17 MPG combined isn’t going to win any awards for using less gas, but for the 2024 Audi RS 6 Avant, it’s practically irrelevant. This isn’t a car (or wagon, rather) purchased with lower fuel costs in mind. It’s bought by those who prioritize blistering performance, iconic design, and the practicality of a rear hatch, even if that means frequent stops at the pump. The soundtrack of its 4.0-liter V8 is worth the price of admission and the gas that feeds it.

City and highway performance

The official EPA estimates peg the RS 6 Avant at 14 MPG in the city and 22 MPG on the highway. Observe the wide difference: these figures tell the story of a powerful engine loafing along when cruising but getting very thirsty under harder acceleration. Expect the lower end of that range if you’re spending most of your time navigating stop-and-go traffic, enjoying the instantaneous throttle response between lights. The highway number is more achievable, but even there, resisting the urge to unleash the V8’s full potential will be key to meeting or exceeding 22 MPG.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2024 Audi RS 6 Avant is $3,400. This figure is based on driving 15,000 miles per year and using the national average fuel price at the time of calculation. Keep in mind that premium fuel is recommended (or even required) for optimal performance and longevity in this high-performance engine, so expect to pay more than the average price at the pump.

Real-world expectations

While the EPA provides a standardized baseline, real-world fuel economy can vary significantly based on driving style, road conditions, and even weather. Drivers who accelerate hard will likely see MPG figures well below the official estimates, especially in urban environments. Regular maintenance including properly inflated tires and timely oil changes can also contribute to maximizing fuel efficiency. Many owners don’t track this so closely, but for those who are curious, the car’s trip computer can offer some insights.

How it compares

The performance wagon market is small, and comparisons are inevitable. The Mercedes-AMG E63 S Wagon, while discontinued after 2023, was a direct rival, offering similar performance and fuel economy numbers. It typically achieved a combined MPG in the same 16-18 range when it was sold. The Porsche Panamera Sport Turismo, particularly in its higher-performance trims, also offers a blend of practicality and speed, but often exceeds the RS 6 in terms of price. A Panamera Turbo S E-Hybrid Sport Turismo offers more power and similar MPG in hybrid mode. The BMW M5 Touring, returning after a long hiatus, will be a key new competitor, though its fuel economy is yet to be finalized. Comparing economy across these models might be secondary; the appeal lies in their unique character.

Tips to maximize efficiency

Use the Audi Drive Select system carefully. In Comfort or Efficiency mode, the car will prioritize fuel savings with softer throttle response and earlier upshifts. While it might tame the beast somewhat, it can make a noticeable difference during daily commutes.

Avoid aggressive acceleration and braking. The RS 6’s powerful engine is eager to please, but smooth, deliberate driving habits are essential for conserving fuel. Treat the accelerator pedal with respect, and anticipate traffic flow to minimize unnecessary braking.

Maintain proper tire inflation. Under-inflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressures regularly and inflate them to the recommended levels, which can be found on the driver’s side doorjamb.

Lighten the load. Carrying unnecessary weight in the vehicle decreases fuel economy. Remove any items from the trunk that aren’t essential, and avoid using a roof rack or cargo carrier unless absolutely necessary, as they increase aerodynamic drag.

Consider your route. Highway driving generally yields better fuel economy than city driving. When possible, opt for routes that minimize stop-and-go traffic and allow for consistent speeds. Also, exploring all Audi fuel economy data can give you a broader perspective.

To investigate RS MPG across all years can reveal economy trends of the family.