Compare Cars Side by Side: Fuel Economy, MPG & Specs

Car compare side by side: put any two vehicles side by side on EPA combined MPG, city and highway fuel economy, annual fuel cost, engines, transmissions, and drivetrain — all from official test data.

Compare SUVs side by side, or any two sedans, trucks, hybrids or EVs, and read the side by side fuel economy figures — combined, city and highway miles per gallon — straight from the EPA test record rather than a manufacturer brochure. Each matchup also shows estimated annual fuel cost at 15,000 miles a year, so you can compare car fuel consumption in dollars as well as miles per gallon.

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Popular matchups

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All 175 published matchups

Looking for a matchup that isn't listed? Every model pair in the same EPA class has a page — find either vehicle through search and follow its comparison links.

How AutoSpecData comparisons work

Most car comparisons online mix manufacturer marketing claims with third-party estimates, which makes the two columns impossible to trust against each other. Every comparison here is built from one source set: US EPA and Department of Energy fuel economy test data, cross-checked against NHTSA vPIC vehicle records. Both sides of the table are measured the same way, in the same laboratory cycle, for the same model year — so a 3 MPG gap on the page is a real 3 MPG gap, not a difference in testing methodology.

Each matchup page shows city, highway, and combined MPG, estimated annual fuel cost, engine displacement and cylinder count, transmission, drivetrain, and EPA vehicle class for both vehicles, with the more efficient figure highlighted in each row. Where a model offered several engines or drivetrains in the same year, the comparison uses the most representative configuration and the model pages break out the rest.

Pairs are filtered before publication: two vehicles must share a vehicle class and both must have enough trim rows to fill the table. That keeps the library focused on matchups a real shopper would actually cross-shop, instead of every mathematically possible combination.

Comparing cars: common questions

How are the two vehicles compared?

Each matchup puts the two vehicles side by side on EPA combined, city, and highway MPG, estimated annual fuel cost at 15,000 miles a year, engine displacement and cylinder count, transmission type, drivetrain, and EPA vehicle class. Every figure comes from the same official dataset for both vehicles, so the comparison is apples to apples rather than one manufacturer's number against another's.

Why can't I compare any two vehicles?

Comparison pages are published only for pairs that share an EPA vehicle class and both have enough recorded trim data to make the table meaningful. A midsize sedan against a heavy-duty pickup would produce a table nobody can act on, so those pairs are left out deliberately.

Which number matters most when comparing two cars?

Combined MPG for the specific model year and drivetrain you are considering, followed by estimated annual fuel cost. Over five years and 75,000 miles, a 4 MPG difference between two otherwise similar vehicles typically works out to several thousand dollars — usually larger than the sticker gap between trims.

Are hybrids and EVs included?

Yes. Hybrids are shown with their EPA MPG ratings, and electric vehicles use MPGe along with kWh per 100 miles so you can convert to your own electricity rate. For a full gas-versus-electric ownership picture, use the Gas vs EV cost calculator rather than the MPG figure alone.