General Motors employee Peggy Burnside inspects a 2012 Chevrolet Sonic as it rolls off the assembly line at the GM Orion Assembly Plant Wednesday, September 14, 2011 in Lake Orion, Michigan. The 2012 Chevrolet Sonic with a 1.4L turbo delivers an EPA-estimated 40 mpg on the highway with a 6-speed manual transmission and city fuel economy of 29 mpg. The Sonic’s 1.8L manual gets city fuel economy of 26 and 35 highway and the automatic get 25 mpg city and 35 highway. (Photo by John F. Martin for General Motors)