Although it was expected to be replaced by the CT6, the XTS is back unchanged for 2017. Even better, the more athletic XTS V-Sport, which features a twin-turbo, 3.6-litre V6 whose 410 horsepower drives all four wheels, is sticking around too. However, most versions of the XTS will settle for 304 horsepower from a naturally aspirated V6. All-wheel drive is available. The XTS is built in Oshawa, Ontario.