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Genesis G80 Fuel Economy (MPG)

What is the real-world gas mileage of a 2027 Genesis G80?

The 2027 Genesis G80 gets up to 97 MPG combined (105 city / 89 highway) in EPA testing.

Latest model year (2027):

The Genesis G80 gets up to 23 MPG combined (20 city / 29 highway) in the Auto (S8), 4 cyl, 2.5 L trim.

Verifiedfueleconomy.gov · Verified August 11, 2026
OverviewMPGEngine SpecsFuel CostTransmissionDrivetrainVehicle ClassMaintenanceDimensionsCurb WeightEV Range

Genesis G80 MPG — All Years

YearTrimEngineFuelCity (MPG)Hwy (MPG)Combined (MPG)
2027Config 1 of 2Auto (S8), 4 cyl, 2.5 L4 2.5LPremium Gasoline202923
2027Config 2 of 2Auto (S8), 6 cyl, 3.5 L6 3.5LPremium Gasoline162418
2026Config 1 of 3Auto (A1)—Electricity999396
2026Config 2 of 3Auto (S8), 4 cyl, 2.5 L4 2.5LPremium Gasoline202923
2026Config 3 of 3Auto (S8), 6 cyl, 3.5 L6 3.5LPremium Gasoline152418
2025Config 1 of 3Auto (A1)—Electricity1058997
2025Config 2 of 3Auto (S8), 4 cyl, 2.5 L4 2.5LPremium Gasoline202924
2025Config 3 of 3Auto (S8), 6 cyl, 3.5 L6 3.5LPremium Gasoline162419
2024Config 1 of 3Auto (A1)—Electricity1058997
2024Config 2 of 3Auto (S8), 4 cyl, 2.5 L4 2.5LPremium Gasoline223025
2024Config 3 of 3Auto (S8), 6 cyl, 3.5 L6 3.5LPremium Gasoline172519
2023Config 1 of 4Auto (A1)—Electricity1058997
2023Config 2 of 4Auto (S8), 4 cyl, 2.5 L4 2.5LPremium Gasoline223025
2023Config 3 of 4Auto (S8), 4 cyl, 2.5 L4 2.5LPremium Gasoline223226
2023Config 4 of 4Auto (S8), 6 cyl, 3.5 L6 3.5LPremium Gasoline162519
2022Config 1 of 3Auto (S8), 4 cyl, 2.5 L4 2.5LPremium Gasoline223025
2022Config 2 of 3Auto (S8), 4 cyl, 2.5 L4 2.5LPremium Gasoline233226
2022Config 3 of 3Auto (S8), 6 cyl, 3.5 L6 3.5LPremium Gasoline172620
2021Config 1 of 4Auto (S8), 4 cyl, 2.5 L4 2.5LPremium Gasoline223025
2021Config 2 of 4Auto (S8), 4 cyl, 2.5 L4 2.5LPremium Gasoline233226
2021Config 3 of 4Auto (S8), 6 cyl, 3.5 L6 3.5LPremium Gasoline182621
2021Config 4 of 4Auto (S8), 6 cyl, 3.5 L6 3.5LPremium Gasoline192722
2020Config 1 of 6Auto (S8), 6 cyl, 3.3 L6 3.3LPremium Gasoline172520
2020Config 2 of 6Auto (S8), 6 cyl, 3.3 L6 3.3LPremium Gasoline172420
2020Config 3 of 6Auto (S8), 6 cyl, 3.8 L6 3.8LRegular Gasoline182420
2020Config 4 of 6Auto (S8), 6 cyl, 3.8 L6 3.8LRegular Gasoline182621
2020Config 5 of 6Auto (S8), 8 cyl, 5.0 L8 5.0LPremium Gasoline152318
2020Config 6 of 6Auto (S8), 8 cyl, 5.0 L8 5.0LPremium Gasoline162419
2019Config 1 of 6Auto (S8), 6 cyl, 3.3 L6 3.3LPremium Gasoline172420
2019Config 2 of 6Auto (S8), 6 cyl, 3.3 L6 3.3LPremium Gasoline172520
2019Config 3 of 6Auto (S8), 6 cyl, 3.8 L6 3.8LRegular Gasoline182420
2019Config 4 of 6Auto (S8), 6 cyl, 3.8 L6 3.8LRegular Gasoline182621
2019Config 5 of 6Auto (S8), 8 cyl, 5.0 L8 5.0LPremium Gasoline152318
2019Config 6 of 6Auto (S8), 8 cyl, 5.0 L8 5.0LPremium Gasoline162419
2018Config 1 of 6Auto (S8), 6 cyl, 3.3 L6 3.3LPremium Gasoline172420
2018Config 2 of 6Auto (S8), 6 cyl, 3.3 L6 3.3LPremium Gasoline172520
2018Config 3 of 6Auto (S8), 6 cyl, 3.8 L6 3.8LRegular Gasoline182520
2018Config 4 of 6Auto (S8), 6 cyl, 3.8 L6 3.8LRegular Gasoline192722
2018Config 5 of 6Auto (S8), 8 cyl, 5.0 L8 5.0LPremium Gasoline152318
2018Config 6 of 6Auto (S8), 8 cyl, 5.0 L8 5.0LPremium Gasoline162419
2017Config 1 of 3Auto (S8), 6 cyl, 3.8 L6 3.8LRegular Gasoline182822
2017Config 2 of 3Auto (S8), 6 cyl, 3.8 L6 3.8LRegular Gasoline162519
2017Config 3 of 3Auto (S8), 8 cyl, 5.0 L8 5.0LPremium Gasoline152318

Data sourced from fueleconomy.gov (U.S. Department of Energy). MPG figures are EPA-tested. Fuel costs are estimates based on average fuel prices and 15,000 miles/year.

Genesis G80 data analysis

How Genesis G80 combined fuel economy varies

Across 43 configurations recorded for the 2017 through 2027 Genesis G80, combined fuel economy runs from 18 MPG to 97 MPG. The strongest figure belongs to the 2023 Genesis G80 (Auto (A1)) at 97 MPG, and the weakest to the 2027 car (Auto (S8), 6 cyl, 3.5 L) at 18 MPG — a spread of 439%. A gap that wide means the model year and configuration you buy matter more than the nameplate does: quoting a single number for the Genesis G80 would be misleading.

What changed for 2027

Average combined fuel economy for the 2027 Genesis G80 is 20.5 MPG, against 45.7 MPG for the 2026 car — it fell by 25.2 MPG. Buyers who care most about this figure should look at the earlier model years in the table above before assuming newest is best.

How to read this Genesis G80 data

This page lists every 2017 through 2027 Genesis G80 record we hold for this measurement — 43 rows in total, one per configuration and model year rather than a single headline figure. Figures are published as the source agency records them: we do not round, average or interpolate missing years, and a year that is absent from the table is a year with no published measurement rather than a zero. Where a manufacturer offered several drivetrains or body styles in the same year, each appears on its own row, because those variants rarely share the same numbers.

Configurations behind these Genesis G80 numbers

The 2017 through 2027 Genesis G80 entries here cover the variants Auto (S8), 4 cyl, 2.5 L, Auto (S8), 6 cyl, 3.5 L, Auto (A1), Auto (S8), 6 cyl, 3.3 L, Auto (S8), 6 cyl, 3.8 L and Auto (S8), 8 cyl, 5.0 L. 2020 is the busiest model year in the record with 6 separate measured configurations, which is why a single quoted combined fuel economy figure for that year is rarely the one that matches the car in front of you. Match the row to the exact drivetrain, body style and engine on the window sticker or VIN before relying on the number, and use the comparison links below to see how those same configurations line up against rival models.

Where these Genesis G80 figures come from

Every value on this page is loaded from federal open data — EPA fuel economy submissions, NHTSA vehicle and crash-test records, and manufacturer specification filings — rather than dealer listings or copied editorial content. The Genesis G80 record refreshes as the agencies publish, which typically means new model-year rows appear in the autumn and crash-test results follow through the model year as vehicles are tested. Because certification data is filed per configuration, treat any single headline number for this vehicle with caution: the figure that applies to a specific car depends on its engine, drivetrain, body style and model year, all of which are listed separately above. If a number here disagrees with a brochure, the brochure is usually quoting the best available configuration rather than the one being sold.

Official Factory Specs vs. AutoSpecData Expert Benchmarks

The EPA highway loop never holds interstate speed. Here is what the same engine does when you sit on the cruise control.

Cruise speedEPA highway specAutoSpecData adjusted MPGFuel you lose
60 mph93 MPG93 MPG0%
65 mph93 MPG86.7 MPG7%
70 mph93 MPG80.8 MPG13%
75 mph93 MPG75.2 MPG19%
80 mph93 MPG70.1 MPG25%

Our Real-World Speed MPG Adjuster re-scales the Genesis G80 EPA highway result with a quadratic drag term (mpg = hwy ÷ (1 + k·(v² − 60²)/60²), k = 0.55 for trucks, SUVs and vans, 0.42 for cars). Wind, roof racks, and a heavy right foot make it worse, never better.

Frequently Asked Questions About G80 MPG

What is the MPG of the Genesis G80?

The Genesis G80 gets up to 97 MPG combined (105 city / 89 highway) in the 2027 model year. Fuel economy varies by engine and trim — see the full table above for details.

Which Genesis G80 trim has the best fuel economy?

The Auto (A1) trim offers the best combined fuel economy at 97 MPG. Smaller engines and front-wheel-drive configurations typically achieve the highest MPG.

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