Future360 visits the LA Auto Show to see what's next in clean diesel technology. The Audi A8 is a clean diesel vehicle that outperforms many diesel and hybrid cars in its class. Clean diesel means you get all the efficiency and performance you expect with none of the downside when it comes to emissions. The car produces 30% less carbon dioxide than their gas counterparts and boasts 240 horsepower and a V6 engine. Pricing will be slightly more than a comparable gasoline V6, and well below a V8.