The 2025 Audi A6 Allroad quattro’s 25 MPG combined fuel economy won’t break any records. But for its loyal customer base—affluent suburbanites who value all-weather capability, a refined driving experience, and understated exclusivity—it’s an accepted compromise. The Allroad focuses on blending luxury with wagon practicality and the confidence of Audi’s quattro all-wheel drive, not achieving Prius-like gas mileage.

City and highway performance

The EPA estimates the A6 Allroad gets 22 MPG in the city and 30 MPG on the highway. The city figure reflects stop-and-go traffic, where the 3.0L turbocharged six-cylinder engine consumes more fuel, even though it’s smooth and responsive. The highway number suggests trade-offs for a vehicle designed for both spirited driving and all-road use. The automatic AM-S7 transmission optimizes the engine’s performance, whether maximizing fuel economy on a long trip or finding the right gear for passing. These figures should encourage drivers who primarily do highway driving to consider the Allroad.

Annual fuel cost

The EPA estimates the 2025 Audi A6 Allroad quattro’s annual fuel cost at $2,300. This is based on driving 15,000 miles per year using the EPA’s projected national average fuel prices. Actual fuel costs can vary based on your driving, local fuel prices, and the fuel type. $2,300 is a significant expense relative to more fuel-efficient wagons, but it is manageable for the Allroad’s target buyer who values its unique attributes.

Real-world expectations

EPA estimates are a benchmark, but real-world fuel economy depends on driving and conditions. Expect figures close to the EPA numbers in ideal conditions – moderate temperatures, flat terrain, and consistent speeds. Aggressive driving, frequent short trips, and extreme weather will lower fuel economy. Towing, even light loads, will also significantly impact gas mileage. The A6 can also be practical, providing light towing for those wanting more for their dollar. Consistent maintenance, especially proper tire inflation and regular oil changes, are important for optimal fuel economy. Keep this in mind to keep your Allroad driving as expected.

How it compares

The Audi A6 Allroad has few direct competitors. The Volvo V60 Cross Country, EPA-estimated at 25 MPG combined, offers similar wagon practicality and all-weather capability, but with a different brand image and driving experience. The Subaru Outback Wilderness, less expensive, achieves around 23 MPG combined but lacks the Allroad’s refined interior and performance. The Mercedes-Benz E-Class Wagon, in its non-AMG version, is a closer competitor, achieving around 24 MPG combined, but it favors traditional luxury over ruggedness. Ultimately, the Allroad buyer isn’t only considering fuel economy; they want Audi’s blend of performance, luxury, all-weather capability, and wagon practicality. Reviewing A6 MPG across all years helps buyers understand trends for this model.

Tips to maximize efficiency

Use the Audi Drive Select system. Try different modes – especially “Efficiency” – to see how they affect your driving and fuel consumption. This mode usually softens throttle response and optimizes transmission settings for maximum economy. Understanding the various drive settings is a great start.

Check your tire pressure often. Underinflated tires increase rolling resistance, which hurts fuel economy. The A6 Allroad’s tire pressure monitoring system provides data, but manually checking, especially before long trips, is still a good idea. The TPMS is a good system to have, but don’t rely on it completely.

Reduce unneeded weight. Carrying extra cargo in the trunk or on the roof rack increases drag and lowers fuel economy. Remove items you don’t need daily. Reducing overall weight helps you save gas.

Use cruise control on the highway when you can. Maintaining a consistent speed avoids extra acceleration and deceleration, which wastes fuel. The Allroad’s adaptive cruise control system can improve efficiency by maintaining a safe following distance, reducing braking and acceleration. Pay attention when using the system to reduce accident chances.

Avoid fast acceleration and braking. The Allroad’s turbocharged engine rewards smooth inputs. Sudden acceleration and hard braking significantly reduce fuel economy. The engine’s responsiveness can be tempting, but using the power carefully saves fuel. For more on other Audi models, check all Audi fuel economy data to learn more.