ExxonMobil Engineer at Pump fuel efficient

Fuel types  

We meticulously develop gasoline and diesel for all types of vehicles

At Exxon and Mobil, we sweat the details so you can enjoy the ride. So wherever you’re going, count on high-quality Exxon and Mobil Synergy™ fuels to get you there. Learn more about all our Synergy™ fuels.

  • Gasoline, Exxon and Mobil Synergy gasoline is Top Tier

    Go with Exxon and Mobil SynergyTM gasoline – it’s TOP TIER®

    Exxon and Mobil SynergyTM gasoline contains significantly higher quantities of detergents than required by the Environmental Protection Agency (EPA) and has passed key performance tests resulting in it being certified TOP TIER. TOP TIER fuel is recommended by many automakers in their vehicles’ owner manuals.

  • Diesel fuel, get good ignition quality with Synergy

    Get good ignition quality with SynergyTM diesel fuel

    Our Exxon and Mobil SynergyTM diesel is blended to provide good ignition quality and is held to high quality standards for our customers.

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  • Ethanol and Exxon and Mobil fuel

    Gasoline blended with ethanol

    Almost all gasoline now has some ethanol in it, including Exxon- and Mobil- branded gasoline which currently contains up to 10%.

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  • Octane ratings of gasoline and what level is right for your car

    Octane ratings of gasoline

    Find out what octane ratings measure and what octane level is right for your vehicle.
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Have a question about our fuel types?

View our FAQs
  • engineer at gas pump

    Exxon and Mobil Synergy™ gasoline

    Find out more about Synergy™ gasoline, meticulously engineered to help you get better gas mileage.*

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  • developing quality gas that’s best for your car

    Quality fuels to get you where you're going

    Discover what steps we take to ensure the quality of our fuels.

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  • Tips to help you improve fuel efficiency

    Get more out of every trip

    Explore our comprehensive list of tips to help you improve fuel efficiency and get more out of every trip.

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  • About Synergy Gasoline for better gas mileage

    TOP TIER SynergyTM gasoline

    Get the facts about Exxon and Mobil SynergyTM branded gasoline, including what makes it TOP TIER® and what grades we offer.

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*Fuel economy improvement is based on Synergy-branded gasoline compared to gasoline meeting minimum U.S. government standards. Actual benefits will vary based on factors such as vehicle type, driving style and gasoline previously used.
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