U.S. auto sales leader General Motors, whose CEO was testifying to Congress later on the recall of millions of cars, delayed announcing its sales figures for March by several hours on Tuesday.
The company cited computer glitches for the delay.
Industry observers are anxious to see if the massive GM recalls have hurt company sales. Industry research firm Edmunds.com forecast GM's U.S. sales for March rose only 0.5 percent.
Meanwhile, Chrysler said its sales rose 13 percent last month, with Ram trucks recording their best March sales in 10 years.
Reid Bigland, chief of U.S. sales for Chrysler, said Ram truck sales rose 26 percent to 42,532. Cherokee SUV sales of nearly 14,000 were 10 times year-ago sales of the vehicle it replaced in the automaker's lineup, the Jeep Liberty SUV.
Chrysler Group, a unit of Fiat Chrysler was the first major automaker to report U.S. March sales on Tuesday. Later, Ford reported a 3 percent rise in U.S. sales and Toyota a 5 percent rise.
Cold weather and snow kept many consumers away from dealer showrooms in early March, but the second half of the month showed promise that April will be a strong sales month, said sales executives from Ford and Toyota.