If you're going to use the backseat, we'd lean toward the Audi, which has significantly more real-world rear legroom than its 1.3-inch advantage would indicate. In addition, the A6's narrower front seats benefit rear passengers, who have a better view out the front of the car.

Silicon Valley in Your Sedan
Technology is no longer an afterthought in sport-luxury sedans like these. Now you practically need basic computer skills just to drive them.

BMW's iDrive has come a long way on the user-friendliness spectrum, but it still reminds us of Internet Explorer: In other words, it's still a bit clunky. In the A6, corner buttons around the main Multi Media Interface (MMI) controller act as breadcrumbs, so it's easier to regroup if you've gone down the wrong path.

In addition, the BMW 5 Series doesn't have a Wi-Fi router, which is the neatest bit of tech in the 2012 Audi A6. Using a 3G connection (with a rated speed of 7 megabits per second), this mobile Internet connection adds Google Earth data to the navigation system's DVD-based street maps while providing simplified Google search for POIs. It sounds a bit over the top, but it's actually quite handy if you need to get some unexpected work done on the road and there's no Starbucks in sight.

Both cabins have rich wood inlays surrounding their tech, but the furnishings in the A6 are warmer than the down-to-business ensemble in the 535i. However, we noticed a couple ill-fitting panels in our Audi tester, while the BMW is flawless.Are There Any Sport Sedans Left?
It's a stretch to call the Audi A6 and BMW 535i sport sedans. These are big, heavy, complicated luxury sedans, and comparing them to a seminal car like the E39 5 Series, which had a CD-based nav system and weighed 500 pounds less, seems

Are There Any Sport Sedans Left?
It's a stretch to call the Audi A6 and BMW 535i sport sedans. These are big, heavy, complicated luxury sedans, and comparing them to a seminal car like the E39 5 Series, which had a CD-based nav system and weighed 500 pounds less, seems almost silly.
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