Premium vs. Regular Gas: What’s the Difference?

Filling up Car at Gas Pump

If you want your vehicle to perform at its best on the roads near , you’ll need to compare premium vs. regular gas! Although both are made from refined crude oil, the main difference between premium and regular gas is that premium products have a higher octane level! Learn more by reading on, and determine if it’s right for your vehicle by contacting your local Suntrup service center today.

What is Premium Gasoline?

Premium gasoline is fuel which has an octane level of 90 or higher. The higher the octane level, the more compression is needed for combustion. Some vehicles require premium gasoline in order to function, but if your vehicle does not require premium, it won’t offer any significant benefits.

In addition to providing a better performance, premium gasoline keeps your engine cleaner and reduces pollution.

What is Regular Gasoline?

Regular gasoline is the most common type of gas, and at the pump, it’s most commonly labeled as “Unleaded”. Regular gasoline has an octane level of 87.

Confused as to what this means? In the past, gasoline contained lead which would burn off as the fuel was consumed. Today, all regular (and premium) gas is required to be unleaded, which means that it’s better for the environment, and for our health!

The Difference Between Premium and Regular Gas

Here’s what you should keep in mind when comparing premium vs. regular gas:

  • Octane Rating
    • Failed or inappropriate combustion is usually referred to as engine knocking. When fuel fails to ignite as intended, the results will damage your vehicle over time. This is why some high-performance vehicles require premium.
  • Engine Suitability
    • Does your engine have a high compression ratio? Check your owner’s manual if you’re unsure. If it does, premium gasoline will help to ensure that you get more power out of every engine cycle.
  • Price
    • It’s no secret that premium gasoline costs more than regular gasoline. In some cases, the price difference can be as significant as 20 to 40 extra cents per gallon!
Gas Station Pumps

Trying to decide on premium vs. regular gas for your vehicle? Here are a few tips:

  • If your vehicle does not require premium gasoline, there are no real performance benefits to using it.
  • If your vehicle does require premium gasoline, you can probably get away with using regular from time to time. However, you might experience reduced horsepower, worse acceleration, or engine knocking.
  • Premium gasoline is often recommended for vehicles that use turbochargers, but you should check your owner’s manual to be sure.

Contact the Suntrup Automotive Group Service Center Today

You’ve seen the difference between premium and regular gas, but if you still have questions, you can always contact your local service center near or . Would you like to learn more about service and performance? Find out how often to rotate your tires or how often to change your oil with the Suntrup Automotive Group.


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5926 S. Lindbergh Blvd • St. Louis, MO 63123

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Suntrup Automotive Group

5926 S. Lindbergh Blvd St. Louis, MO

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Suntrup Automotive Group
Suntrup Automotive Group
5926 S. Lindbergh Blvd
St. Louis, MO, 63123 US
https://di-uploads-development.dealerinspire.com/suntrupdirect/uploads/2018/01/SuntrupOGImage.png
Suntrup Automotive Group 38.5214964, -90.3451239.