Built on a rear-drive platform, available with AWD, the ATS is the smallest Cadillac model and the most popular, too. With coupe and sedan body styles, the ATS offers a dynamic driving experience and plenty of technological features. A 202-horsepower, 2.5-litre 4-cylinder engine is standard, while a 2.0-litre turbo four and a 3.6-litre V6 with 272 and 321 horsepower, respectively, also stand as powertrain choices. A high-performance ATS-V is added for 2016, boasting a 455-horsepower, twin-turbo 3.6-litre V6.