2015 Jaguar XKR

For some drivers, the regular Jaguar XK's 385 horsepower V8 just doesn't cut it for a luxury coupe. It's for these folks that Jaguar makes the XKR, which produces 510 horsepower from its supercharged V8.

Recent Changes
Jaguar is commemorating the XK's last year on the market with a limited-edition model called Final Fifty. As its name implies, just 50 examples - 25 coupes and 25 convertibles - of the XKR Final Fifty will be built.

Peak power for this force-fed 5.0-liter V8 arrives at 6000 rpm, while peak torque of 461 pound-feet comes from 2500 to 5500 rpm. The sprint from zero-to-60 mph takes just 4.6 seconds, while fuel economy checks in at 15 mpg in the city and 22 mpg on the highway.

As with Jaguar's other "R" models, the XKR coupe has high-performance brakes to improve stopping power, plus a more aggressive suspension setup for a firmer ride, less body roll, and lower ride height.

To differentiate it from the XK, the R model has unique styling cues such as a more aggressive front fascia, air intakes on the hood, aluminum-finish grilles, more creases on the hood, and quad exhaust pipes. Customers can chose between 19- and 20-inch wheels for the XKR.

To give the XKR a sportier feel, the suspension system makes use of up-rated springs and dampers, plus a recalibrated computer to control the dynamic suspension settings.

A six-speed automatic transmission with steering-wheel-mounted paddles is standard. On downshifts, the system creates a throttle blip to shorten over-run shifts. An "active" exhaust system ensures the XKR is quiet while cruising, yet still able to create purposeful V8 roar under hard acceleration.

Inside, the XKR features a simple but elegant cabin design along with the highest quality leather and wood (aluminum trim is optional) and all of the entertainment and convenience devices one could wish for in a luxury coupe.

Standard features include a navigation system with a seven-inch LCD touch screen, a 525-watt, 14-speaker Bowers & Wilkins sound system, dual-zone automatic climate control, Bluetooth smartphone connectivity, a rear parking camera and more.

Buyers looking for a more responsive ride can select the optional Dynamic Pack, which upgrades the suspension to the even tighter and more handling-focused setup from the fire-breathing XKR-S.

XKR Final Fifty
The Final Fifty edition adds a louvered hood from the high-performance XKR-S GT, "Ultimate Black" paint, a center console badge and inscribed doorsill treadplates. Sport seats with diamond-stitched white leather and a suede steering wheel are also fitted.

More than just a cosmetic package, the Final Fifty also receives a number of chassis elements borrowed from the XKR-S, including forged and fully machined front suspension components with dedicated spring and damper settings, an upgraded Adaptive Dynamics suspension system, and a 10mm lower ride height.

Additionally, the normally-optional Dynamic Pack and Performance Pack are standard, bringing extras such as 20-inch wheels, an upsized rear wing, special side sills, a rear diffuser and a performance exhaust system.

Occupant Safety
Standard safety features include dual front, front side airbags and full-length side curtain airbags in addition to traction and stability control systems and electronic brake-force distribution.

Key Competitors
Though hugely powerful, the XKR is still more of a grand tourer than a true sports car. It competes against other potent luxury coupes like the BMW 650i, the Maserati GranTurismo S and the Mercedes-Benz CL63 AMG.