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All vehicles use fuel to provide energy to the engine. A fuel-efficient vehicle is not only less expensive to run, it also minimises the impact on the environment through reduced emissions.

At a glance

Understanding Fuel

A vehicle can run on different types of fuel, such as petrol, diesel, Compressed Natural Gas (CNG), electricity or a combination of petrol and electricity.


Your vehicle’s fuel type determines its vehicle emission charges.


If your vehicle runs on CNG, it will be subject to additional requirements.


You can convert your vehicle to a CNG vehicle if it meets the requirements.

Determining fuel efficiency and vehicular emissions of your car or light goods vehicle

There are 2 tools that help you assess the fuel efficiency of a car or light commercial vehicle:

The Fuel Cost Calculator also helps you compare fuel costs, fuel economy and vehicular emissions scheme bandings between different car and light commercial vehicle models.

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Fuel Cost Calculator

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Learn more about fuel prices at Fuel Kaki by CASE

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Understanding Fuel

Some vehicles are powered by petrol, diesel or Compressed Natural Gas (CNG), while some run on electricity or a hybrid of petrol and electricity.


Vehicle Emission Charges

The type of fuel your vehicle runs on determines the type of emission it produces. The Vehicular Emissions Scheme (VES) grants rebates and surcharges based on a car’s emissions. The Commercial Vehicle Emissions Scheme (CVES) grants incentives and surcharges based on a light commercial vehicle's emissions.

Learn more about Vehicle Emission Charges


Vehicles running on CNG

CNG vehicles are fitted with CNG cylinders that have a lifespan of 10 to 20 years. Every CNG cylinder has a marking that shows the expiry date of the CNG cylinder.

Expired CNG cylinders pose safety risks. As a CNG vehicle owner, you are advised to periodically check to ensure that the CNG systems are in good working condition, and are not expired.


Converting your vehicle to a CNG Vehicle


Converting your vehicle to a CNG vehicle

If you wish to convert your new or existing vehicle to run on CNG, approach any LTA-approved CNG system supplier to check if your vehicle is suitable. The CNG system supplier will then submit your application via VITAS for LTA’s assessment.

If you meet the requirements, the in-principle approval letter will be sent to the CNG system supplier. The supplier will then need to send the vehicle for inspection at any LTA-Authorised Inspection Centre (AIC).

Identification Marking Requirement

Once your vehicle is successfully modified into a CNG vehicle, you will need to affix the CNG marking on your vehicle as follows:


The CNG system-information marking enables verification during periodic vehicle inspections.

Learn more about vehicle inspection


Determining Fuel Efficiency and Vehicular Emissions for your car or light commercial vehicle


When buying a vehicle, consider the fuel efficiency of the vehicle to reduce the running costs and environmental impact of your vehicle. There are two ways to assess the fuel efficiency of a car or light commercial vehicle.


Labels on Fuel Economy and Vehicular Emissions

When buying a car or light commercial vehicle, look out for a VES (for car) or CVES (for light commercial vehicle) label affixed on the vehicle’s windscreen in the showroom. This label helps you to compare the vehicle’s fuel consumption and CO2 emission. Other vehicular emissions such as CO, HC and the VES/CVES bandings are also indicated on the label.


Fuel cost calculator

Compare the costs and emissions of different car or light commercial vehicle models with the interactive fuel-cost calculator below.

This allows you to enter your expected mileage, and compare the projected yearly fuel cost of each vehicle. Actual values may vary depending on your driving pattern and how much weight your vehicle carries.

Fuel Cost calculator


Find out more about fuel policies

Learn more about fuel policies