A super-powerful touring car isn't expected to have excellent fuel economy, and the Jaguar XK lineup meets those expectations in the real world, though its EPA numbers aren't all that awful.
With only V-8 engines under the hood, the 2013 XK--and supercharged XKR and XKR-S--log gas-mileage numbers that fall several digits below cars like the latest Porsche 911. The Jaguars do as well as they do, given their prodigious power, because of their relatively lightweight aluminum body structures and six-speed automatic gearboxes.
This year, the EPA says the standard 385-horsepower Jaguar XK coupe earns 16 miles per gallon city, and 24 miles per gallon highway. As a convertible, its highway mileage drops to 22 mpg.
With the supercharger, the net effect is the same for coupe and convertible: both body styles are rated by the EPA t 15/22 mpg, decent figures for a car with 510 horsepower.Jaguar has recently announced plans to introduce hybrid technology to its lineup, but it's not likely to make it into today's XK, which is due for a replacement in the next two or three years.