Replacing the Jaguar S-Type, the Jaguar XF is a luxurious performance sedan available with modern style and features, but a distinctly Jaguar sense of charm. In supercharged models, the XF is also extremely fast and sporty. Priced from the upper $40,000s into the $80,000s, the Jaguar XF competes with the Mercedes-Benz E Class, BMW 5-Series, and...