The 2015 Audi S3 2.0L gets 26 MPG combined. While not the most fuel-efficient, it’s a reasonable figure for a compact sports sedan with strong performance. Obviously, it’s no Prius, and S3 buyers aren’t prioritizing fuel economy. Instead, this MPG represents a balance between avoiding constant gas station stops and providing the exhilarating performance expected from an Audi S model.

City and highway performance

The EPA estimates for the 2015 Audi S3 are 23 MPG in the city and 31 MPG on the highway. The 23 MPG city figure reflects stop-and-go traffic, where the S3’s responsive throttle and eager engine can lead to heavier gas consumption. The 31 MPG highway rating is more realistic on the open road, especially with cruise control and restrained acceleration. The six-speed automated manual transmission (AM-S6) is important, balancing quick shifts for performance with optimized gearing for highway cruising. It’s a compromise. This powertrain allows the S3 to achieve decent fuel economy when driven normally, but also deliver its sporty potential.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 Audi S3 is $2,250. This is based on 15,000 miles per year and the national average price for premium gasoline, which the S3 requires. Fluctuating fuel prices, individual driving habits, and annual mileage will influence this cost. Drivers with longer commutes or aggressive driving styles will likely spend more than the EPA estimate. Someone who works from home and drives less might see an annual fuel bill below $2,250. This estimate provides a useful comparison point.

Real-world expectations

While the EPA figures offer a standardized benchmark, your actual MPG will vary. The S3’s turbocharged engine reacts to driving style. Frequent acceleration, spirited driving, and using “Sport” mode will decrease fuel economy. A gentle foot, anticipating traffic, and careful throttle control can bring you closer to the EPA estimates, or even slightly above. Many owners report averaging around 24-28 MPG in mixed driving, reflecting a balance between performance and efficiency. For S3 MPG across all years, a deeper dive in real-world averages is recommended.

How it compares

The 2015 Audi S3 is in a competitive group with rivals for performance-oriented buyers. The BMW 228i xDrive, gets a slightly better 27 MPG combined with its 2.0L turbo engine and all-wheel drive. The Mercedes-Benz CLA250 4Matic also has a 26 MPG combined rating. But, the S3 is a strong contender through driving dynamics, interior quality, and driving feel. Buyers might trade a mile or two per gallon for a driving experience they prefer. While fuel economy is a factor, it’s often less important than performance and luxury when shopping for a car like the S3. Comparing all Audi fuel economy data is helpful.

Tips to maximize efficiency

A simple way to improve fuel economy in the S3 is smoother driving. Avoid quick acceleration and braking, and maintain a steady speed. The turbocharged engine responds well to gentle inputs, which will show in fuel consumption.

Regular maintenance, like timely oil changes and air filter replacements, ensures the engine runs well. A well-maintained engine is more efficient, and correct tire pressure will also improve fuel economy.

Reduce extra weight in the car. More weight adds to the load the engine must haul, which can lower the MPG. Remove unnecessary items to make it easier on the engine.

The car’s features can help. For example, use cruise control to improve your fuel efficiency during commutes.

Switching to a higher-quality fuel brand is a good choice because lower quality fuel brands may cause the engine to work harder, and subsequently cause it to burn more fuel. Avoid idling for more than 30 seconds, especially during warmer months, as turning the engine off and on actually uses less fuel than idling.