2014 Audi A6 TDI Premium Plus quattro 4dr Sedan AWD (3.0L 6cyl Turbodiesel 8A)
Have had my A6 TDI Prestige with 19" Sport Package for 2 months and 2,400+ miles now, and it has met or exceeded all expectations. Having come from a 2010 3.0T A6, the TDI feels just as powerful as the 3.0T (albeit rated about 60HP less), but then again it's all about the torque with this car (428 lb ft). The MPG (easily averaging 30mpg+ in mixed driving, and close to 40 on long highway runs) and the range (averaging close to 600 miles/tank) are incredible for a car of this size and power. Love all the tech in this compared to my prior A6, and the car just looks great in Daytona Gray w/ all black interior, 19" sport pkg and full LED headlights to top it all off.
MPG/range and torque of the TDI. Audiconnect with Google Earth map overlay on the NAV, ability to use voice commands to Google-search for destinations, and the in-car wi-fi (kids love it for their "devices"). Upgraded seats in the Prestige trim provide nice support and comfort (with ventilation) compared to seats in Prem+ models. 19" Sport Package comes with A/S tires (vs summer tires in prior model yrs). LED headlights - while a pricey option @ $1,400 - provide great illumination and really give the car a distinctive look.
Nothing I can think of....Audi hit it out of the park with this car!