Premium vs Unleaded Fuel

By Product Expert | Posted in Tips & Tricks on Thursday, July 6th, 2017 at 2:06 pm
premium vs unleaded gasoline fuel pumps gas station

What’s the Difference Between Premium and Unleaded Gasoline?

Though fuel costs are lower than they have been in the past years, drivers continually strive for ways to save money on fuel costs. With advancing technology we have seen vehicles improve fuel efficiency, an increase in hybrid models and new options available for the eco-friendly driver. Here we look at the difference between premium and unleaded gasoline and decipher if your vehicle actually needs premium fuel or not.  

Premium gas is more expensive because it contains a higher percentage of octane. When vaporized gas mixes with air and fills the combustion chamber, it is compressed by the rising pistons. The gas-air mixture grows hot and it could ignite before the spark plug fires, pushing backward on the piston. Higher-octane fuels can be compressed to a greater degree without self-igniting. That’s why premium gas is used on high-performance engines.

Does My Vehicle Need Premium Gas?

Understanding whether your vehicle needs premium gasoline or not will depend on if the premium fuel is recommended or required. If it is merely recommended then you can use premium or unleaded gasoline. The vehicle will run on unleaded without issue and won’t damage the engine though the performance will suffer slightly but not enough to really notice. If your vehicle is required to use premium fuel then you cannot use unleaded fuel and can only use premium. To know whether your vehicle needs premium fuel or not check the owner’s manual or the inside of the fuel door.

Read More: Tips to Improve Fuel Economy

Need more information on your vehicle’s fuel needs? Contact us at Hall Cars to talk with a team member for more information. Check out our available fuel efficient models and find out more on our blog on how you can help improve your vehicle’s fuel economy along with other helpful tips and tricks.


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It is no surprise that the harsh winter months can wreak havoc on our vehicles, especially for us lucky ones that live in Wisconsin. While we may not be out of the clear yet it is a good time to start thinking about spring service for your vehicle. Don’t stress because at Hall Cars we can help! We have a fantastic state-of-the-art service center that can help you with any repairs or maintenance needs you may have and we are always running service specials, which you can see on our website!
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One Response to “Premium vs Unleaded Fuel”

  1. Seyha says:

    Hi, I don’t understand about: Exelium Gasoline, Premium Gasoline, and Unleaded Gasoline. What are the difference? Does the unleaded gasoline and regular gasoline is the same meaning? Please kindly reply me vis email. Thanks

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