The exceptionally handsome Audi A5 coupes and convertibles have quiet and luxurious cabins with accommodations for four. Although the rear seat is snug, it's one of the best in any convertible. The Audi two-door drives well, demonstrating agile handling and a taut, but compliant suspension system. The A5 initially used a 3.2-liter V6 engine in the base model, while the S5 performance version featured a 4.2-liter V8. A turbocharged four-cylinder arrived in 2010, delivering ample power but sounding raspy. The V6 was dropped in 2013. The eight-speed automatic is super-smooth. The convertible has a shudder-free body structure and is almost devoid of wind buffeting. What's more, the well-insulated soft top can be operated while driving at low speeds. The revised S5 uses a supercharged V6 with a seven-speed automated manual transmission.