For 2007, new variable-valve-timing-and-intake tweaks to Jaguar's familiar supercharged 4.2-liter V-8 yield 30 more horses and 14 more pound-feet of torque over last year's XKR.

Looking to turn heads without breaking the bank? In a world full of expensive supercars, there are still affordable options ...

The “Great Dixie Brit Car Rallye’’ pitted owners of classic MGAs, modern Jaguars and lots in between to a 75-mile time/speed/distance run around the Jacksonville area.

Jaguar is unveiling the 550-hp XKR-S at the Geneva auto show. Read about and see pictures of the 2012 XKR-S at Car and Driver.

Part two: Road Test - Jaguar XKR-S - $340,000 ... with my co-driver providing rally style pace notes on the fly and yet, still no body roll. The XKR-S remains bolt upright through corners.

Jaguar's new XKR: Brit meets brawn Columnist Sue Callaway returns to Jaguar - for a sneak peek at a car she helped launch. By Sue Zesiger Callaway, Fortune . May 15 2007: 5:18 PM EDT ...

Jaguar s 4.0-liter dual-overhead-cam V-8 engine produces 290 hp in the regular XK8 coupe and convertible. Stepping up to the XKR brings a supercharged edition of that engine, which churns out 370 hp.

Powered by a supercharged 5.0-liter V-8 engine paired to a six-speed ZF automatic, the XKR-S GT serves up 550 hp and 502 lb-ft of torque. Jaguar says this will get the racer to reach 60 mph in 3.9 ...

With the 2010 Jaguar XKR, the "tuned" version of the XK, Jaguar has buttoned things down, making it a serious rival for former family members in the Aston range as well as AMG-tuned Mercedes SLs ...

The XKR-S manages to balance Jaguar’s historic mantle of grace with pace. To be fair, though, we figured it’d be the chassis that reminds us that the XK dates to 2005, ...

The XKR-S can’t go that fast, its top speed is electronically limited to 186 mph, but Jaguar contends that even the convertible can hit that mark with the roof open.