The 2021 Cadillac CT4 has a lot to prove. Luckily, its sharp styling matches its playful driving demeanor, and the CT4 serves as a desirable entry-level Caddy that doesn't ignore the wants and needs of enthusiast drivers. Two turbocharged four-cylinder engines are on offer: A 237-hp 2.0-liter comes standard, but we'd recommend the optional 309-hp 2.7-liter mill. Buyers looking for even more performance should hold out for the CT4-V Blackwing (reviewed separately), which debuts for 2021.