The 2015 Audi A6 quattro 3.0L, managing 21 MPG combined, doesn’t prioritize fuel sipping above all else. It’s not a Prius competitor; it’s a luxury sport sedan designed for confident all-weather performance and brisk acceleration. This number reflects a trade-off consciously accepted by drivers who value a refined driving experience and the surefootedness of Audi’s renowned quattro all-wheel-drive system.

City and highway performance

The EPA estimates the 2015 A6 quattro at 18 MPG in the city and 27 MPG on the highway. These figures realistically reflect the car’s behavior in different driving conditions. The city MPG acknowledges the fuel demands of stop-and-go traffic, where the 3.0-liter supercharged V6 works harder to overcome inertia. The highway MPG demonstrates the engine’s efficiency at sustained speeds, benefiting from the automatic transmission’s ability to settle into higher gears.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 Audi A6 quattro 3.0L at $2,750. This figure is calculated based on driving 15,000 miles per year, using national average fuel prices. Your personal fuel expenditure will depend on how many miles you drive annually and current gasoline prices. Remember that premium fuel is recommended for optimal performance, impacting the total cost of ownership.

Real-world expectations

While EPA estimates provide a standardized benchmark, real-world MPG can vary based on individual driving habits, traffic conditions, and even the terrain. Aggressive acceleration, frequent braking, and prolonged idling will all negatively impact fuel economy. Adopting a smoother driving style and optimizing routes to minimize congestion can improve efficiency. Some owners have reported slightly exceeding the EPA’s highway estimate in ideal conditions, while others have found the city MPG to be a challenge to achieve in heavily congested areas. Dive into A6 MPG across all years to view the range of reported fuel economy across Audi A6 generations.

How it compares

Compared to its competitors, the 2015 Audi A6 3.0T’s fuel economy lands in a competitive, but not class-leading, position. A similarly equipped BMW 535i xDrive from the same year, with its 3.0-liter turbocharged inline-six and all-wheel drive, offers comparable MPG figures, often within 1-2 MPG. The Mercedes-Benz E400 4MATIC, with its 3.0-liter twin-turbo V6, presents a similar scenario. That difference doesn’t dissuade Audi A6 buyers, who often prioritize the quattro system’s superior grip and handling dynamics, even if it comes at a slight MPG penalty. Drivers who want the badge with significantly better MPG in this category might investigate the Lexus GS 450h hybrid, usually reaching around 31 MPG combined, trading performance for efficiency.

Tips to maximize efficiency

The supercharged 3.0-liter V6 responds well to smooth and steady acceleration. Avoid aggressive throttle inputs, especially from a standstill, as this is where the engine consumes the most fuel. Instead, gradually build speed to achieve better fuel efficiency in city driving.

Maintaining proper tire inflation is critical for optimizing fuel economy. Check your tires regularly and inflate them to the pressure recommended on the sticker located on the driver’s side doorjamb. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel.

Use the Audi Drive Select system to choose the “Efficiency” mode when appropriate. This setting adjusts the engine and transmission mapping to prioritize fuel savings. While it may slightly reduce throttle response, it can make a noticeable difference on longer drives or in steady-state cruising.

Avoid carrying unnecessary weight in the vehicle. Extra cargo adds to the overall mass, requiring more energy to accelerate and maintain speed. Remove any items from the trunk that are not essential for your daily driving routine.

Consider using cruise control on the highway to maintain a constant speed. This helps minimize fluctuations in fuel consumption and can lead to improved MPG. Avoid sudden acceleration or braking while using cruise control to maximize its effectiveness.

Browse all Audi fuel economy data to compare the 2015 A6 with other models.