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Singapore Customs

Three-Quarter Tank Rule

Learn about the Three-Quarter Tank Rule for Singapore-registered vehicles, including who it applies to, how it is enforced and the penalties for non-compliance.

Last updated 23 February 2026

If you drive a Singapore-registered vehicle out of the country, your fuel tank must be at least three-quarters full.

Who It Applies To

This rule applies to all Singapore-registered vehicles leaving Singapore by land, including those running on:

  • Petrol

  • Diesel

  • Compressed Natural Gas (CNG)

For hybrid vehicles that use petrol and CNG, both fuel tanks must be at least three-quarters full.

Penalties

If you do not comply with the Three-Quarter Tank Rule:

  • You may be issued a composition sum of up to S$500, or

  • Be prosecuted in court

  • You will also be required to make a U-turn at the checkpoint

  • You may also be charged in court for illegal alteration of the fuel measuring equipment if your fuel gauge is tampered with

To avoid delays or penalties, make sure your fuel tank is at least three-quarters full before heading to the land checkpoints.

Refer to the types of Customs Offences for more information.