2008 Audi A8 L W12 compare

The big 2008 Audi A8 L W12 combines high luxury and surprisingly sporty performance. Its tech credentials are anchored by a stellar Bang & Olufsen audio system, and include some innovative driving tech. While quite nice to drive, a chauffeur makes a fine accessory.

The 2009 Audi S8 is a very powerful big sedan with some excellent handling features, but it doesn't offer all of the latest in-dash gizmos, and you trade a luxury ride for performance.

The 2014 Acura RLX makes a game attempt at being a high-tech roller, but suffers from flaws serious enough that they should send Acura back to the drawing board.

The 2013 Audi S7 features a phenomenal amount of tech both in the cabin and under the hood. An impressive sport driver, its fuel economy remains decent enough for a daily commute.