Overview & Reviews

The flagship Audi A8 is a full-size luxury sedan meant to appeal to wealthy consumers looking for maximum luxury and space. Although competing models from the premium German and Japanese marques may sell in greater numbers, the A8 does possess a distinct advantage because of its aluminum frame and body panels. Significantly lighter than a traditional steel structure, the Audi Space Frame (ASF), as it's called, helps offset the weight of the car's Quattro all-wheel-drive system; the A8's competitors are primarily rear-wheel drive.

Thanks to Quattro, winter weather capability is one of the Audi A8's strengths. Luxurious accommodations are another, particularly with the last couple of generations. As with other Audis, understated luxury and cutting-edge electronics combine to form an experience that delivers refinement in abundance. Though it's sometimes overlooked, the A8 is a fine choice for a luxury flagship.

Current Audi A8
The Audi A8 is a full-size luxury sedan available in standard and long-wheelbase ("L") forms. Even with standard all-wheel drive (AWD), the A8 still weighs less than most of its rear-wheel-drive rivals, let alone those fitted with optional AWD. The A8's AWD system has a rear-biased power split, which helps to provide a sportier feel akin to a rear-drive performance sedan.

There are six trim levels: 3.0T, L 3.0T, L 3.0 TDI, 4.0T, L 4.0T and L W12. The 3.0T trims have a supercharged 3.0-liter V6 with 333 horsepower and 325 pound-feet of torque. Like all A8 engines, it runs through an eight-speed automatic transmission. The 4.0T trims have a turbocharged 4.0-liter V8 that makes 420 hp and 444 lb-ft. The W12 features a 6.3-liter 12-cylinder engine that cranks out 500 hp and 463 lb-ft.  In addition to these gas-fueled powerhouses, there is the 3.0 TDI, a 3.0-liter turbodiesel V6 rated at 240 hp and 406 lb-ft. Regardless of engine choice, acceleration is swift, with the 0-60-mph sprint ranging from around 4.2 seconds to 6.3. Fuel economy is also notable, with the TDI in particular rated at an impressive 28 mpg combined.

Of course the A8 comes loaded with all the latest high-tech features. Highlights include a dynamic steering system that can intervene with automatic countersteering in a slide, adaptive cruise control with stop-and-go capability, automatic emergency braking, and night vision with thermal imaging and pedestrian detection. Audi's MMI electronics interface features an additional touchpad interface that reads fingertip gestures as letters and commands. Google Earth mapping for the navigation system is another A8 exclusive.

Beyond the sumptuous cabin, which features front and rear seats that can be adjusted in a multitude of ways, there's also the big sedan's impressive ride and handling characteristics. The ride is comfortable without excessive float over bumps. When pressed on a curvy road, the A8 proves surprisingly agile, with nicely weighted steering. Rear seat room is ample in the regular-wheelbase model, while the A8 L provides more than enough legroom for a pair of 6-footers.

The A8 undoubtedly lacks the name recognition and styling flair of its fellow Germans, but don't let that stop you from giving it strong consideration. With its roomy, best-in-class cabin and excellent driving dynamics, this luxury sedan shines as one of the strongest picks in its segment.

Used Audi A8 Models
The current A8 represents the third generation in the model's history, debuting in 2011. In that inaugural year, the sole engine was a 4.2-liter V8 engine with 372 hp and 328 lb-ft of torque. The following year brought the 6.3-liter W12. For 2013, the 4.2-liter was dropped, while both the supercharged V6 and turbocharged V8 seen in the current lineup debuted. Apart from lacking the TDI engine option and some minor differences in standard and optional equipment, these latter A8s are otherwise essentially identical to today's version.

The previous, second-generation Audi A8 was sold from 2004-'10. Relative to its predecessor, this generation offered a lighter chassis and a more muscular V8, along with lots of comfort, safety and suspension upgrades. This A8 was offered in both standard-wheelbase (A8) and long-wheelbase (A8 L) versions. The base engine was a 4.2-liter V8 that generated 335 hp and later rose to 350 hp for 2007. A six-speed automatic transmission and all-wheel drive were standard. From 2005-'09, there was an A8 L W12 model that featured a 6.0-liter 12-cylinder engine that produced 450 hp.

Changes were light during this generation. There were slight styling alterations for '08, while the equipment list was bolstered nearly every model year. Regardless of which year you may be considering here, cabin furnishings were superb and the MMI interface made accessing the car's numerous audio, climate and navigation functions fairly easy. This A8 was often overlooked by luxury sedan shoppers, but we always found it to be a great alternative and certainly equal to other flagships in terms of luxury, performance and craftsmanship.

The first-generation Audi A8 was offered from 1997-2003. Although it was one of the most technologically advanced cars on the market by virtue of its aluminum frame, it never had its successor's flair for style or performance. Understated in its adornments inside and out, the original A8 failed to deliver the over-the-top ambience that's so important for high-dollar luxury sedans sold in the United States. However, if you like the idea of owning a discreet luxury car, you can buy a used A8 for considerably less than you'd pay for a used BMW 7 Series or Mercedes-Benz S-Class.

Early Audi A8s were offered only with a 113-inch wheelbase, which meant that their backseats were cramped compared to the other full-size luxury sedans. The longer and roomier A8 L arrived for the 2000 model year and would be our pick if you're planning to carry adults in back. Most first-generation A8s were sold with a 4.2-liter V8 and Quattro all-wheel drive. Thusly equipped, the A8 was one of the quickest large luxury sedans of its day, though the V8 was deficient in off-the-line torque. It was a comfortable car but not a particularly entertaining one due to overly soft suspension tuning. Audi also offered a less expensive front-wheel-drive model from 1997-'99. This rare A8 had a small 3.7-liter V8 and a modest 8.3-second 0-60 time.

User Reviews:

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  Fun To Drive but Unreliable - 1998 Audi A8
  By EricSF - August 10 - 2:55 pm

  Ive owned two A8s. One I bought new when the L version first came out in 2000 or 2001. It was a lemon so I sued Audi and got all my money back. I loved driving the car and thought this was an exception so I bought a precertified 1998 A8. Since then I have replaced millions of things. From the transmission (died at 86K) all the engine seals, all the suspension parts, oil cooler twice, fan, heater core (expensive!) etc. I still drive the car since I like it and it is cheaper than buying a new one since I dont like the current body style. I dont have a high opinion of build quality, but it is a great car and gas mileage is pretty good. Use the tiptronic for freeway driving 20% better economy.

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  Poor Quality - 2005 Audi A8
  By Poor Quality - July 23 - 6:37 pm

  Purchased a certified pre-owned with 25k miles. Has been in the dealer 17 times within a little over a year of ownership: sunroof not closing, improperly designed thermostat (Audis words not mine), Software controller staying and draining battery ($450 to replace, not covered under warranty).

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  "Extended Warranty Required" - 2001 Audi A8
  By Al - July 21 - 2:19 pm

  The Germans have created cars with the philosophy that performance is the measure of quality. They have forgotten that durability and reliability are paramount to quality. Anyone who buys a used Audi A8 without an extended warranty will soon find the purchase economically untenable. The electrics rival those of 60s British autos. These cars are mechanically, electrically and economically a nightmare. The worst part of the experience is how arrogant they are about it.

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  Leader in quality and comfort - 2005 Audi A8
  By auditogo - June 9 - 3:02 pm

  This is best car I have had after owning several BMW models. 2005 models came with bluetooth in later production model which apparently are way more reliable than the ones with OnStar*. The only maintenance I have done over the last year is brakes and oil changes. Its hard to drive anything else once you get used to fine interior and futuristic interior. Seats are best in this class of cars. Check details online the way this car is being produced, all aluminum chassis and adjustable suspension modes provide superb ride quality. I prefer SWB over L because of aesthetics. Rear seats still provide a lot of room. MMI is easy to use and Bose stereo is the best I have come across. PPI is a must.

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  Best Sedan In its class - 2006 Audi A8
  By Tyler - June 6 - 3:50 pm

  I have been wanting an A-8 for years and finally ran across one worth buying. Depreciation is heavy in the first 3 years but this is the best sedan in its class by far. The MMI is awesome and extremely easy to figure out for a non-tech guy. I have owned Lexus, BMW, and Acura and would not go back. This is the car to own if you can afford one.

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  78,000 miles, 10 years old, Still Great - 1999 Audi A8
  By Larry Vale - June 2 - 5:15 pm

  Ive had no problems besides the front rack a few years ago. ($2k). Just scheduled maintenance involved and PM changing the transmission filter and fluid a few weeks ago. No door dings or rust with the Alum body. No squeaks or rattles either. Undervalued in the market.

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  Love my quattro A8 - 1998 Audi A8
  By gail - May 26 - 1:01 pm

  Love my A8. It now has 180,000 miles and going strong, great on highway. Have kept up with maintenance schedule and it still runs and looks like new but my kids said to sell it for a new one as I have had the same car for 10 yrs. I will be buying another Audi.

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  All around best daily driver. - 2007 Audi A8
  By Sold on Audi - April 25 - 5:32 pm

  The Audi A8 Sport is one of the most aesthetically pleasing cars I have ever seen. The real surprise however is the combination of ride, quiet and predictable handling in all conditions with high limits for a vehicle of this size and class. I expected competence, but I was surprised by the "fun to drive" aspects of this car. The longer I have owned the vehicle, the better it gets. I drove the MB, Jaguar, BMW and Lexus - there was no question before I purchased the car which one I preferred - but I am even more convinced now that I have more than 14,000 miles on the vehicle and continue to explore its capabilities. I hope Audi doesnt change much before I am ready for my next one!

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  Understated Elegance - 2008 Audi A8
  By chod - April 7 - 2:38 pm

  Ive owned an LS430, E430 MB, and driven 5 and 7 series BMWs. This is by far and away the most refined yet sporty total package that Ive ever driven. Im always looking for reasons to take this care out on the road. Its suspension and handling are amazing, combining control with the smoothest most comfortable ride while avoiding the numb feeling that I used to experience with the Lexus. The whisper quiet interior (absolutely gorgeous in cognac brown) allows me to hear my iPod/CDs/Sirius through the B&O audiophile system. What an amazing aggregation of technology, craftsmanship, thoughtful design. Driven for one year - no problems yet.

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  2007 Audi A8L 4.2L Quattro - 2007 Audi A8
  By MotorStreet - March 8 - 4:50 pm

  The A8 never fails to amaze us. On a recent vacation we drove 700 miles north and on the way the kids never asked "Are we there yet?" once. The car is so relaxing to travel in and makes any journey comfortable. The gas mileage is equally impressive, on our vacation we averaged 28 mpg and drove most of the way at 80 mph. The 350hp direct injection 4.2L V8 has immediate power and even more refinement. The MMI is easy to use and just makes sense. We looked at the Lexus LS460, but it felt big, heavy, and was worse to drive than the old LS430 the Lexus had too many features and had millions of buttons. The 2007 BMW 750i had the stupid I-drive and the S550 was too expensive. The A8 is brilliant.