Gallonly
2017 Acura RLX
Shown: 2017 Acura RLX. Photo: Mr.choppers, CC BY-SA 3.0, via Wikimedia Commons
  • Gas
  • Hybrid
  • Midsize cars
  • MY2014–2020

Acura RLX MPG & Fuel Cost by Year

7 model years · 2014–2020

23 MPG
Combined
20 MPG
City
29 MPG
Highway
Annual cost · MY2020 RLX 3.5L 6-cyl FWD
$3,460

15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)

All Acura models

Acura RLX fuel economy at a glance

EPA has rated the Acura RLX for 7 model years, 2014 to 2020. Across those years its combined rating runs 23–30 MPG. The latest model year, 2020, has 2 configurations rated 23–28 MPG combined and costing $2,870–$3,460 a year to fuel at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2014 is the 2016 Hybrid 3.5L 6-cyl AWD, at 30 MPG.

Acura RLX MPG by year

2224262830 20142020 Gas Hybrid 2224262830 20142020 Gas Hybrid
Combined MPG: the line is the most efficient configuration, the shaded band reaches down to the least efficient. Dotted lines mark new generations.
Acura RLX: combined fuel economy and annual fuel cost for each model year, grouped by generation
Year Gas (MPG)Hybrid (MPG) $/yr
2014-2020 (2014) Generation page
2020 2328 $2,870–$3,460
2019 2328 $2,870–$3,460
2018 2328 $2,870–$3,460
2017 2329 $2,770–$3,430
2016 2330 $2,720–$3,430
2015 23— $3,430
2014 2330 $2,720–$3,430

Costs use the current EIA price set and 15,000 miles a year for every year, so years are comparable. Green marks the best year for each powertrain.

Acura RLX generations

1 generations between 2014 and 2020. Open one for the table of every model year and configuration.

2020 powertrain options

Gas · 3.5L
Combined
23 MPG
Per year
$3,460
See gas configurations
Hybrid · 3.5L
Combined
28 MPG
Per year
$2,870
See hybrid configurations
EPA ratings: fueleconomy.gov file of Sep 29, 2026 · premium gasoline $5.36/gal (U.S. average, Sep 2026) · 15,000 mi/yr, 55% city / 45% highway · How we calculate

Frequently asked questions

What is the Acura RLX's gas mileage by year?

EPA combined ratings for the Acura RLX run 23–30 MPG across model years 2014 to 2020. The latest year, 2020, is rated 23–28 MPG.

Which Acura RLX model year has the best gas mileage?

The 2016 Acura RLX Hybrid 3.5L 6-cyl AWD has the highest combined rating since 2014, at 30 MPG.

How much does a Acura RLX cost to fuel per year?

For MY2020, EPA-rated configurations cost $2,870–$3,460 a year to fuel, driving 15,000 miles at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient one costs $2,870.

Has the Acura RLX's fuel economy improved over time?

No. The most efficient configuration moved from 30 MPG in 2014 to 28 MPG in 2020, 2 MPG less.

Is there a hybrid, plug-in or electric Acura RLX?

Yes. Hybrid versions are rated from 2014 to 2020 (28–30 MPG).

Which Acura RLX model years have the same ratings?

EPA lists identical ratings as the previous year for 2019, 2020. The generation pages mark those years "same EPA ratings" and point to the year that holds the full table.