| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 20 |
| Rear reflector on motorcycle missing |1.4.1| | 17 |
| Headlamp aim beam image kick up to the offside |1.6| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Horn not working |1.7.3a| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Registration plate issues | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Headlamp insecure |1.2.3b| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Fuel cap sealing washer missing |7.2.2c| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| 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| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Upper Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Direction indicator adversely affected by the operation of another lamp Flashes brake light not indicators |4.4.3 |b|| | 1 |
| Registration plate lamp issues | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake hose damaged | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Brake cylinder operating mechanism has excessive travel (1.1.16 (e) (i)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake component is severely distorted |3.1.5| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Rear Brake pedal insecure |3.1.2a| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Nearside Front suspension has a fracture of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Offside Front suspension has a fracture of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Front Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Fuel system component insecure fuel tank insecure |7.2.1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Offside Rear mono-shock insecure do not ride this motorcycle. rear shock is insecure and fractured. |2.4.B.4| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Position lamp not working L/H rear light (4.2.1 (a)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls horn |2.1.2b| | 1 |
| Nearside Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Front Lower Headlamp aim not tested (4.1.2 (b)) | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |