Audi’s A8L is the pinnacle of German über-luxury sedans, with an understated yet impressive design. It’s beautiful inside, too, but the A8 can be athletic when the road gets twisty. A 333-hp 3.0-liter supercharged V-6 is standard; a 450-hp 4.0-liter twin-turbo V-8 is optional. For the ultimate in prestige, there is the 500-hp 6.3-liter W12. All-wheel drive and an eight-speed automatic are standard on all. 2015 and 2016 TDI diesels have been stop-saled until further notice due to EPA violations.