For some drivers, the regular Jaguar XK's 385 horsepower V8 just won't cut it. For those folks, there's the Jaguar XKR coupe, powered by a 510 horsepower supercharged V8. Peak power 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.

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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.

Standard features include adaptive headlights that swivel in corners, aluminum-finish side window surround, stability control, keyless entry and start, a seven-inch touch screen to control various car functions, and a body-colored spoiler.

Options include a 525-watt Alpine premium sound system, Sirius satellite radio, soft-grain leather, a leather-wrapped instrument panel, and a heated steering wheel.

All XKRs are fitted standard with an iPod and USB connectivity interface, an air quality sensor, front park assist and electrochromic and heated power fold-back mirrors.