The 2009 Cadillac CTS displays a cutting-edge design supported by a strong dose of state-of-the-art mechanical underpinnings. There are two engine choices for the CTS, a 3.6 liter 263 horsepower V6 and a direct injection 3.6 liter 304 horsepower V6 engine. Fuel economy is estimated by the EPA at 17 MPG city and 26 highway.