| Most common failures | No# failures |
|---|
| Registration plate issues | 83 |
| Headlamp aim out of alignment | 34 |
| Rear reflector on motorcycle missing |1.4.1| | 29 |
| 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| | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Rear reflector missing (4.8.2 (a) (ii)) | 9 |
| Horn not working |1.7.3a| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Headlamp aim beam image kick up to the offside |1.6| | 7 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear 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| | 3 |
| Stop lamp does not illuminate immediately a brake applies front brake |1.3.1a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Horn not working (7.7 (a) (ii)) | 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 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Direction indicator not working |1.5.1c| | 2 |
| Registration plate lamp issues | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Stop lamp does not illuminate immediately a brake applies rear brake |1.3.1a| | 1 |
| Fuel system component leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Fuel system component leaking fuel tap |6.1.3 |b| |i|| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Brake disc insecure (1.1.14 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Horn control not readily accesible. |1.7.2a| | 1 |
| Stop lamp does not illuminate immediately a brake applies No front stop switch fitted |1.3.1a| | 1 |
| Direction indicators not working Indicators not fitted |1.5.1c| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Nearside Front suspension assembly component missing Locking device missing |2.3.1| | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Stop lamp not working front and rear |4.3.1 |a| |ii|| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Direction indicators not working (1.5.1c) | 1 |
| All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort (3.3.A1d) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Brake disc insecure (1.1.14 (a) (ii)) | 1 |
| All direction indicators missing no indicators fitted (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp missing (4.3.1 (a) (ii)) | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Offside Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Indicator switch defective |1.5.4| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Offside Front Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front 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 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Headlamp main beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Offside Fuel system component leaking excessively or a risk of fire carb dripping fuel. (6.1.3 (b) (ii)) | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies hand control not operating break light |1.3.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Nearside Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |