* XF 3.0L V6: This was the base engine, offering 251 horsepower and 248 lb-ft of torque.
* XF Supercharged 3.0L V6: This engine boasted 335 horsepower and 332 lb-ft of torque.
* XF 5.0L V8: This powerful engine produced 385 horsepower and 380 lb-ft of torque.
* XF Supercharged 5.0L V8: This was the top-of-the-line engine, delivering 510 horsepower and 461 lb-ft of torque.
It's important to specify which trim level you're interested in when asking about the engine size, as the 2011 Jaguar XF came in a variety of configurations.
