The CT4 is the all-new small luxury sedan from Cadillac. It comes standard with rear-wheel drive, though all-wheel drive is optional. Customers also have a choice of two turbocharged four-cylinder engines. The base 2.0-litre unit produces 237 horsepower through an eight-speed automatic transmission. The larger 2.7-litre mill is rated at 309 or 325 horsepower depending on the trim level while its transmission gets two extra gears. Cadillac promises exceptional agility for the segment.