The 2019 Audi RS 5 2.9L 6-cyl achieves 21 MPG combined. An RS 5 buyer probably isn’t focused on fuel efficiency, considering this performance coupe (or Sportback) is designed to thrill with its twin-turbocharged V6, quattro all-wheel drive, and sharp handling. That 21 MPG is the cost, a compromise for the exhilarating experience. Someone cross-shopping a Prius isn’t looking at an RS 5, and vice versa.

City and highway performance

The EPA estimates the RS 5’s fuel economy at 18 MPG in the city and 27 MPG on the highway. The city figure reflects the stop-and-go driving, typically the least efficient for performance cars. The constant acceleration and deceleration strain the engine, and the RS 5’s responsive throttle can tempt drivers. The highway number is more respectable. At a steady cruise, the RS 5 settles, the turbochargers relax, and the efficient eight-speed automatic transmission keeps the engine in its sweet spot. This makes longer road trips manageable, even if you’ll stop for gas more frequently than in a more fuel-conscious vehicle.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Audi RS 5 at $2,750. This is based on driving 15,000 miles per year (45% city, 55% highway) and assumes national average fuel prices. This is a significant expense compared to more fuel-efficient vehicles. Potential RS 5 buyers should factor this into their cost of ownership. This isn’t a cheap car to fuel, but performance enthusiasts are likely willing to pay. Check out all Audi fuel economy data to see how other models stack up.

Real-world expectations

While the EPA provides an estimate, real-world fuel economy varies depending on driving habits, road conditions, and the weather. Expect numbers below 18 MPG in the city with aggressive driving in stop-and-go traffic. You might see numbers close to or slightly above 27 MPG on the highway if you drive conservatively at a consistent speed. Aggressive driving, frequent use of launch control, or track time reduces fuel economy. Premium fuel is recommended, adding to the overall cost.

How it compares

Compared to direct competitors, the 2019 Audi RS 5’s fuel economy is as expected. The BMW M4, for example, is rated at 17 MPG city and 25 MPG highway. The Mercedes-AMG C63 Coupe offers similar performance, achieving 18 MPG city/27 MPG highway. These variances are minimal; the key factor for a buyer in this segment comes down to styling, driving dynamics, and brand. Even looking at the RS MPG across all years, you’ll see a consistency that reflects the performance focus over pure efficiency. A more tangible difference exists in vehicles one rung down, like an Audi S5, which balances fun and efficiency, achieving a much better combined MPG.

Tips to maximize efficiency

Though the RS 5 prioritizes performance, you can still improve your MPG. Avoid aggressive acceleration and hard braking, especially in city driving. Gentle inputs will help the engine operate more efficiently and reduce fuel consumption.

Use the car’s drive select modes. “Comfort” mode softens the throttle response and optimizes the transmission for fuel efficiency resulting in a noticeable difference in MPG during relaxed driving.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, hurting fuel economy. Check your tire pressure regularly and inflate them to the recommended pressure on the door jamb.

Reduce unnecessary weight; extra weight increases fuel consumption. Remove unneeded items. Be mindful of roof racks or cargo carriers that create drag, reducing MPG.

Limit use of auxiliary features. Air conditioning impacts fuel economy, especially in hot weather. Use it carefully, opening the windows when appropriate to improve airflow.