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2018 Buick LaCrosse Essence 2.5L
Shown: 2018 Buick LaCrosse Essence 2.5L. Photo: Kevauto, CC BY-SA 4.0, via Wikimedia Commons
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  • MY2011–2019

Buick LaCrosse MPG & Fuel Cost by Year

9 model years · 2011–2019

24 MPG
Combined
20 MPG
City
30 MPG
Highway
Annual cost · MY2019 LaCrosse 3.6L 6-cyl FWD
$2,760

15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)

All Buick models

Buick LaCrosse fuel economy at a glance

EPA has rated the Buick LaCrosse for 9 model years, 2011 to 2019. Across those years its combined rating runs 20–29 MPG. The latest model year, 2019, has 3 configurations rated 23–29 MPG combined and costing $2,280–$2,810 a year to fuel at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2011 is the 2019 eAssist 2.5L 4-cyl FWD, at 29 MPG.

Buick LaCrosse MPG by year

202224262830 201120172019 Gas Hybrid 202224262830 201120172019 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.
Buick LaCrosse: combined fuel economy and annual fuel cost for each model year, grouped by generation
Year Gas (MPG)Hybrid (MPG) $/yr
2017-2019 (3rd gen) Generation page
2019 23–2429 $2,280–$2,810
2018 23–2429 $2,260–$2,840
2017 23–25— $2,650–$2,780
2011-2016 (2nd gen) Generation page
2016 20–2128 $2,310–$3,250
2015 20–2128 $2,310–$3,260
2014 20–2128 $2,310–$3,220
2013 20–2129 $2,280–$3,330
2012 20–2128 $2,320–$3,330
2011 20–23— $2,890–$3,330

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.

Buick LaCrosse generations

2 generations between 2011 and 2019. Open one for the table of every model year and configuration.

2018 Buick LaCrosse Essence 2.5L

2017-2019 Buick LaCrosse (3rd gen)

23–29 MPG · $2,260–$2,840/yr
2009 Buick LaCrosse CXL

2011-2016 Buick LaCrosse (2nd gen)

20–29 MPG · $2,280–$3,330/yr

2019 powertrain options

Gas · 3.6L
Combined
23–24 MPG
Per year
$2,760–$2,810
See gas configurations
Hybrid · 2.5L
Combined
29 MPG
Per year
$2,280
See hybrid configurations
EPA ratings: fueleconomy.gov file of Sep 29, 2026 · regular gasoline $4.36/gal (U.S. average, Sep 2026) · 15,000 mi/yr, 55% city / 45% highway · How we calculate

Frequently asked questions

What is the Buick LaCrosse's gas mileage by year?

EPA combined ratings for the Buick LaCrosse run 20–29 MPG across model years 2011 to 2019. The latest year, 2019, is rated 23–29 MPG.

Which Buick LaCrosse model year has the best gas mileage?

The 2019 Buick LaCrosse eAssist 2.5L 4-cyl FWD has the highest combined rating since 2011, at 29 MPG.

How much does a Buick LaCrosse cost to fuel per year?

For MY2019, EPA-rated configurations cost $2,280–$2,810 a year to fuel, driving 15,000 miles at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient one costs $2,280.

Has the Buick LaCrosse's fuel economy improved over time?

Yes. The most efficient configuration moved from 23 MPG in 2011 to 29 MPG in 2019, 6 MPG more.

Is there a hybrid, plug-in or electric Buick LaCrosse?

Yes. Hybrid versions are rated from 2012 to 2019 (28–29 MPG).

How many generations of the Buick LaCrosse are there?

EPA data covers 2 generations of the Buick LaCrosse: 2017-2019, 2011-2016. Each has its own page with a table for every model year.