The Audi A6 is comfortable, quiet, and agile, and one of the better midsized luxury sedans.
Most versions come with a standard 2.0-liter turbo four-cylinder engine; a 3.0-liter V6 turbo engine is optional.
The seven-speed dual-clutch automatic transmission can be short on refinement at low speeds, and the car hesitates a bit before launch or from a rolling stop.
Ultimately, the four-cylinder proved to be powerful and returned a commendable 26 mpg overall in our tests.
Agile handling makes the A6 feel sporty.
The ride is taut, with underlying firmness, but still comfortable.
The quiet cabin is a delight in terms of fit and finish; the seats are extremely comfortable and supportive.
The dual-screen infotainment system is daunting at first, but we found it to be ultimately logical.
FCW and AEB with pedestrian detection are standard.
The RS 6 Avant wagon with a 4.0-liter turbo V8 is new.