The overhauled Audi A6 Avant kicks off a new generation for the automaker's mid-size offering and should be joined by a sedan later this year. A turbocharged 3.0-liter V-6 produces 362 horsepower ...

the hard reality for AMG is that its buyers associate it with V8 and even V12 engines. That emotional pull is hard to replace with logic, even if the new model offers technical superiority. I was ...