Ford posted the largest February sales gains among Detroit's Big Three automakers, while General Motors reported a modest decline last month.
Ford, in its latest monthly report, said that sales increased by 20 percent, largely on the strength of record SUV sales for February.
The company's Lincoln brand, meanwhile, saw sales increase by 30 percent compared to February 2015.
Fiat Chrysler also reported an increase of 12 percent last month, the company's best February since 2006.
Its Jeep brand set a record for the month with a 23 percent sales increase. Ram Trucks increased by 27 percent -- a 14-year high -- and Dodge sales increased by 12 percent. The Fiat and Chrysler brands, however, fell by 9 percent and 26 percent, respectively.
GM attributed its monthly decline to planned reductions in rental deliveries and said that its retail increased 7 percent. Buick and Cadillac showed modest sales increases, while Chevrolet fell slightly and GMC dropped by nearly 7 percent.
Among overseas automakers, Toyota sales increased by just more than 4 percent. Toyota models sold at a 4.7 percent higher clip while its Lexus line fell by nearly 16 percent.
Fellow Japanese companies Honda and Nissan, meanwhile, increased sales by 12.8 percent and 10.5 percent. Their flagship brands each set new February records for the U.S., while their luxury brands -- Honda's Acura and Nissan's Infiniti -- fell by 2 percent and 11 percent.
Those six companies comprised more than 75 percent of the U.S. auto market in January, according to numbers from The Wall Street Journal.