The 2021 Audi A6 quattro 2.0L, with its EPA-estimated 26 MPG combined, isn’t trying to redefine fuel efficiency. It knows precisely what it needs to be: a comfortable luxury sedan with the added security of all-wheel drive. Buyers in this segment aren’t solely focused on maximizing every last mile per gallon; they prioritize a blend of performance, technology, and prestige, and are willing to accept a reasonable compromise on fuel economy to get it.

City and highway performance

The EPA splits the A6’s fuel economy into 23 MPG in the city and 31 MPG on the highway. The urban figure reflects the stop-and-go nature of city driving, where the 2.0L engine and seven-speed automatic transmission work to deliver power but are less efficient. The 31 MPG highway rating is more impressive, showcasing the engine’s ability to cruise efficiently at higher speeds. This is a key benefit for those who regularly commute or take longer trips, where the A6 can stretch its fuel tank and provide comfortable, quiet travel.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Audi A6 quattro 2.0L at $2,250. This figure is calculated based on driving 15,000 miles per year and using the national average fuel price at the time of the EPA’s testing. Your actual fuel costs may vary depending on your driving habits, the type of fuel you use, and local fuel prices. It’s a useful benchmark for comparing the A6’s running costs against other vehicles in its class, but should be considered just one piece of the overall ownership cost picture.

Real-world expectations

While the EPA estimates provide a standardized baseline, real-world fuel economy can differ. Factors like driving style, traffic conditions, and even the use of accessories like air conditioning can impact fuel consumption. Drivers with a heavier foot will likely see figures closer to the city MPG, while those who prioritize smooth acceleration and consistent speeds may achieve numbers closer to, or even slightly above, the highway rating. Regular maintenance, including properly inflated tires and timely oil changes, also plays a role in maintaining optimal fuel efficiency. Checking A6 MPG across all years is a solid way to spot trends that relate to your own circumstances.

How It Compares

The A6’s fuel economy is competitive within its class, though some rivals offer slightly better figures. For example, the BMW 530i xDrive, another popular choice in the segment, achieves a similar 25 MPG combined. The Mercedes-Benz E350 4MATIC typically lands in the same ballpark. However, some competitors employing hybrid technology can outperform the A6 in fuel efficiency. The Lexus ES 300h, for instance, boasts a significantly higher combined MPG, but it caters to a buyer prioritizing fuel economy above all else. Ultimately, the A6 buyer isn’t solely driven by MPG figures, but by the total package: a balance of luxury, performance, and all-weather capability, with fuel economy being a consideration but not the deciding factor. Browsing all Audi fuel economy data can help contextualize this model in the overall portfolio.

Tips to maximize efficiency

One of the easiest ways to improve your A6’s fuel economy is to adopt a smoother driving style. Avoid rapid acceleration and hard braking, as these actions consume more fuel. Anticipate traffic flow and maintain a steady speed whenever possible. The A6’s seven-speed automatic is designed to optimize fuel economy, so let it do its job by avoiding unnecessary gear changes.

Ensure your tires are properly inflated. Underinflated tires create more rolling resistance, which reduces fuel efficiency. Check your tire pressure regularly and inflate them to the recommended pressure listed on the sticker inside the driver’s side door. Even a small increase in tire pressure can make a noticeable difference over time.

Minimize the use of accessories that draw power from the engine. Air conditioning, in particular, can significantly impact fuel economy. Use it sparingly and consider opening the windows or using the ventilation system when the weather permits. Also, be mindful of other power-draining accessories like heated seats and headlights.

Keep your A6 properly maintained. Regular oil changes, air filter replacements, and other routine maintenance tasks help ensure that your engine is running efficiently. A well-maintained engine consumes less fuel and performs better overall. Follow the manufacturer’s recommended maintenance schedule to keep your A6 in top condition and make it last longer.

Consider using the A6’s drive mode select system to optimize fuel economy. The “Efficiency” mode, if equipped, can adjust engine and transmission settings to prioritize fuel efficiency. This mode may reduce throttle response and shift points, but it can help you save fuel, especially on longer highway trips.