How I Annihilated The Audi TDI Challenge But Still Got Great MPG

Audi has a bone to pick with you, Mr. Luxury Hybrid Car Shopper. They know you want fuel economy, but they think you're looking in the wrong place. They want you to consider their revised 3.0-liter V6 turbo diesel instead, and they invited a bunch of journalists to drive it and prove how efficient it could really be. »8/23/13 3:05pm8/23/13 3:05pm