A 4.2-liter V-8 engine provides enough power to make the Jaguar XF Supercharged a respectable sedan, but makes no attempts at living up to the British brand’s racing pedigree. But when Jaguar unveiled its supercharged version of the XF sedan, we found ourselves wondering why—when Jaguar traditionally uses an “R” to distinguish its supercharged racing-performance models—the 470-horsepower version did not earn that designation. As it turns out, Jaguar was being canny, reserving its elite logo for the 2010 XFR, which features a brand-new 5-liter V-8 that delivers 510 hp for a 0-to-60-mph sprint of 4.7 seconds. You can definitely see the XFR coming, with its supercharged swagger, additional hood vents and revised front fascia. Picking up where the XF left off, the XFR is head and shoulders above any other Jaguar ever made, and has enough heart and soul to take on the German competition.