Does your car need premium gas?
Type your year, make and model. Get the EPA's answer — premium or regular — plus real MPG and yearly fuel cost.
Free, no sign-up. Try 2024 Honda Civic or 2024 Mazda CX-5.
50,407 car trims, 1984–2027 · 15,813 listed as premium · 29,952 regular · straight from the EPA dataset.
It often depends on the exact trim
Two versions of the same model can take different fuel — the sporty engine or the manual often wants premium while the base automatic takes regular. These models are split:
Popular lookups
Classic cars (pre-1984) — no official EPA rating, but not a mystery either
Our EPA dataset starts at 1984. For icons before that we sourced honest, clearly-labeled MPG estimates from period road tests and corroborated owner reports — never presented as an official figure.
Frequently asked questions
How do I know if my car needs premium gas?
Look up your exact year, make, model and trim above. We show the fuel grade the EPA recorded for that vehicle — the fuel the manufacturer specified when the car was tested for its mileage rating. That answers "premium or regular" for 50,407 trims. The one thing it cannot tell you is whether premium is strictly required or merely recommended; that distinction lives in your owner's manual, and we won't guess it.
Is premium gas worth the extra money?
If your engine requires premium, it isn't optional — those engines are tuned for higher octane and running regular can cause knock. If premium is only recommended, most engines run safely on regular because the computer pulls timing to prevent knock, costing a few percent in power and MPG. Premium usually runs 50–70¢ more per gallon, which works out to roughly $250 a year over about 30 fills — often not worth it for a few percent. See the full cost-benefit math →
Why do two versions of the same model take different gas?
Because fuel grade is set by the engine, not the badge. A turbocharged or high-compression engine in the sport trim often calls for premium while the base engine in the same model year takes regular, so "a Honda Civic" is not one answer. 15,813 trims in this dataset are listed as premium and 29,952 as regular — including pairs from the same model. See models that split →
Does premium gas clean my engine?
That's a different product claim. "Top Tier" is a detergent standard — more cleaning additives than the EPA minimum — and it is not the same thing as octane. Top Tier regular is still regular; it won't add power or change which grade your car needs. More on Top Tier →
What gas does my car take? → Cars that take premium → Cheapest cars to fuel → Where it depends on the trim → Fuel guides →