Arriving two years after the introduction of a sedan, Cadillac's ATS line is expanded in 2015 with an ATS Coupe. Constructed on the same platform as the ATS Sedan, the Cadillac ATS Coupe is longer, wider and lower compared to the four-door model. An indirect replacement to the CTS Coupe, the 2015 Cadillac ATS Coupe captured an identical level of sport essence in what became the brand's first compact two-door. A 2+2 passenger cabin echos the exterior styling direction matching both performance and comfort. Available Cadillac CUE infotainment system and a 12-speaker surround sound audio suite are among striking features found inside the ATS Coupe. Unlike the sedan, the ATS Coupe is not offered with the 2.5-liter four-cylinder engine as base equipment. To better accent performance, the Cadillac ATS Coupe debuted in 2015 powered by either a 272-horsepower 2.0-liter turbocharged four-cylinder or a 3.6-liter V-6 that produces 321 horsepower. For 2016, the Cadillac ATS Coupe offered an enhanced 335-horsepower 3.6-liter V-6 powerplant.