Diesels aren't nearly as popular in North America as they are in other markets. Part of that comes down to fuel pricing (diesel not being as economically priced in the US as it is overseas), and part of its comes down to the availability of enticing diesel models on this side of the Atlantic. Those two factors may be mutually reinforcing, but Audi
continues to champion the cause. Now the German automaker has announced that it is launching four new diesel models for the US market at the upcoming LA Auto Show.