The 2015 Audi A6 quattro 2.0L’s 23 MPG combined won’t break any fuel efficiency records, but dismissing it would be a mistake. It’s not a Prius; it’s a luxury sedan with standard all-wheel drive for buyers who want comfort, performance, and year-round capability. The fuel economy isn’t the best in its class, but it’s a trade-off for the A6’s driving experience and stability in bad weather.

City and highway performance

EPA estimates are 20 MPG in the city and 29 MPG on the highway for the 2015 Audi A6 quattro 2.0L. Most owners will see the biggest swings in the city, where stop-and-go traffic and aggressive acceleration will reduce that number quickly. The highway number is more consistent, showing how well the 2.0L turbocharged four-cylinder engine does when cruising at steady speeds. The eight-speed automatic transmission helps optimize fuel economy on the open road by keeping the engine speed low. The quattro all-wheel-drive system delivers excellent grip, but adds weight and drivetrain losses compared to front-wheel-drive versions, affecting overall efficiency.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 Audi A6 quattro 2.0L at $2,500. This uses 15,000 miles per year and the EPA’s projected national average fuel prices. Individual fuel costs depend on driving habits, local fuel prices, and the type of fuel. Premium fuel is recommended for best performance, which also increases the per-gallon cost. Each buyer should consider their own driving and fuel costs to see how this estimate fits their situation.

Real-world expectations

EPA estimates are useful, but many drivers see slightly lower fuel economy in the real world. Aggressive acceleration, frequent short trips, and cold weather can all hurt fuel efficiency. Drivers who accelerate smoothly, anticipate traffic, and keep consistent speeds can often get numbers close to or even better than the EPA estimates. The A6’s trip computer shows real-time and average fuel economy, so drivers can track their efficiency and adjust their driving. Also, tire pressure matters. Keep tires inflated to the recommended pressure to reduce rolling resistance and improve fuel economy.

How it compares

The 2015 Audi A6 quattro 2.0L’s fuel economy is competitive but not amazing compared to other mid-size luxury sedans with all-wheel drive. The BMW 528i xDrive from the same year, also with a 2.0L turbocharged four-cylinder, gets slightly better fuel mileage at 27 MPG combined. A Mercedes-Benz E350 4MATIC, with a 3.5L V6, gets around 24 MPG combined. The Acura TLX SH-AWD, with its 3.5L V6, is rated at 25 MPG combined. However, the A6’s target customer doesn’t only care about less gas. They also value the Audi’s design, comfortable interior, advanced technology, and the quattro all-wheel-drive system’s grip. For drivers who care more about fuel consumption, Audi offered a front-wheel-drive version of the A6 2.0T, which was a bit more efficient.

Tips to maximize efficiency

Avoid aggressive acceleration and hard braking. The A6’s turbocharged engine is more efficient with smooth, gradual inputs. Anticipate traffic and maintain a steady speed when you can. Sharply accelerating and then coasting reduces fuel economy in this vehicle.

Keep the tires properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressures often and inflate them to the levels on the door jamb sticker.

Remove any items from the trunk or cabin that are not needed. Extra weight increases fuel consumption, especially in city driving with frequent stops.

Consider using the “efficiency” driving mode, if the vehicle has it. This mode changes the engine and transmission to prioritize fuel economy over performance. Responsiveness may decrease, but it can make a difference on longer drives.

Make sure your A6 is properly maintained. Regular oil changes, air filter replacements, and tune-ups can help the engine run efficiently. A poorly maintained engine uses more fuel.

The 2015 Audi A6 quattro 2.0L balances luxury, performance, and all-weather capability. It’s not the most fuel-efficient in its class, but its driving and ownership experience justifies its fuel consumption for many buyers. Drivers who want to explore all Audi fuel economy data or review A6 MPG across all years can find more information on this site. Driving style and maintenance are critical to approximating the EPA estimates.