23 MPG combined is the fuel economy to consider for the 2025 Audi Q3 S-Line quattro with its 2.0L 4-cylinder engine. It’s a figure that won’t win any awards, but many buyers considering this combination of luxury, performance, and all-weather capability are prepared to accept it. This isn’t a basic economy car; it’s a stylish, well-appointed compact SUV designed for urban drivers and families who prioritize the driving experience and brand over saving on fuel. The Q3 S-Line delivers strong power and sure handling, a worthwhile trade-off for many.

City and highway performance

The EPA estimates for the 2025 Q3 S-Line quattro are 20 MPG in the city and 28 MPG on the highway. The city figure reflects stop-and-go traffic and stress on the turbocharged engine during acceleration. The highway number, while decent, suggests the Q3, even with its eight-speed automatic transmission (S8), isn’t designed for hyper-miling. It’s tuned for responsive acceleration when passing and merging, which affects fuel consumption. These numbers are in line with what you’d expect from a small SUV with standard all-wheel drive.

Annual fuel cost

According to EPA estimates, drivers of the 2025 Audi Q3 S-Line quattro 2.0L can expect to spend approximately $2,500 per year on fuel. This calculation is based on driving 15,000 miles annually, using a mix of city and highway driving, based on the national average fuel price at the time of the EPA’s tests. This is an estimate; actual fuel costs will vary depending on driving habits, local fuel prices, and time spent in city versus highway conditions.

Real-world expectations

While the EPA figures provide a standardized benchmark, real-world fuel economy can vary. Owners who often use the Q3’s sport mode or drive mostly in demanding city environments may see figures near the low end of the EPA range, or even below. Those who accelerate smoothly and drive more on the open road may find results closer to, or exceeding, the highway estimate. Driving style and factors like temperature and elevation can also affect MPG. Drivers in colder areas may experience lower fuel economy due to the energy needed to warm the engine.

How it compares

Within the luxury compact SUV segment, the Q3 S-Line’s fuel economy is in the middle. A BMW X1 xDrive28i, for example, achieves a slightly better 25 MPG combined. A front-wheel drive Lexus UX gets a much better 33 MPG combined, though it lacks the Q3’s turbocharged power and all-weather confidence. The Mercedes-Benz GLA 250 4MATIC, a similar competitor, gets an identical 23 MPG combined. These comparisons are important for buyers considering options within this segment. Performance versus economy is a balance. Q3 buyers often prioritize the driving experience more than maximum fuel efficiency, but it’s wise to review all Audi fuel economy data to see how this model performs.

Tips to maximize efficiency

Avoid hard acceleration and braking. The Q3’s turbocharged engine responds well to a light touch, and quick bursts of acceleration will quickly use fuel. Watch traffic and keep a steady speed to prevent frequent turbocharger use. Consider using “Efficiency” mode.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, making the engine work harder and use more fuel. Check your tire pressure regularly, especially when temperatures change, and inflate them to the pressure on the doorjamb sticker. Neglecting this maintenance can hurt your Q3 Q3 MPG across all years.

Minimize idling. Idling wastes fuel. If you expect to be stopped for more than a minute or two, turn off the engine. The Q3’s automatic start/stop system helps, but you can manually turn off the engine where the system might not activate.

Reduce aerodynamic drag. Remove unnecessary items from the roof rack, as they create wind resistance and reduce fuel efficiency. Also, close the windows at highway speeds to reduce drag. Aerodynamic drag affects all vehicles, not just the Q3 S-Line.