Aston Martin DBX V8 Fuel Economy (MPG)

Name: Aston Martin DBX V8 MPG & Fuel Economy
Creator: AutoSpecData
License: https://creativecommons.org/licenses/by/4.0/

What is the real-world gas mileage of a 2024 Aston Martin DBX V8?

The 2024 Aston Martin DBX V8 gets up to 16 MPG combined (14 city / 20 highway) in EPA testing.

Latest model year (2024):

The Aston Martin DBX V8 gets up to 16 MPG combined (14 city / 20 highway) in the Auto 9-spd, 8 cyl, 4.0 L trim.

Verifiedfueleconomy.gov · Verified August 11, 2026

Overview MPG Engine Specs Fuel Cost Transmission Drivetrain Vehicle Class Maintenance

Aston Martin DBX V8 MPG — All Years

Year	Trim	Engine	Fuel	City (MPG)	Hwy (MPG)	Combined (MPG)
2024	Auto 9-spd, 8 cyl, 4.0 L	8 4.0L	Premium Gasoline	14	20	16
2023	Auto 9-spd, 8 cyl, 4.0 L	8 4.0L	Premium Gasoline	14	20	16
2022	Auto 9-spd, 8 cyl, 4.0 L	8 4.0L	Premium Gasoline	14	20	16
2021	Auto 9-spd, 8 cyl, 4.0 L	8 4.0L	Premium Gasoline	14	18	15

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.

Aston Martin DBX V8 data analysis

How Aston Martin DBX V8 combined fuel economy varies

Across 4 configurations recorded for the 2021 through 2024 Aston Martin DBX V8, combined fuel economy runs from 15 MPG to 16 MPG. The strongest figure belongs to the 2022 Aston Martin DBX V8 (Auto 9-spd, 8 cyl, 4.0 L) at 16 MPG, and the weakest to the 2021 car (Auto 9-spd, 8 cyl, 4.0 L) at 15 MPG — a spread of 7%. The narrow spread means any year of the Aston Martin DBX V8 in this table behaves much like the others, so you can shop on price, condition and mileage rather than chasing a particular model year.

What changed for 2024

Average combined fuel economy for the 2024 Aston Martin DBX V8 is 16 MPG, against 16 MPG for the 2023 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 Aston Martin DBX V8 data

This page lists every 2021 through 2024 Aston Martin DBX V8 record we hold for this measurement — 4 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.

Where these Aston Martin DBX V8 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 Aston Martin DBX V8 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	20 MPG	20 MPG	0%
65 mph	20 MPG	18.3 MPG	9%
70 mph	20 MPG	16.7 MPG	17%
75 mph	20 MPG	15.3 MPG	24%
80 mph	20 MPG	14 MPG	30%

Our Real-World Speed MPG Adjuster re-scales the Aston Martin DBX V8 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 DBX V8 MPG

What is the MPG of the Aston Martin DBX V8?

The Aston Martin DBX V8 gets up to 16 MPG combined (14 city / 20 highway) in the 2024 model year. Fuel economy varies by engine and trim — see the full table above for details.

Which Aston Martin DBX V8 trim has the best fuel economy?

The Auto 9-spd, 8 cyl, 4.0 L trim offers the best combined fuel economy at 16 MPG. Smaller engines and front-wheel-drive configurations typically achieve the highest MPG.