2017 Jaguar XJ: The 2017 Jaguar XJ carries over mostly unchanged from 2016. The XJ serves as the Jaguar brand's flagship sedan and competes with the BMW 7-Series, Lexus LS, and Mercedes-Benz S-Class. A long-wheelbase version is available.The XJ is powered by a supercharged 3.0-liter V6 that mates to an eight-speed automatic transmission or a 5.0-liter supercharged V8 that makes 470 horsepower and pairs to an eight-speed automatic transmission. It's available with rear- or all-wheel drive. EPA-estimated fuel-economy ranges from 15 mpg city to 27 mpg highway.Available significant features include heated/cooled front seats, heated rear seats, navigation, infotainment system, USB, smartphone integration, adaptive cruise control, in-car Wi-Fi, and premium audio.Available safety features include traction control, stability control, 360-degree camera, rear traffic-detection, closing vehicle sensing, semi-automated parking assist, and dual-front, front-side and side-curtain airbags.The 2017 Jaguar XJ has a base price of $74,400.