16 MPG combined is not a suggestion of efficiency; it is an affirmation of purpose. The 2026 Audi RS 7, with its 4.0L twin-turbocharged V8, is not designed to sip fuel. It is engineered to obliterate asphalt, to launch from a standstill with the urgency of a superbike, and to hold its own against sports cars on a mountain pass, all while cocooning its occupants in supreme luxury. The buyers of this vehicle are fully aware of this trade-off. They are individuals who prioritize devastating performance, exceptional handling dynamics, and cutting-edge technology wrapped in an understated package. Fuel economy, while acknowledged, is a distant secondary consideration to the visceral thrill and prestige this five-door supercar offers. They are paying for a machine that delivers an experience, not just a commute.

City and highway performance

Looking at the EPA figures, the 14 MPG in city driving for the RS 7 makes perfect sense. This is a high-performance engine, and physics dictate that moving nearly 4,700 pounds of premium machinery from a stop multiple times, often with enthusiastic throttle inputs, will consume a significant amount of premium unleaded. The 8-speed automatic transmission is a masterclass in power delivery, but even it cannot defy the laws of thermodynamics when 621 horsepower is unleashed. On the highway, the RS 7 sees a notable improvement to 21 MPG. This is where the engine’s inherent efficiency, when operating in less demanding conditions at a steady cruise, can shine through. Cylinder deactivation technology subtly kicks in, allowing the V8 to operate on four cylinders under light loads, even if the primary goal remains unadulterated speed.

Annual fuel cost

The EPA estimates an annual fuel cost of $3,600 for the 2026 Audi RS 7. This figure is based on a standard assumption of 15,000 miles driven per year, split between city and highway driving, and using national average fuel prices, which for the RS 7 means premium gasoline. For the typical RS 7 owner, this annual expenditure is often a negligible line item in their overall financial picture. The cost of the vehicle itself, its insurance, maintenance, and potential customization far overshadow the fuel bill. It’s a cost of entry, a characteristic of owning a vehicle of this caliber that delivers such a profound level of performance and luxury. This is not a purchase made for sensible economics, it’s an emotional decision backed by a healthy bank account.

Real-world expectations

In the real world, owners of the 2026 Audi RS 7 should expect their actual fuel economy to hover around the EPA combined figure, possibly dipping below it depending on driving habits. The allure of the RS 7 is its almost limitless power, and it’s a rare owner who consistently resists the urge to tap into that potential. Every full-throttle acceleration, every aggressive corner exit, every impromptu sprint will naturally consume more fuel. However, for those extended highway cruises, especially with adaptive cruise control engaged, achieving or even slightly exceeding the 21 MPG highway figure is entirely plausible. The RS 7 is designed to be effortlessly fast, meaning it can maintain high speeds with relatively little effort from the engine, contributing to better efficiency when not being pushed.

How it compares

The RS 7 operates in an exclusive segment where outright fuel efficiency is secondary to performance and prestige. Comparing it to its direct rivals illuminates this point. A Mercedes-AMG GT 63 S 4-Door Coupe, its closest competitor in philosophy and performance, typically achieves 17 MPG combined (15 city/20 highway). The Porsche Panamera Turbo S E-Hybrid offers a more complex comparison, with an impressive 20 MPGe combined when factoring in its electric range, but only 21 MPG combined on gasoline alone, and a significantly higher purchase price. For a non-hybrid, high-performance luxury sedan or “coupe,” the RS 7’s 16 MPG combined is very much in line with its peers. It’s a clear indication that if you need more efficiency, you are either looking at a different class of vehicle or opting for a plug-in hybrid variant, which brings its own set of compromises and a distinctly different driving character. For information on all Audi fuel economy data, our database is a valuable resource, and for specifics on this model, you can explore RS MPG across all years.

Tips to maximize efficiency

While the RS 7 is built for speed, judicious driving can still yield slightly better fuel economy than simply flooring it everywhere. Using the “Efficiency” drive mode available via Audi Drive Select will adjust throttle response, transmission shift points, and even HVAC settings to prioritize fuel savings, making daily commutes marginally less thirsty.

Maintaining consistent highway speeds while engaging adaptive cruise control provides the smoothest operation and avoids unnecessary acceleration and deceleration, allowing the cylinder deactivation system to function optimally and maximize that 21 MPG highway rating.

Paying attention to tire pressure is a simple yet effective tip. Properly inflated tires reduce rolling resistance, which in turn demands less effort from the engine, translating to minor but measurable fuel gains.

Anticipatory driving, looking far ahead, understanding traffic flow, and gently coasting to stops rather than braking hard at the last minute, reduces the number of times the RS 7’s prodigious power is required to overcome inertia, which is especially beneficial in city driving situations.

While often overlooked in performance vehicles, reducing unnecessary weight in the trunk or rear cargo area can marginally impact fuel consumption. Every extra pound the engine has to move requires more fuel, no matter how small the increase.