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If you're wishing and hoping for more diesel in the U.S., it looks like your best bet may again be placed on the Germans. Wards Automotive quotes Mercedes-Benz USA President Ernst Lieb as saying that the 2.2-liter Bluetec diesel will rest under the hood of the 2012 GLK. The oil-burning mill will likely cost a few thousand dollars more than the petrol-powered GLK, but fuel economy from the diesel four-pot will of course be vastly superior.

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