The 2019 Cadillac XT4 compact crossover is the most important new vehicle from Cadillac in nearly a decade. Destined to challenge the BMW X3, Audi Q5, and Mercedes-Benz GLC-Class, the XT4 has not only the requisite alphanumeric name, but also a spritely 2.0-liter, turbocharged engine that’s standard for the class. With 237 horsepower and 258...
