This requires the ECU to regulate itself, by either speeding up, coasting, or stopping on highways (ACC). Your Audi will have a specified sweet spot, for the best speed to cruise at, often between 55 - 70 mph. Keeping it there, with the RPMs low, will provide you with optimal fuel economy. The Audi Q4 e-tron quattro—and its Sportback sister—are the most fuel-efficient vehicles offered by the brand, but even some of their gas-powered cars get great mileage, such as the 2022 Audi A3 Audi, a German luxury brand, is known for its technology, style, performance, and well-crafted interiors. Home Cars Audi Audi Q7 Audi Q7 MPG 595 Audi Q7s have provided 13.4 million miles of real world fuel economy & MPG data. Click here to view all the Audi Q7s currently participating in our fuel tracking program. 2023 20.6 Avg MPG 3 Vehicles 42 Fuel-ups 14,054 Miles Tracked View All 2023 Audi Q7s 2022 19.4 Avg MPG 4 Vehicles 127 Fuel-ups The Q7 is not offered with a fuel-saving hybrid system. Its most efficient configuration is the base model with a turbocharged four-cylinder engine. It's rated at up to 19 mpg in city driving and 25 mpg on the highway. However, on our 75-mph highway fuel-economy loop, the Q7 2.0T turned in a respectable, 26-mpg performance, 1 mpg better than the EPA highway number and 2 mpg ahead of the Q7 3.0T. jhU4.