All three versions of the CTS-V rate 14 mpg city and 19 mpg highway with the manual transmission, and 12/18 mpg with the automatic.
The 2013 Cadillac CTS-V is a rather large, heavy, and incredibly high-performance luxury vehicle, no matter whether you choose the Coupe, Sedan, or Sport Wagon. Accordingly, it isn't going to win any awards for gas mileage.
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