AutoSpecData

Infiniti QX50 Fuel Economy (MPG)

What is the real-world gas mileage of a 2025 Infiniti QX50?

The 2025 Infiniti QX50 gets up to 27 MPG combined (24 city / 31 highway) in EPA testing.

Latest model year (2025):

The Infiniti QX50 gets up to 26 MPG combined (23 city / 29 highway) in the Auto (AV-S8), 4 cyl, 2.0 L trim.

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

Infiniti QX50 MPG — All Years

YearTrimEngineFuelCity (MPG)Hwy (MPG)Combined (MPG)
2025Config 1 of 2Auto (AV-S8), 4 cyl, 2.0 L4 2.0LPremium Gasoline232926
2025Config 2 of 2Auto (AV-S8), 4 cyl, 2.0 L4 2.0LPremium Gasoline222825
2024Config 1 of 2Auto (AV-S8), 4 cyl, 2.0 L4 2.0LPremium Gasoline232926
2024Config 2 of 2Auto (AV-S8), 4 cyl, 2.0 L4 2.0LPremium Gasoline222825
2023Config 1 of 2Auto (AV-S8), 4 cyl, 2.0 L4 2.0LPremium Gasoline232926
2023Config 2 of 2Auto (AV-S8), 4 cyl, 2.0 L4 2.0LPremium Gasoline222825
2022Config 1 of 2Auto (AV-S8), 4 cyl, 2.0 L4 2.0LPremium Gasoline232926
2022Config 2 of 2Auto (AV-S8), 4 cyl, 2.0 L4 2.0LPremium Gasoline222825
2021Config 1 of 2Auto (AV-S8), 4 cyl, 2.0 L4 2.0LPremium Gasoline232926
2021Config 2 of 2Auto (AV-S8), 4 cyl, 2.0 L4 2.0LPremium Gasoline222825
2020Config 1 of 2Auto (AV-S8), 4 cyl, 2.0 L4 2.0LPremium Gasoline232926
2020Config 2 of 2Auto (AV-S8), 4 cyl, 2.0 L4 2.0LPremium Gasoline222825
2019Config 1 of 2Auto (AV-S8), 4 cyl, 2.0 L4 2.0LPremium Gasoline243127
2019Config 2 of 2Auto (AV-S8), 4 cyl, 2.0 L4 2.0LPremium Gasoline243026
2017Config 1 of 2Auto (S7), 6 cyl, 3.7 L6 3.7LPremium Gasoline172420
2017Config 2 of 2Auto (S7), 6 cyl, 3.7 L6 3.7LPremium Gasoline172420
2016Config 1 of 2Auto (S7), 6 cyl, 3.7 L6 3.7LPremium Gasoline172420
2016Config 2 of 2Auto (S7), 6 cyl, 3.7 L6 3.7LPremium Gasoline172420
2015Config 1 of 2Auto (S7), 6 cyl, 3.7 L6 3.7LPremium Gasoline172520
2015Config 2 of 2Auto (S7), 6 cyl, 3.7 L6 3.7LPremium Gasoline172420

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.

Infiniti QX50 data analysis

How Infiniti QX50 combined fuel economy varies

Across 20 configurations recorded for the 2015 through 2025 Infiniti QX50, combined fuel economy runs from 20 MPG to 27 MPG. The strongest figure belongs to the 2019 Infiniti QX50 (Auto (AV-S8), 4 cyl, 2.0 L) at 27 MPG, and the weakest to the 2017 car (Auto (S7), 6 cyl, 3.7 L) at 20 MPG — a spread of 35%. A gap that wide means the model year and configuration you buy matter more than the nameplate does: quoting a single number for the Infiniti QX50 would be misleading.

What changed for 2025

Average combined fuel economy for the 2025 Infiniti QX50 is 25.5 MPG, against 25.5 MPG for the 2024 car — it held flat. A carry-over year like this usually means no powertrain or structural change, so an older example is the cheaper way into the same specification.

How to read this Infiniti QX50 data

This page lists every 2015 through 2025 Infiniti QX50 record we hold for this measurement — 20 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 Infiniti QX50 numbers

The 2015 through 2025 Infiniti QX50 entries here cover the variants Auto (AV-S8), 4 cyl, 2.0 L and Auto (S7), 6 cyl, 3.7 L. 2025 is the busiest model year in the record with 2 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 Infiniti QX50 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 Infiniti QX50 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 mph31 MPG31 MPG0%
65 mph31 MPG28.3 MPG9%
70 mph31 MPG25.9 MPG17%
75 mph31 MPG23.7 MPG24%
80 mph31 MPG21.7 MPG30%

Our Real-World Speed MPG Adjuster re-scales the Infiniti QX50 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 QX50 MPG

What is the MPG of the Infiniti QX50?

The Infiniti QX50 gets up to 27 MPG combined (24 city / 31 highway) in the 2025 model year. Fuel economy varies by engine and trim — see the full table above for details.

Which Infiniti QX50 trim has the best fuel economy?

The Auto (AV-S8), 4 cyl, 2.0 L trim offers the best combined fuel economy at 27 MPG. Smaller engines and front-wheel-drive configurations typically achieve the highest MPG.

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