- Gas
- Midsize cars
- MY2005–2010
Buick Lacrosse/Allure MPG & Fuel Cost by Year
6 model years · 2005–2010
15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)
Buick Lacrosse/Allure fuel economy at a glance
EPA has rated the Buick Lacrosse/Allure for 6 model years, 2005 to 2010. Across those years its combined rating runs 19–23 MPG. The latest model year, 2010, has 4 configurations rated 19–23 MPG combined and costing $2,840–$3,440 a year to fuel at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2005 is the 2010 Lacrosse/Allure 2.4L 4-cyl FWD, at 23 MPG.
Buick Lacrosse/Allure MPG by year
| Year | Gas (MPG) | $/yr |
|---|---|---|
| 2010 (2nd gen) Generation page | ||
| 2010 | 19–23 | $2,840–$3,440 |
| 2005-2009 (1st gen) Generation page | ||
| 2009 | 19–21 | $3,110–$3,440 |
| 2008 | 19–21 | $3,110–$4,230 |
| 2007 | 20–21 | $3,110–$3,270 |
| 2006 | 20–21 | $3,110–$3,270 |
| 2005 | 20–21 | $3,110–$3,270 |
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/Allure generations
2 generations between 2005 and 2010. Open one for the table of every model year and configuration.
2010 powertrain options
More Buick models
Frequently asked questions
What is the Buick Lacrosse/Allure's gas mileage by year?
EPA combined ratings for the Buick Lacrosse/Allure run 19–23 MPG across model years 2005 to 2010. The latest year, 2010, is rated 19–23 MPG.
Which Buick Lacrosse/Allure model year has the best gas mileage?
The 2010 Buick Lacrosse/Allure Lacrosse/Allure 2.4L 4-cyl FWD has the highest combined rating since 2005, at 23 MPG.
How much does a Buick Lacrosse/Allure cost to fuel per year?
For MY2010, EPA-rated configurations cost $2,840–$3,440 a year to fuel, driving 15,000 miles at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient one costs $2,840.
Has the Buick Lacrosse/Allure's fuel economy improved over time?
Yes. The most efficient configuration moved from 21 MPG in 2005 to 23 MPG in 2010, 2 MPG more.