Here’s a 2020 Cadillac CT4 Premium Luxury. The Cadillac CT4 is a compact luxury sedan and is the successor to the ATS. It’s been in production since 2019 (the first model year is 2020). The engine is a 2.7 liter turbocharged L3B straight-4 that produces 309 horsepower and 348 pound-feet of torque. The transmission is a 10-speed automatic.