The 2025 Audi A6 quattro 2.0L 4-cyl achieves a combined fuel economy of 26 MPG, which is in the “acceptable” range for a mid-size luxury sedan with all-wheel drive. This isn’t a hybrid, nor is it built for outright speed. It provides a comfortable and refined driving experience with reasonable running costs and the reassurance of quattro all-wheel drive. This A6 buyer isn’t prioritizing fuel efficiency above all else, but they aren’t indifferent to it either. They want a premium vehicle with a touch of sportiness, practicality, and all-weather confidence from Audi’s AWD system.

City and highway performance

The EPA estimates the A6 2.0T quattro gets 24 MPG in the city and 31 MPG on the highway. The city figure reflects stop-and-go driving, where the engine is constantly accelerating and decelerating, which strains the 2.0-liter turbocharged four. The highway number showcases the engine’s efficiency at a steady cruising speed, assisted by the seven-speed automatic transmission selecting the optimal gear for fuel conservation. These figures show the A6’s suitability as a daily driver, handling urban commutes while offering respectable fuel economy on longer trips. Drivers who spend a significant amount of time on the open road will find the highway MPG quite appealing for its vehicle class.

Annual fuel cost

Based on EPA estimates, the annual fuel cost for the 2025 Audi A6 quattro 2.0L is $2,250. This is based on driving 15,000 miles per year and using national average fuel prices, so remember this is an estimate. Your actual fuel costs will depend on your driving habits, local fuel prices, and the specific conditions you encounter. Aggressively accelerating, frequent hard braking, or consistently driving in congested traffic will increase fuel consumption and, consequently, your annual fuel expenses. Keep up to date with all Audi fuel economy data to see how fuel costs can change year to year.

Real-world expectations

EPA estimates provide a useful baseline, but real-world fuel economy often varies. Expect numbers slightly above or below the EPA figures depending on how and where you drive. Aggressive driving, frequent short trips, and heavy use of the air conditioning can negatively impact fuel economy. Driving at consistent speeds on the highway and practicing smooth acceleration can help you achieve or even surpass the EPA estimates. The A6’s onboard computer provides real-time and average fuel economy data, allowing you to monitor your driving habits and make adjustments to improve efficiency. Across its model history, you can get a sense of how the A6 has typically performed by reviewing the A6 MPG across all years.

How it compares

The A6 2.0T quattro occupies a competitive segment, and its fuel economy is a key factor for many buyers. The BMW 530i xDrive achieves a slightly better 27 MPG combined, with 24 MPG city and 33 MPG highway. The Mercedes-Benz E350 4MATIC sees a similar rating of 25 MPG combined, with 23 MPG city and 31 MPG highway. These aren’t massive differences, but they’re noticeable and might sway a buyer comparing vehicles. The Lexus ES 350 AWD manages 28 MPG combined, 25 city, and 34 highway, offering a strong alternative for those prioritizing fuel efficiency and reliability, but it is not as sporty feeling as the Audi. The choice depends on individual preferences, driving style, and priorities, but this A6 is a solid choice.

Tips to maximize efficiency

Use the Audi Drive Select system. Choose the “Efficiency” or “Comfort” mode for daily driving. These modes optimize the engine and transmission settings for maximum fuel economy, reducing throttle response and shifting to higher gears earlier.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, reducing fuel efficiency. Check your tire pressure regularly, ideally every two weeks, and inflate them to the recommended levels specified on the sticker inside the driver’s side doorjamb.

Avoid unnecessary idling. If you’re stopped for more than a minute, turn off the engine. Modern engines restart quickly and efficiently, and idling consumes fuel. The A6 2.0T is not a particularly thirsty vehicle when stationary, but the small savings add up over time.

Practice smooth driving techniques. Accelerate and brake gently, avoiding sudden bursts of speed or hard stops. Anticipate traffic flow and maintain a consistent speed whenever possible. The less you use the brakes, the less energy you waste.

Reduce weight. Remove any unnecessary items from your car, as extra weight increases fuel consumption. Even small changes, like removing rarely used items from the trunk, can make a difference over time. This is especially true for this vehicle because it has a smaller displacement engine.