Jaguar XF!

Jaguar has pulled the wraps off its latest diesel-powered XF sedan model featuring not only a revised, more powerful and efficient twin-turbo engine, but a sportier "S" designated performance version said to give "V-8 levels of performance."


Underneath the cat's hood lies a reworked AJ-V6D Gen III S 3.0L diesel good for 236 hp in base form and 271-hp/443 lb-ft in S trim (measurements are in European spec). The new unit, according to Jaguar engineers, is 12% more fuel efficient, 33% more powerful, and 10% less polluting than the outgoing 2.7L motor. All this efficiency is thanks in part to a third generation piezo injected commonrail fuel system that delivers fuel more efficiently over a broader range. Also helping out significantly are the twin turbos -- a variable geometry primary turbo and a secondary fixed-geometry snail -- set to provide class-leading torque at the low end. Like other sequential twin turbo systems, the primary turbo is used for low consumption daily driving, while its accomplice lies dormant until 2800 rpm when more power is needed. For more fuel economy, a reworked ZF six-speed automatic transmission finds its way into the powertrain as well. As for performance, these latest Jags are lined up to be the brand's fastest oil burners yet. For the base XF diesel, 60 mph comes in a claimed 6.7 sec. on its way to a top speed of 149 mph. Its more powerful variant hits 60 mph in a scant 5.9 sec. and is limited to 155 mph. Both models emit a claimed 179 grams per kilometer of CO2 emissions and are good for a combined EU cycle fuel economy of 42 mpg (35 mpg).Styling of the car remains largely the same as the 2009 model, but distinguishing the Diesel S are 19-in. wheels, a trunk mounted spoiler and the necessary "S" badging. When it goes on sale in the U.K. next March, the 2010 XF Diesel will start off at 33,900 pounds ($49,230). The faster, but equally green, Diesel S carries a base price of 36,900 ($54,000). No word if the model will ever make it our way, but considering the current state of the automotive industry, don't expect any oil burning Jags here.

from motortrend.com