The 2024 Audi A6 quattro, equipped with its 3.0L six-cylinder engine, gets a combined fuel economy rating of 25 MPG. This figure balances what luxury sedan buyers expect with the performance demands of Audi’s legendary quattro all-wheel drive system. The A6 3.0T isn’t for drivers focused on getting every last mile per gallon. It’s a car for executives who appreciate a refined driving experience and secure all-weather capability, where fuel consumption is a secondary consideration.

City and highway performance

The EPA estimates the A6 3.0T at 22 MPG in the city and 30 MPG on the highway. These numbers show the engine’s ability to deliver smooth, effortless power across a wide range of driving conditions. The city MPG reflects the engine’s responsiveness and the efficiency of its stop/start system, which helps save fuel during urban commutes. The 30 MPG highway figure shows the engine’s relaxed cruising ability, aided by the smooth-shifting seven-speed automatic transmission that keeps the engine in its optimal efficiency range at higher speeds.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2024 Audi A6 quattro 3.0L at $2,300. This figure is based on driving 15,000 miles per year, with a specific proportion of city versus highway miles, and assumes the prevailing national average fuel price. Your actual fuel cost may vary depending on your individual driving habits, the type of fuel you use, and fluctuations in fuel prices. However, the $2,300 benchmark provides a reference point for understanding the A6’s fuel consumption in relation to other vehicles, including A6 MPG across all years.

Real-world expectations

While the EPA estimates provide a baseline, real-world fuel economy often varies, especially for the A6 3.0T, where spirited driving will result in lower MPG figures. Factors like aggressive acceleration, frequent hard braking, and sustained high-speed cruising can reduce fuel efficiency.

Driving gently with an emphasis on maintaining a steady speed and anticipating traffic flow can help you achieve figures closer to, or even slightly above, the EPA estimates. The type of fuel used can make a difference, too. Premium fuel is recommended for optimal performance, but real-world testing shows it only increases mileage figures a small amount.

How it compares

In the mid-size luxury sedan class, the A6’s fuel economy is competitive, but it’s important to consider the trade-offs. For example, the BMW 540i xDrive, another all-wheel-drive competitor with a 3.0L inline-six, offers similar performance but gets a slightly lower 24 MPG combined. The Mercedes-Benz E450 4MATIC, also featuring a 3.0L inline-six, nearly matches the A6 with a combined 25 MPG rating. The Lexus ES 350, while lacking AWD in the tested model, prioritizes efficiency with a 26 MPG combined rating. Buyers considering the A6 typically prioritize the driving experience and quattro all-wheel-drive over maximizing fuel savings, yet still expect a reasonable level of efficiency. For all Audi fuel economy data see our model guides.

Tips to maximize efficiency

Use gentle acceleration and braking. The A6 3.0T’s torque output means you don’t need to push hard on the pedal to accelerate quickly. Smooth, progressive acceleration and anticipating braking situations can improve fuel economy, especially in city driving. Avoid abrupt changes in speed and maintain a steady pace whenever possible.

Take advantage of the Drive Select modes. The Audi Drive Select system offers various driving modes, including an “Efficiency” mode to optimize fuel consumption. In this mode, the engine, transmission, and other vehicle systems are calibrated for maximum efficiency, often resulting in better fuel economy in consistent conditions. Experiment with the settings to determine what gives you the best balance of performance and economy for your driving style and needs.

Ensure proper tire inflation. Maintaining the correct tire pressure, as specified on the doorjamb sticker, reduces rolling resistance and improves fuel economy. Regularly checking and adjusting tire pressure is a simple way to optimize efficiency. Underinflated tires not only decrease fuel economy but also affect handling and tire wear.

Minimize idling time. Excessive idling consumes fuel without moving the vehicle. If you anticipate a prolonged stop, such as waiting for someone or sitting in a long line, consider turning off the engine to save fuel. The A6’s automatic start/stop system helps mitigate this issue, but manually shutting off the engine during extended stops can further improve fuel efficiency.