2019 Buick LaCrosse fuel economy
The 2019 Buick LaCrosse is rated at 23–29 MPG combined by the EPA, from 23 MPG (3.6 L 6-cyl, Automatic (S9), All-Wheel Drive) to 29 MPG (2.5 L 4-cyl, Automatic (S6), Front-Wheel Drive). EPA size class: Midsize Cars.
MPG by version
| Version | City | Hwy | Comb. | L/100 km | UK MPG | Fuel cost/yr* |
|---|---|---|---|---|---|---|
| LaCrosse eAssist 2.5 L 4-cyl, Automatic (S6), Front-Wheel Drive · Hybrid · Regular Gasoline | 25 | 35 | 29 | 8.1 | 35 | $2,300 |
| LaCrosse 3.6 L 6-cyl, Automatic (S9), Front-Wheel Drive · Regular Gasoline | 20 | 30 | 24 | 9.8 | 29 | $2,800 |
| LaCrosse AWD 3.6 L 6-cyl, Automatic (S9), All-Wheel Drive · Regular Gasoline | 20 | 29 | 23 | 10.2 | 28 | $2,900 |
* EPA estimate of yearly fuel (or electricity) cost for 15,000 miles with 55 % city driving, at the fuel prices EPA used for this model year. Use the fuel cost comparison with your own mileage and prices.
About these numbers
EPA ratings come from standard laboratory tests adjusted to reflect real-world driving, so they are best for comparing vehicles. Your own figure will vary with speed, temperature, load, tires and driving style — measure it with the MPG calculator. If you have fitted larger tires, correct the reading with the tire size and fuel economy calculator.
Source: U.S. Environmental Protection Agency and U.S. Department of Energy, fueleconomy.gov. Original data (downloaded 2026-09-29). Data processed by us; errors in processing are ours, not the publisher's.