Although the engine is the same size as the previous 4.4-liter V-8, the new version includes updated variable cam timing and variable-length air-intake runners for better response. The obvious ...

It used to be the number of performance SUVs could be counted on three fingers, with the X5 4.6is and Mercedes-Benz's M and G-Class AMG models making up the entire segment. Now, Porsche, Volkswagen, ...