The Cadillac CT4 is a compact executive 4-door sedan that is planned to be manufactured and marketed by Cadillac. Cadillac President Steve Carlisle confirmed that the CT4 will debut in 2019. Cadillac will assemble the CT4 at the Lansing Grand River Assembly plant in Lansing, Michigan. It is a successor to the Cadillac ATS and a smaller version of the newly announced Cadillac CT5. Cadillac has been testing prototypes of the CT4 on public roads since early 2018. The Cadillac CT4 will sit below the CT5 in Cadillac's lineup. It debuted in 2019 as a 2020 model as a replacement for the ATS and as a smaller version of the CT5. The base CT4 models were introduced in September 2019. Following Cadillac's new "Y" trim strategy, the CT4 is available in base Luxury trim, as well as Sport and Premium Luxury trims. The base engine is a 2.0-liter turbocharged four-cylinder (I4), producing 237 hp (177 kW) and 258 lb ft (350 Nm) torque. Optional with the Premium Luxury is a 2.7-liter turbo I4, producing 309 hp (230 kW) and 348 lb ft (472 Nm) torque. Cadillac unveiled a high performance variant, the CT4-V, on May 30, 2019 alongside the CT5-V to replace the ATS-V. It is powered by a high-output 2.7-liter turbocharged I4, producing 325 hp (242 kW) and 380 lb ft (515 Nm) torque.