2015 Buick LaCrosse

Sedan Regular
Buick LaCrosse 2015
21MPG Combined
3 Trims
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Updated February 27, 2026

The 2015 Buick LaCrosse Sedan provides 20–21 combined MPG depending on trim. We’ve compiled EPA fuel economy data, NHTSA safety ratings, and recall history so you can make an informed decision.

2015 Buick LaCrosse Specifications

SpecValue
Combined MPG20–21 combined MPG depending on trim
City MPG18
Highway MPG28
Body StyleSedan
Fuel TypeRegular
DriveFWD
Available Trims3

Available Trims

TrimMPG (City/Hwy/Combined)EngineTransmission
6 cyl18/28/213.6L 6cylAutomatic (S6)
6 cyl18/28/213.6L 6cylAutomatic (S6)
6 cyl17/26/203.6L 6cylAutomatic (S6)

Annual Fuel Cost

Based on EPA estimates, the 2015 Buick LaCrosse costs approximately $2,133 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.

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