Used 2017 Audi A6 Sedan Trims Comparison

Of note, Audi has discontinued sales of its TDI diesel engine-equipped models pending review of its emissions certification.

Standard equipment for the 2.0T Premium includes 18-inch wheels, Audi Drive Select (providing adjustable modes for steering, gas pedal and transmission response), automatic xenon headlights, LED running lights and taillights, automatic wipers, auto-dimming mirrors, a sunroof, front and rear parking sensors, a rearview camera, tri-zone automatic climate control, heated eight-way power front seats (includes driver four-way lumbar adjustments), driver memory settings, leather upholstery, Bluetooth phone connectivity, Audi's MMI electronics interface, a 6.5-inch display screen and a 10-speaker sound system with a CD player, satellite radio and Audi's proprietary music interface with an iPhone Lightning adapter cable. Also standard is Audi's PreSense Basic safety system.

The 2.0T Premium Plus adds a blind-spot monitoring system, Pre Sense Rear, power-folding exterior mirrors, keyless ignition and entry, four-zone climate control, a power-adjustable steering wheel, an 8-inch display screen, a voice-activated navigation system, Bluetooth audio connectivity, a Bose surround sound audio system, an upgraded version of MMI with an enhanced controller, USB connectivity, Apple CarPlay and Android Auto, and Audi Connect (featuring Google Earth integration, Google-powered search functions, smartphone app integration and AT&T-based 4G LTE Wi-Fi hotspot capability).

The 3.0T Premium Plus is equipped similarly to the 2.0T Premium Plus but adds a six-cylinder engine, chrome exterior accents (window frames, exhaust outlet) and a fuel-saving engine stop-start system.

Going with the 3.0T Prestige gets you adaptive LED headlights, ambient LED cabin lighting, power trunk opening and closing, a head-up display, ventilated front seats with front passenger seat power lumbar support, a power rear sunshade and manual rear side window sunshades.

New for 2017 is the 3.0T Competition Prestige trim, which features 20-inch titanium-finish wheels, a sport suspension, a high-performance rear differential, sport seats, upgraded leather upholstery, a flat-bottom steering wheel, black cloth headliner, and various styling flourishes like high-gloss black trim pieces, red brake calipers, and brushed metal inlays.

Optional packages, depending on trim, include the the Cold Weather package (heated rear seats and a heated steering wheel), the Sport package (19-inch wheels and a sport-tuned suspension), the Driver Assistance package (adaptive cruise control, automatic high-beam headlight control, a top-view camera system with front and rear corner views, lane keeping assist and Pre Sense Plus collision mitigation with automatic braking), the Comfort Seating package (individually contoured and ventilated front seats with passenger memory settings and massage function) and the Black Optic package (available with 19-inch, titanium-finished wheels, or 20-inch black-polished wheels with summer tires).

Other notable options include rear side airbags and three items limited to the 3.0T Prestige: a night-vision camera system with pedestrian detection, ventilated multicontour front seats with driver and passenger memory settings, massage function, and upgraded leather upholstery, and a 15-speaker Bang & Olufsen audio system.

The 2017 Audi A6 2.0T is powered by a turbocharged 2.0-liter four-cylinder engine rated at 252 horsepower and 273 pound-feet of torque. Front-wheel drive and a seven-speed automated manual transmission are standard, but you're more likely to find most A6s fitted with "Quattro" all-wheel drive which comes with an eight-speed conventional automatic. The EPA says you can expect 28 mpg combined (24 mpg city/35 mpg highway) with front-wheel drive and 26 mpg combined (22 mpg city/32 mpg highway) with all-wheel drive.

The Audi A6 3.0T gets a supercharged 3.0-liter V6 engine that produces 333 hp (340 hp in the Competition model) and 325 lb-ft of torque. The eight-speed automatic and all-wheel drive are standard, as is automatic engine stop-start technology. EPA fuel economy estimates come in at 24 mpg combined (20 mpg city/30 mpg highway). In Edmunds.com testing, a 2016 A6 3.0T sprinted from zero to 60 mph in just 5.3 seconds, a quick time for a car in this class.

Of note, Audi has discontinued sales of its TDI diesel engine-equipped models until it can sort out certain emissions issues.