Infiniti QX65 Fuel Economy (MPG)
What is the real-world gas mileage of a 2027 Infiniti QX65?
The 2027 Infiniti QX65 gets up to 22 MPG combined (20 city / 26 highway) in EPA testing.
Latest model year (2027):
The Infiniti QX65 gets up to 22 MPG combined (20 city / 26 highway) in the Auto (S9), 4 cyl, 2.0 L trim.
Infiniti QX65 MPG — All Years
| Year | Trim | Engine | Fuel | City (MPG) | Hwy (MPG) | Combined (MPG) |
|---|---|---|---|---|---|---|
| 2027 | Auto (S9), 4 cyl, 2.0 L | 4 2.0L | Premium Gasoline | 20 | 26 | 22 |
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 QX65 data analysis
How to read this Infiniti QX65 data
This page lists every 2027 Infiniti QX65 record we hold for this measurement — 1 row 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.
Where these Infiniti QX65 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 QX65 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 speed | EPA highway spec | AutoSpecData adjusted MPG | Fuel you lose |
|---|---|---|---|
| 60 mph | 26 MPG | 26 MPG | 0% |
| 65 mph | 26 MPG | 23.7 MPG | 9% |
| 70 mph | 26 MPG | 21.7 MPG | 17% |
| 75 mph | 26 MPG | 19.9 MPG | 24% |
| 80 mph | 26 MPG | 18.2 MPG | 30% |
Our Real-World Speed MPG Adjuster re-scales the Infiniti QX65 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 QX65 MPG
What is the MPG of the Infiniti QX65?
The Infiniti QX65 gets up to 22 MPG combined (20 city / 26 highway) in the 2027 model year. Fuel economy varies by engine and trim — see the full table above for details.
Which Infiniti QX65 trim has the best fuel economy?
The Auto (S9), 4 cyl, 2.0 L trim offers the best combined fuel economy at 22 MPG. Smaller engines and front-wheel-drive configurations typically achieve the highest MPG.
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