10.Cadillac CTS
The highly luxurious Cadillac CTS is another proud American offering in the automotive industry. The Cadillac CTS is in the right spot in 2015 to challenge some of the premium brands in the market including BMW and Audi. Aside from the opulent interior finish and executive -looking exterior, the Cadillac CTS also boasts three engine types including the 3.5-liter V6 engine that can offer up to 420 horsepower.