The 2023 Audi S3’s 26 MPG combined fuel economy isn’t the primary draw. People buy it for its sharp handling, punchy turbocharged engine, Quattro all-wheel drive, and distinctive Audi styling. While respectable, the fuel economy is secondary for buyers who value performance and image in a compact car.

City and highway performance

EPA estimates suggest 23 MPG in the city and 32 MPG on the highway. These figures reflect the S3’s dual nature. In the city, the responsive throttle and quick-shifting seven-speed dual-clutch transmission encourage spirited driving, decreasing fuel consumption. On the highway, the car cruises more efficiently, allowing the turbocharger to work less and the transmission to select higher gears. The highway figure is achievable with a light foot, but many drivers will likely use the turbo for passing, slightly reducing that number. The S3’s small size provides exceptional stability at higher speeds, tempting drivers to maintain a brisk pace.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2023 Audi S3 is $2,250. This is based on driving 15,000 miles per year, using a mix of city and highway driving, and assuming the national average fuel price. Note that premium fuel is required for the S3, which increases the cost compared to regular gasoline. Individual fuel costs will vary depending on driving habits, local prices, and how often the S3’s performance is fully exploited.

Real-world expectations

While the EPA estimates provide a baseline, most S3 owners will likely see figures slightly below the combined 26 MPG in real-world driving due to the car’s sporty nature which encourages fast acceleration and frequent use of the sport modes, all of which impact fuel economy.

Expect somewhere between 22-27 MPG in mixed driving, and perhaps closer to the EPA highway number on long trips, if you avoid rapid driving. Consider checking S3 MPG across all years to see how the current model compares to previous generations.

How it compares

The Audi S3’s fuel economy places it in a competitive segment with other sporty compact cars. The BMW M235i xDrive achieves 26 MPG combined, mirroring the S3’s rating, but offers a different driving experience with its inline-six engine and rear-biased all-wheel-drive system. The Mercedes-AMG CLA 35 manages a similar 25 MPG combined. The Acura Integra Type S, while not directly comparable in drivetrain layout, promises a similar blend of performance and practicality, achieving 24 MPG combined. These buyers are often willing to trade a few MPG for the performance and prestige these brands offer. For those more concerned about lower fuel costs, they could consider its sibling, the Audi A3, which offers similar styling and features with a more efficient engine, if you want to see all Audi fuel economy data. These buyers prioritize the image and driving dynamics of a premium performance car, accepting a fuel economy that is merely adequate.

Tips to maximize efficiency

Use the Audi Drive Select system and choose the “Efficiency” mode when possible. This mode adjusts the engine and transmission settings to prioritize fuel conservation, softening throttle response and upshifting earlier, which can noticeably improve mileage in steady-state driving.

Monitor your driving style. The S3’s turbocharged engine is responsive, but aggressive acceleration and frequent high-RPM driving will dramatically reduce fuel economy. Aim for smooth, gradual acceleration and anticipate traffic flow to minimize unnecessary braking.

Ensure your tires are properly inflated. Under-inflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressures regularly and maintain them at the recommended levels. The optimal tire pressure is listed on a sticker inside the driver’s side doorjamb.

Reduce unnecessary weight. Remove any items from the car that you don’t need, as extra weight puts a strain on the engine and reduces fuel economy. A lighter car accelerates and brakes more efficiently, conserving fuel in the process.