If you are departing from Singapore in a Singapore-registered motor vehicle, the vehicle’s motor fuel supply tank must be at least three-quarter tank full.
For petrol-CNG vehicles, drivers should ensure both the petrol and CNG fuel tanks are at least three-quarter full.
Please note that the three-quarter tank rule does not apply to Singapore-registered motor vehicles that run purely on diesel.
Those who do not meet the rule may be prosecuted in court and fined up to S$500. The driver must turn back to Singapore to fill the vehicle’s fuel supply tank to at least three-quarter full before the vehicle is allowed to leave Singapore.
If the vehicle’s fuel gauge is tampered, the driver will be charged in court for illegal alteration of the fuel-measuring equipment. More information on customs offences is available here.