Cadillac XTS full-size luxury sedan is offered with front- or all-wheel drive. A 304-horsepower, 3.6-liter V-6 engine is standard, and the V-Sport trim level uses a twin-turbo version of the V-6 that produces 410 hp. The XTS gets updated front and rear styling, and the car gets new tire designs to improve ride comfort and reduce noise. There’s also more sound-deadening material, too. The XTS also gets an updated version of the Cadillac User Experience, or CUE, multimedia system.