GM is also touting improvements in the compact segment. It said Chevrolet's small and compact car sales rose 229% between the second quarter of 2010 and the second quarter of 2013. GM attributed the gains to its inroads among millennials, also known as Generation Y (Wikipedia said that in describing millennials, "commentators use beginning birth dates from the early 1980s to the early 2000s").

"Nearly four in 10 millennial buyers are purchasing within the compact car segment," said Dora Nowicki, Chevrolet Sonic marketing director, in a prepared statement. .

GM said millennials are buying the Cruze, the Sonic and the Spark mini-car. "Leading the segment is the Cruze, which is among the top-selling Chevrolet vehicles to those under 25," GM said. "One in four Sonic and Spark buyers are also under 25, while almost six in 10 buyers of those cars are new to Chevrolet." In July, Cruze sales rose 70% to 25,447 and Cruze was the No. 2 selling compact car after Honda ( HMC) Civic.

-- Written by Ted Reed in Charlotte, N.C.

>To contact the writer of this article, click here: Ted Reed

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