The 2025 Audi RS 3 gets 23 MPG combined. To be clear: no one buys an RS 3 to save gas. This is a compact performance sedan engineered for blistering acceleration, razor-sharp handling, and a raucous soundtrack, so the fuel economy figure reflects those priorities and is largely irrelevant to the RS 3’s target demographic. These drivers are after a visceral experience, and they understand that experience comes at a cost.

City and highway performance

The EPA estimates 20 MPG in the city and 29 MPG on the highway for the 2025 RS 3. The city number is less than stellar, reflecting how stop-and-go urban driving constantly interrupts the engine’s efficiency. The highway figure is more respectable, the RS 3 is able to cruise comfortably at higher speeds once it’s able to settle into a more efficient operating range. However, even on the highway, expect that number to drop quickly if you’re tempted to exploit the car’s passing power. The 2.5L turbocharged five-cylinder engine and seven-speed dual-clutch transmission are optimized for performance first, economy second. This drivetrain’s eagerness to respond to throttle inputs means you’ll be consistently dipping into boost, which negatively impacts fuel consumption.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2025 Audi RS 3 at $2,500. This calculation is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind that this figure is just an estimate. Your actual fuel costs will vary depending on your driving habits, the type of fuel you use (premium is recommended for optimal performance), and local fuel prices. More aggressive driving will certainly inflate that $2,500 figure.

Real-world expectations

While the EPA estimates provide a baseline, real-world fuel economy for the RS 3 tends to hover slightly below the official numbers, especially if you embrace the car’s performance potential. Expect combined MPG in the high teens to low twenties if you regularly enjoy spirited driving. Gentle cruising may yield numbers closer to the EPA highway estimate, but the temptation to unleash the five-cylinder’s fury is ever-present. Track days or consistent use of launch control will send your fuel economy plummeting. Owners accept this trade-off; they value the experience more than marginal fuel savings. They are buying a thrilling driving experience, not a Prius. Looking at RS MPG across all years allows a deeper understanding of its historical performance. Those seeking maximum fuel savings should explore all Audi fuel economy data to find a more efficient option.

How it compares

Compared to its rivals, the RS 3’s fuel economy is generally in line with other high-performance compacts, but definitely not leading the category. The Mercedes-AMG CLA 45 S, another performance-oriented four-door coupe, achieves a similar 23 MPG combined, showing that these vehicles value performance over saving gas. The BMW M2, when equipped with its automatic transmission, lands close to the RS 3 as well. A less direct competitor like a Subaru WRX returns around 22 MPG combined. These comparisons highlight the trade-off inherent in this segment: more power and performance come with a sacrifice in fuel efficiency. The RS 3 buyer is choosing exhilarating performance over the frugality of a less powerful, economy-focused vehicle.

Tips to maximize efficiency

While saving gas might not be the primary goal for RS 3 owners, it’s still possible to improve efficiency without completely sacrificing the driving experience.

One key strategy is to moderate your throttle inputs. The RS 3’s turbocharger is eager to provide boost, but every time it spools up, it consumes more fuel. Gentle acceleration and anticipating traffic flow to avoid unnecessary braking can make a noticeable difference over time.

Use the car’s driving modes. The “Efficiency” mode recalibrates the throttle response and shift points for optimal fuel economy. While it may reduce the car’s performance somewhat, it can be beneficial for long highway stretches where maximum power isn’t required.

Ensure proper tire inflation. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressures regularly and maintain them at the recommended levels specified on the door placard. This simple step can improve fuel efficiency and tire life.

Avoid extended idling. Letting the engine idle for long periods wastes fuel. If you’re going to be stopped for more than a minute, it’s best to turn off the engine. The RS 3’s engine is modern enough that restarting it won’t cause undue wear and tear.