Acura RLX Vehicle Class & Size

The EPA classifies the 2020 Acura RLX as a Midsize Cars, a rating based on body style and interior volume.

Latest model year (2020):

The Acura RLX is classified by the EPA as a Midsize Cars.

Verifiedfueleconomy.gov · Verified August 9, 2026

Acura RLX Vehicle Class — All Years

YearTrimVehicle ClassDriveFuel TypeMPG Comb.
2020Config 1 of 2Auto (AM-S7), 6 cyl, 3.5 LMidsize CarsAll-Wheel DrivePremium Gasoline28
2020Config 2 of 2Auto (S10), 6 cyl, 3.5 LMidsize CarsFront-Wheel DrivePremium Gasoline23
2019Config 1 of 2Auto (AM-S7), 6 cyl, 3.5 LMidsize CarsAll-Wheel DrivePremium Gasoline28
2019Config 2 of 2Auto (S10), 6 cyl, 3.5 LMidsize CarsFront-Wheel DrivePremium Gasoline23
2018Config 1 of 2Auto (AM-S7), 6 cyl, 3.5 LMidsize CarsAll-Wheel DrivePremium Gasoline28
2018Config 2 of 2Auto (S10), 6 cyl, 3.5 LMidsize CarsFront-Wheel DrivePremium Gasoline23
2017Config 1 of 2Auto (AM-S7), 6 cyl, 3.5 LMidsize CarsAll-Wheel DrivePremium Gasoline29
2017Config 2 of 2Auto (S6), 6 cyl, 3.5 LMidsize CarsFront-Wheel DrivePremium Gasoline23
2016Config 1 of 2Auto (AM7), 6 cyl, 3.5 LMidsize CarsAll-Wheel DrivePremium Gasoline30
2016Config 2 of 2Auto (S6), 6 cyl, 3.5 LMidsize CarsFront-Wheel DrivePremium Gasoline23
2015Auto (S6), 6 cyl, 3.5 LMidsize CarsFront-Wheel DrivePremium Gasoline23

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.

Acura RLX data analysis

How to read this Acura RLX data

This page lists every 2015 through 2020 Acura RLX record we hold for this measurement — 11 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 Acura RLX 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 Acura RLX 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.

Frequently Asked Questions About RLX Vehicle Class

What class of vehicle is the Acura RLX?

The EPA classifies the Acura RLX as a Midsize Cars. This classification is based on interior volume and body style and affects how its fuel economy is compared with other vehicles.

Is the Acura RLX considered a small or large vehicle?

Based on its EPA class (Midsize Cars), the Acura RLX is grouped with vehicles of similar size and interior volume. The class can change between model years when the body is redesigned.

View full Acura RLX specs

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