It's a sign of the times that Jaguar launched its first derv model back in 2003 and here we are вЂ“ just six years later вЂ“ with a full, Boxster-baiting performance oil-burner. Jag's not let any journos loose in the lower-powered XF diesel yet, so we're only able to report on the range-topping Diesel S. The old 204bhp 2.7 TD has swollen to 3.0 litres in capacity and now comes in two power outputs: 237bhp and 271bhp. The higher-powered XF Diesel S is firmly targeted at the BMW 535d. The new Jaguar XF Diesel S: should the BMW 535d be worried?

It's an unusually swift engine overhaul for the XF, a car that's only been on sale for 12 months. These are important new engines вЂ“ bound for action in the new 2010 Jaguar XJ, XK sports car, XF, Land Rover Discovery and numerous Range Rovers. It's a failing confirmed by life with our long-term test XF 2.7 D.Д¬ue the new family of expanded 3.0-litre twin-turbo diesels arriving in the XF in March 2009 (alongside the new naturally aspirated 5.0 V8 and supercharged XFR). Our biggest criticism? The XF's weedy 2.7-litre V6 diesel engine, which was nonchalantly dispatched by the BMW 5-series' cleaner, brawnier, more efficient diesel engines. Is Jaguar at a stroke about to answer our biggest criticisms of the XF executive saloon? Now the dust has settled after the epoch-bending new four-door replaced the stuffy S-type in 2008, we've grown used to seeing the wedgy new Jag on our roads and had time to assimilate the XF's place in execville.Д¬AR Magazine didn't swallow the PR spin and placed the XF behind its BMW 5-series nemesis when we group-tested the XF against its rivals, including the Mercedes CLS and Lexus GS.

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