- Newest year: 2019
- Gas
- Hybrid
- Midsize cars
2017-2019 Buick LaCrosse MPG & Fuel Cost
3 model years · 23–29 MPG combined
15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)
Cheaper to fuel than 5 of 10 midsize car configurations, MY2019. Ranked against all rated configurations, not sales-weighted.
2017-2019 Buick LaCrosse at a glance
The 2017-2019 Buick LaCrosse covers 3 model years in the EPA database (8 configurations in all), rated 23–29 MPG combined. The newest model year, 2019, costs about $2,280 a year to fuel for its most efficient version, the eAssist 2.5L 4-cyl FWD (29 MPG), at regular gasoline $4.36/gal (U.S. average, Sep 2026). Powertrains over the years: gas and hybrid. EPA changed the ratings in 2018 and 2019. The best combined rating in the generation, 29 MPG, was reached in 2018 and 2019.
2017-2019 Buick LaCrosse by model year
What the 2019 LaCrosse 3.6L 6-cyl FWD costs to drive
Per month
$230
$2,760 a year ÷ 12
Per 25 miles
$4.60
Per 100 miles
$18.40
Five years
$13,800
5 × the yearly cost, prices held at today's level
vs the midsize car median
$110less a year
Class median $2,870 a year, MY2019
Based on 15,000 miles a year and regular gasoline $4.36/gal (U.S. average, Sep 2026).
2019 Buick LaCrosse MPG
Versus 2018: The most efficient configuration stays at 29 MPG. Its annual cost goes from $2,260 to $2,280, $20 more.
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| LaCrosse 3.6L 6-cyl FWD (Most efficient) | 3.6L 6-cyl | FWD | 20 | 30 | 24 | $2,760 |
| LaCrosse 3.6L 6-cyl AWD | 3.6L 6-cyl | AWD | 20 | 29 | 23 | $2,810 |
Hybrid configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| eAssist (Most efficient) | 2.5L 4-cyl | FWD | 25 | 35 | 29 | $2,280 |
2018 Buick LaCrosse MPG
23–29 MPG · $2,260–$2,840/yr
Versus 2017: The most efficient configuration moves from 25 to 29 MPG, up 4. Its annual cost goes from $2,650 to $2,260, $390 less.
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| LaCrosse 3.6L 6-cyl FWD (Most efficient) | 3.6L 6-cyl | FWD | 21 | 30 | 24 | $2,700 |
| LaCrosse 3.6L 6-cyl AWD | 3.6L 6-cyl | AWD | 20 | 29 | 23 | $2,840 |
Hybrid configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| eAssist (Most efficient) | 2.5L 4-cyl | FWD | 25 | 35 | 29 | $2,260 |
2017 Buick LaCrosse MPG
23–25 MPG · $2,650–$2,780/yr
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| LaCrosse 3.6L 6-cyl FWD (Most efficient) | 3.6L 6-cyl | FWD | 21 | 31 | 25 | $2,650 |
| LaCrosse 3.6L 6-cyl AWD | 3.6L 6-cyl | AWD | 20 | 29 | 23 | $2,780 |
Fuel cost by state
Yearly cost of the LaCrosse 3.6L 6-cyl FWD: $3,750 in California and $2,400 in Texas, a $1,350 difference.
- California $3,750
- Washington $3,470
- New York $2,760
- Florida $2,600
- Texas $2,400
Similar cars
Closest combined MPG among MY2019 midsize car models.
Generations
- 2011-2016 (2nd gen)
- 2017-2019 (3rd gen)
Frequently asked questions
What gas mileage does the 2017-2019 Buick LaCrosse get?
EPA rates the 2017-2019 Buick LaCrosse at 23–29 MPG combined across 8 configurations and 3 model years. The most efficient version, the 2019 eAssist 2.5L 4-cyl FWD, is rated 29 MPG (25 city, 35 highway). By powertrain: Gas: 23–25 MPG; Hybrid: 29 MPG.
Which years had the best MPG in the 2017-2019 Buick LaCrosse?
The eAssist 2.5L 4-cyl FWD reached the generation's best combined rating, 29 MPG, in 2018 and 2019. The lowest top rating, 25 MPG, was in 2017.
Did EPA ratings change during the 2017-2019 Buick LaCrosse?
Yes. Ratings changed in 2018 and 2019.
How does the 2017-2019 Buick LaCrosse compare with the previous generation?
The previous generation (2011-2016 Buick LaCrosse) is rated 20–29 MPG combined and costs $2,280–$3,330 a year to fuel; the 2017-2019 model is rated 23–29 MPG and costs $2,260–$2,840 a year.
How much does it cost to fuel a 2019 Buick LaCrosse per year?
Driving 15,000 miles a year at regular gasoline $4.36/gal (U.S. average, Sep 2026), the LaCrosse 3.6L 6-cyl FWD costs about $2,760 a year. Across all 3 configurations the cost runs $2,280–$2,810 a year. That is a $530 difference between the cheapest and the costliest configuration.
How much does it cost to drive a 2019 Buick LaCrosse 100 miles?
About $18.40 per 100 miles for the LaCrosse 3.6L 6-cyl FWD at regular gasoline $4.36/gal (U.S. average, Sep 2026), and between $15.20 and $18.73 across all configurations. That is the annual cost over 15,000 miles divided by 150.
How does the 2019 Buick LaCrosse compare with other midsize car configurations?
The LaCrosse 3.6L 6-cyl FWD costs about $2,760 a year to fuel, $110 less than the class median of $2,870, and less than 5 of 10 midsize car configurations. The comparison covers all 180 rated midsize car configurations for MY2019, not weighted by sales.
Is the 2019 Buick LaCrosse hybrid cheaper to fuel than the gas version?
Yes. The best hybrid (eAssist 2.5L 4-cyl FWD) is rated 29 MPG against 24 MPG for the best gas version (LaCrosse 3.6L 6-cyl FWD), 5 MPG more. At regular gasoline $4.36/gal (U.S. average, Sep 2026) that is $2,280 versus $2,760 a year, a saving of $480.
Is the 2019 Buick LaCrosse different from the 2018 model?
The most efficient configuration stays at 29 MPG. Its annual cost goes from $2,260 to $2,280, $20 more. EPA lists 3 configurations for 2019 against 3 configurations for 2018. See the 2018 Buick LaCrosse for that year.