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The new 3.0-litre diesel is the pick of the Jaguar XF range. How can it not be? It's relatively low on emissions, it'll return 42mpg and the 271bhp version sprints from 0 to 62mph in just 6.4 seconds and then all the way up to a limited 155mph.
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So why bother with a thirsty V8? The new £49,900 5.0-litre is also limited to 155mph, only beats the diesel to the 62mph benchmark by only 0.6s but can't come close to matching the 3.0-litre's fuel consumption managing a distinctly unimpressive 25.2mpg.
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Factor in an additional £5,700 premium and the 380bhp 5.0 looks like an unnecessary luxury - until you consider the price of the XFR. At £10k less than the high performance XF, the 5.0-litre offers a lot of bang for your bucks.
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Source:http://www.channel4.com