Which Gas Type is Best for the Subaru Crosstrek 2018?

Are you one of those people who fret over which kind of gas to put in your car? If you’ve recently purchased a Subaru Crosstrek 2018 and you’re wondering what kind of gas it needs, you’re in the right place. In this article, we’ll explore the different types of gas that can be used in the Crosstrek 2018 and whether using premium gas is worth the extra expense.

Gas Types for Subaru Crosstrek 2018

The Subaru Crosstrek 2018, like most cars, can run on different types of gas. Regular gas with an octane rating of 87 is the least expensive and most commonly used. Mid-grade gas has a rating of 89, while premium gas has a rating of 91 or higher.

When it comes to the Crosstrek 2018, Subaru’s official recommendation is to use regular grade gasoline with an octane rating of 87 or higher. However, some owners might choose mid-grade or premium gas, believing it could enhance their car’s performance.

Performance and Fuel Economy

Does the type of gas you use impact the performance and fuel economy of your Crosstrek 2018? It depends. While higher-octane gas contains additives that can help prevent engine knocking, a phenomenon that hampers performance and damages your engine, there are no significant benefits of putting premium gas in a car that only requires regular.

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Using mid-grade or premium gas in a Crosstrek 2018 won’t result in any significant performance or fuel economy gains. Moreover, the fuel system and engine components of the Crosstrek 2018 are designed to work best with regular gas. As a result, using a higher-octane gas might not only harm your engine but also lead to reduced fuel economy.

Cost-Benefit Analysis

Finally, the question of cost must be addressed. Regular gasoline is often less expensive than premium gas, and the cost difference can add up over time. In contrast, premium gas can be as much as 50 cents a gallon more costly than regular gas. For a 15-gallon tank, that can add up to around $7.50 per tank, or $300 per year if you fill up once a week.


Q: Can you use mid-grade or premium gas in a Crosstrek 2018?

A: While it’s permissible to use higher-octane gas, the Crosstrek 2018 runs best with regular gasoline.

Q: Will using a higher-octane gas improve my Crosstrek 2018’s performance?

A: No, there are no performance enhancements associated with using mid-grade or premium gas in a car that is designed to run on regular gasoline.

Q: Is premium gas worth the extra cost?

A: For a Crosstrek 2018, the extra cost of using premium gas doesn’t justify any marginal benefit in performance or mileage.


In the end, choosing the right type of gas for your Subaru Crosstrek 2018 comes down to sticking with what the owner’s manual recommends. Regular gas with an octane rating of 87 or higher is the way to go. Using mid-grade or premium gas might have negligible effects on performance or fuel economy but will undoubtedly have a negative impact on your wallet.

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Davis Bellew

As a Subaru owner and enthusiast, Davis has a deep understanding of the needs and concerns of Subaru drivers. He specializes in writing informative and engaging content about Subaru maintenance and repair, and his articles are always well-researched and easy to understand. When he's not writing, he enjoys hiking and photography.

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