V6 Engine is Powerful, Responsive and Sounds it
While the turbocharged 2.0-liter 4-cylinder provides solid power and is a great enthusiast car with it’s available 6-speed manual, the most powerful engine available in the ATS is a 3.6-liter V6, making 321-hp and 275 lb-ft of torque.
The ATS is made for this V6 powertrain. It’s the soul of this genuine American luxury sports sedan. It growls like a big cat, and gets going with the ferocity of one too. While the turbo-four is impressive in its own way, the V6 delivers more power while also delivering the smoothness that’s expected from the Cadillac nameplate.