Used 2017 Audi S6 Sedan Trims Comparison

Standard exterior features for the Premium Plus trim include 19-inch wheels with summer tires, S-specific styling elements, automatic xenon headlights, LED running lights and taillights, a sport-tuned adaptive air suspension, a sunroof, heated auto-dimming power-folding side mirrors, front and rear parking sensors, a blind-spot warning system and keyless ignition and entry.

Inside you'll find a driver information center with a 7-inch display between the gauges, Audi's Drive Select (which offers adjustable settings for steering, suspension and transmission response), diamond-stitched leather upholstery, heated eight-way power front sport seats (with four-way driver power lumbar), a power-adjustable flat-bottomed steering wheel, driver memory settings, four-zone automatic climate control, an auto-dimming rearview mirror and 60/40 split- folding rear seatbacks.

Electronics highlights start with the MMI infotainment system, which includes a console-mounted control knob with a touchpad that can read your fingertip scribbles, a central 8-inch display, a navigation system with Google Earth maps, voice controls (including Siri Eyes Free for iOS devices) and Audi Connect (including enhanced Web-based information services, 4G LTE data connectivity and mobile Wi-Fi capability). Also standard are a rearview camera, Bluetooth phone and audio, a 14-speaker Bose surround sound audio system.

The Prestige trim adds LED headlights, a power trunk lid, a head-up display, LED interior lighting and rear sunshades (manual for the side windows, powered for the rear window). The LED headlights and rear sunshades can also be added as options to the Premium Plus.

Exclusive options for the Prestige trim include a night-vision system and a 15-speaker Bang & Olufsen sound system.

Most other options, available for either trim, are organized into packages. The Driver Assistance package adds adaptive cruise control (with stop-and-go functionality), lane keeping assist, a surround-view parking camera system, a forward collision mitigation system with automatic braking, and automatic high beams.

The Comfort Seating package features upgraded front seats with ventilation and massage functions, front passenger memory settings, and upgraded leather upholstery (sans diamond stitching).

The S6 Sport package provides dynamic steering, a torque-vectoring rear differential and a sport exhaust. The Cold Weather package adds heated rear seats and a heated steering wheel. The Black Optic package tacks on exclusive 20-inch wheels, body-color exterior mirrors (instead of the standard silver ones) and gloss-black exterior trim.

Stand-alone options include different 20-inch wheels, rear side airbags, and a selection of inlays and interior trim choices.

The 2017 S6 is powered by a turbocharged 4.0-liter V8 that pumps out 450 horsepower and 406 pound-feet of torque. The transmission is a seven-speed automatic with paddle shifters that works in concert with the standard all-wheel-drive system.

In Edmunds track testing, the S6 scorched the pavement, accelerating from zero to 60 mph in just 4.1 seconds, a very quick time for any class of car.

Remarkably, the S6 also earns an above-average EPA fuel economy rating of 21 mpg combined (18 mpg city/27 mpg highway).