2021 Audi A8

Overview

Audi's largest and most luxurious sedan—the 2021 A8—hides its high-dollar cabin behind a handsome-yet-understated façade. It even earns a spot on our Editors' Choice list. From a distance, it's easy to mistake this nearly six-figure sedan for a humble A4, but that sort of anonymity may actually be appealing to more restrained millionaires. Inside, buyers will find a cabin that is just as spacious and elegantly outfitted as the showier Mercedes-Benz S-class and BMW 7-series, including available massaging seats for front and rear passengers. Audi has rolled out its entire cavalcade of infotainment and driver-assistance technology here, as the A8 serves as a rolling showcase of whiz-bang features.

What's New for 2021?

Audi is ratcheting up the luxury on the A8 for 2021 by making 22-way, power-adjustable front seats with heat and ventilation standard across the lineup. Also now standard is a wireless smartphone charging pad and a 360-degree exterior camera system. The top-flight 60 TFSI model now comes with the Sport Style package (20-inch wheels, front-lip spoiler, and chrome lower body cladding) as well as Matrix-design LED headlights and soft Valcona leather upholstery.

Pricing and Which One to Buy

Engine, Transmission, and Performance

The base 55 TFSI comes with a turbocharged V-6 rated at 335 horsepower, and the 60 TFSI has a 453-hp twin-turbo V-8 engine. Both versions use a 48-volt hybrid system. An eight-speed automatic transmission and all-wheel drive are standard. The plug-in hybrid 60 TFSI e combines the V-6 with an electric motor and a rear-mounted 14.1-kWh battery pack. The 2021 Audi A8 TFSI e is rated at 443 hp. So far, we've only tested the V-6 55 TFSI version, which sprinted from zero to 60 mph in 5.3 seconds at our test track. Among six-cylinder executive sedans, that's on par with the Mercedes-Benz S450 but a few tenths off the rapid pace of the BMW 740i. The Audi's engine is smooth, but there's no fanfare to its power delivery, and sound-deadening measures are so extensive that it's practically inaudible with the windows up. The A8 offers a very Audi-like blend of athleticism and ride comfort. An adjustable air suspension and driver-adjustable adaptive dampers are standard. Optional with the V-8 is a more advanced active suspension that scans the road ahead for bumps and takes measures to compensate. With the base suspension, the Audi A8 isolates you from road irregularities but can still hammer down a back road when the mood strikes.

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Fuel Economy and Real-World MPG

The EPA estimates the 2021 A8 sedan with the standard six-cylinder powertrain will earn 17 mpg city and 26 mpg highway. The V-8 version has ratings of 15 mpg city and 23 highway. The plug-in-hybrid has a combined estimate of 23 mpg and an electric-only range of 18 miles. However, we can't evaluate the real-world mpg for any of these A8 models until we run them on our 75-mph highway fuel-economy route, which is part of our extensive testing regimen.

Interior, Comfort, and Cargo

Impressive passenger space is an A8 hallmark, and its long wheelbase ensures that rear-seat passengers are well accommodated. Five-passenger seating is standard, but an optional four-passenger seating package deletes the rear center seat and provides a pair of power-adjustable rear seats with heating, ventilation, and massage as well as a heated foot-massage function and a pair of individual entertainment tablets (while reducing power adjustments for the front passenger seat to make room for all that). Fine materials are in abundance, and you can order up extended leather and a small forest's worth of wood inlays. But much like the A8's exterior, the interior ambience is sober and not as lavish as that of the Mercedes S-class. Trunk capacity is modest for a big luxury sedan at just 13 cubic feet.

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Infotainment and Connectivity

Audi's excellent 12.3-inch Virtual Cockpit instrument cluster is standard as are the 10.3-inch upper and 8.6-inch lower haptic center screens with the MMI Touch Response system. There's a lone volume knob for the audio system, since most functions are controlled through the touchscreens. It can be overwhelming initially, but the system is quick to respond and highly configurable, allowing owners to choose their own dedicated buttons on the lower screen while offering permanent buttons for navigation, weather, telephone functions, and radio on the left side of the upper screen. Just know that you'll wear out the included microfiber wipe trying to remove fingerprints. Up front, there are two USB ports with combined data and charging capability, and Android Auto and Apple CarPlay phone integration is standard along with Amazon Alexa compatibility. Wi-Fi via Audi Connect Plus is available for an additional subscription fee.

Safety and Driver-Assistance Features

The A8 offers much the same driver-assistance technologies as other high-end sedans. When equipped with Traffic Jam Assist (Driver Assistance package), the A8 will help you out with acceleration and braking in heavy traffic, but your hands can't leave the wheel for more than a few seconds. For more information about the A8's crash-test results, visit the National Highway Traffic Safety Administration (NHTSA) and Insurance Institute for Highway Safety (IIHS) websites. Key safety features include:

• Standard automated emergency braking with pedestrian detection
• Standard lane-departure warning and lane-keeping assist
• Available adaptive cruise control

Warranty and Maintenance Coverage

Warranty coverage on the 2021 A8 is nothing special in the realm of luxury cars. Buyers looking for more value in this category should check out the Genesis G90, which comes standard with up to 10 years or 100,000 miles of warranty and three years of free maintenance.

• Limited warranty covers four years or 50,000 miles
• Powertrain warranty covers four years or 50,000 miles
• No complimentary scheduled maintenance

More Features and Specs