The 2015 Cadillac ATS Coupe gives you compact luxury with a sporty two-door design, responsive handling, and a driver-focused cabin. Engine choices include a 2.0L turbocharged four-cylinder and a stronger 3.6L V6, with rear-wheel drive or available all-wheel drive. Inside, you get premium materials, supportive seating, and modern technology for its model year. Its smaller dimensions also make the ATS Coupe easier to handle around town. If you want a used luxury coupe that balances performance, comfort, and…