Audi A6

used a6 white front end imageThe A6 is an executive luxury car built by Audi. The A6 is wrapped in a wonderfully styled exterior and packed with an abundance of technology and engaging driving dynamics. The current fourth generation A6 made its debut for the 2012 model year. The production of the third generation A6 ran from 2004 to 2011.

The standard engine in the fourth generation A6 is a 2.0-liter turbocharged four-cylinder engine with 220 horsepower. The base A4 is available with either front wheel drive or quattro all wheel drive. A 3.0-liter supercharged V6 engine with 310 horsepower and a diesel V6 engine with 240 horsepower are also available, but only with quattro all wheel drive.

The used Audi A6 is often compared with the Audi A7, Cadillac CTS, Mercedes-Benz E-Class and BMW 5 Series.

A6 Quattro

Audi is known for its legendary quattro all-wheel-drive system. Quattro has really set the benchmark in AWD other luxury automakers try to meet. On the A6, the Quattro all-wheel-drive system is offered on the 3.0-liter supercharged V6 and 3.0-liter diesel V6 engines. Quattro makes the A6 a highly capable car in bad weather. The system was first introduced in 1980 on the Audi Quattro. Since then, the term quattro been applied to all Audi models equipped with all-wheel drive.


The use of forced induction and diesel technology in the A6 allows the luxury car to achieve better fuel economy than most of its competitors.

The 2.0-liter turbocharged engine with 220 horsepower achieves 20 MPG in the city and 30 MPG on the highway.

The 3.0-liter diesel V6 engine with 240 horsepower is the most efficient of the group and offers a great balance of performance and fuel economy. It achieves 24 MPG in the city and 38 MPG on the highway.

The 3.0-liter supercharged V6 with 310 horsepower achieves 18 MPG in the city and 27 MPG on the highway.

Fuel economy on the S6 is decidedly less stellar as would be expected from a twin-turbocharged 4.0-liter V8 engine. Thanks to cylinder deactivation, the S6 still manages to get 17 MPG in the city and 27 MPG on the highway.

A6 VS S6

Like most German automakers, Audi offers a performance version of its A6 sedan called the S6. While the A6 is a pleasantly powered executive sedan, the S6 packs a powerful punch. The latest S6 iteration was introduced in 2012. Power comes from a twin-turbocharged 4.0-liter V8 engine producing 414 to 420 horsepower horsepower and approximately 406 lb-ft of torque. The only available transmission on the S6 is the 7-speed S Tronic duel-clutch automatic transmission.

While the A6 provides a softer, more refined driving experience, the S6 is all about performance and has a number of performance modifications not available on the A6 besides a V8 engine. For example, the S6 has adaptive air suspension, ventilated brake disc, optional carbon fiber-ceramic discs, quattro permanent all-wheel-drive system with a self-locking center differential and torque vectoring along with numerous visual changes to differentiate itself from the A6.

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Written by Anthony Alaniz