| Most common failures | No# failures |
|---|
| Registration plate issues | 32 |
| Headlamp aim out of alignment | 13 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| 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| | 4 |
| Horn missing |1.7.1| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Rear Direction indicator missing |1.5.1a| | 2 |
| Offside Rear Direction indicator missing |1.5.1a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Registration plate lamp issues | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Stop lamp with a multiple light source more than 1/2 not functioning |4.3.1 |a| |ii|| | 1 |
| Drive belt so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Horn not working |1.7.3a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside 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| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| 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| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Front Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Direction indicator missing All direction indicators |1.5.1a| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Fuel pipe leaking excessively or a risk of fire carb leaking fuel excessively (6.1.3 (b) (ii)) | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |