The Audi A8 will be ditching its tried-and-true naturally aspirated 4.2-liter V8 engine for the 2013 model year. Instead, the automaker is fitting its flagship sedan with the twin-turbocharged 4.0-liter V8 that's also being used in the S6 and S7, good for 420 horsepower and 406 pound-feet of torque – increases of 48 hp and 78 lb-ft versus the 4.2-liter model.
Audi has confirmed at the Detroit Auto Show that its 2013 A8 will be available with a 3.0-liter supercharged V6 in the United States. Delivering 333 horsepower and 325 pound-feet of torque through all four wheels, the A8 3.0T will be sold in both both short- and long-wheelbase formats and it will be one of a growing crop of vehicles sold in North America with start/stop technology. The move follows confirmation that Audi will also market its flagship luxury sedan with a 3.0-liter six-cylinder T