Jaguar just revealed the Jaguar XF last week and now a few days later spies have caught a test mule of the highest-performance version of the XF. The test mule, which has a rear end of the S-Type and the front end of the XF, carries four exhaust pipes, huge wheels and low-profile tires and cross-drilled brake disks. A 4.2 liter supercharged V8 is expected under the hood. The Jaguar XF-R should follow later next year.
Head over to WorldCarFans for the full shots.