Porsche has unveiled the newest member of its Cayenne SUV family, the Cayenne Diesel. Using a 240-horsepower, 3.0-liter V-6, the Cayenne Diesel’s big number is torque. With 406 pound-feet available at a low 1750 rpm, it’ll scoot to 60 miles per hour in 7.2 seconds before topping out at 135 miles per hour.
