|High gas prices, fuel economy requirements and vast improvements in technology are combining to shrink the engines in American cars and trucks. More than half of new vehicles sold in the U.S. this year have four-cylinder engines, compared with 36 percent just five years ago:|
|Engine Type 2007 Percentage 2012 Percentage (Through May)|
|Four Cylinder 36 52|
|Six Cylinder 40 33|
|Eight Cylinder 22 13|
|Other 2 2|
|Source: J.D. Power and Associates|
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