Porsche decided to bring back to life the 911 Turbo S and Turbo S Cabriolet models in 2010, consequence of customer demand for more power and improved on-road capabilities of the 911 Turbo. Despite the fact that engine power has been boosted by 30 HP, to a total of 530 HP, the 3.8l boxer unit delivers best-in-class fuel economy (approximately 24.5 mpg or 11.4 l/ 100 km).

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he A6 3.0 TDI’s turbo-diesel has been redesigned from the ground up. Weight drops by 11.5 percent (55 pounds) compared with the engine it replaces . Some 13 pounds were trimmed from the crankcase alone, which now is made from a high-strength cast iron. Sundry rotating parts have been lightened as well.  read more »