1h| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride rear wheel spindle , split pin missing |6.2.1h| | 1 |
| Brake lever insecure bolt loose |1.1.2 |e| |i|| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Wheel bearing has excessive play FRONT WHEEL EXCESSIVE BEARING PLAY (5.1.3 (a) (i)) | 1 |
| Direction indicator not working O S F inoperative (4.4.1 (a) (ii)) | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 1 |
| Rear Wheel has an excessively distorted bead rim. (4.2.2) | 1 |
| Rear Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Central Rear Upper Stop lamp does not illuminate by the operation of both brake controls Not working (4.3.2 (a) (iii)) | 1 |
| Central Front Upper Headlamp not working on dipped beam Not working on dip or main beam so cant check headlight aim (4.1.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Nearside Rear Upper Direction indicator not working Not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Upper Direction indicator not working Not working (4.4.1 (a) (ii)) | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |