The 2021 Audi Q3 S-line quattro 2.0L gets 23 MPG combined, which may not be the best in its class, but isn’t a major drawback for many buyers. These buyers prioritize style, technology, and the Audi brand, and are willing to accept slightly lower fuel efficiency. They want a compact SUV with premium features and the security of all-wheel drive, where fuel cost is a secondary consideration.

City and highway performance

The EPA estimates the Q3 S-line quattro at 20 MPG in the city and 28 MPG on the highway. That city number reflects typical stop-and-go traffic, where many Q3s will spend much of their time. The strong 2.0L turbocharged engine provides good acceleration, tempting drivers to accelerate quickly, which affects fuel consumption. On the highway, 28 MPG is respectable, but not class-leading. Maintaining consistent speeds and using cruise control will help achieve that figure. The eight-speed automatic transmission generally selects the right gear, but sometimes hesitates to downshift, potentially affecting passing power and fuel economy.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Audi Q3 S-line quattro at $1,900. This is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel cost will vary based on your driving habits, city versus highway driving, and the price of gasoline. Expect to exceed $1,900 if you primarily drive in the city and accelerate quickly. Drivers who spend more time on the highway and drive efficiently may spend less.

Real-world expectations

EPA numbers are a useful benchmark, but real-world fuel economy often differs. Owners often report slightly lower figures than the EPA estimates, typically around 21-22 MPG combined. This is due to driving style, traffic, and even weather. Fast acceleration, frequent short trips, and extended idling all decrease fuel efficiency. Checking your Q3’s trip computer and tracking fuel consumption provides a more accurate picture of your fuel economy.

How it compares

The Audi Q3 S-line quattro faces stiff competition in the compact luxury SUV segment. The BMW X1 xDrive28i achieves a combined 25 MPG, making it a slightly more fuel-efficient choice. The Mercedes-Benz GLA 250 4MATIC achieves a comparable 26 MPG combined, also bettering the Q3. Even the Volvo XC40 T5 AWD, with its Scandinavian design, manages 26 MPG combined. For buyers prioritizing fuel economy, these alternatives are worth considering, although they may lack the specific style and features that appeal to Audi enthusiasts. Potential buyers should also consider the Lexus UX 250h, a hybrid that outperforms the Q3 with 41 MPG combined, though its driving dynamics and sporty appeal are quite different. For a broader view, examine Q3 MPG across all years.

Tips to maximize efficiency

Gentle acceleration is key to saving fuel in the Q3. Avoid pressing the accelerator hard, especially when starting. Gradual acceleration lets the turbocharger work more gradually, reducing the amount of fuel injected.

Make sure your tires are inflated to the recommended pressure, which is on a sticker inside the driver’s side doorjamb. Underinflated tires create more rolling resistance, making the engine work harder and consuming more fuel. Check your tire pressure regularly, especially during temperature changes.

Remove unnecessary weight from the vehicle. Extra cargo in the trunk or back seat adds weight, affecting fuel economy. Remove any items that you don’t need regularly. Even small weight reductions can add up.

The Q3’s quattro all-wheel-drive system provides excellent traction and stability, but it also adds weight and complexity, slightly reducing fuel economy compared to front-wheel-drive vehicles. Since this S-Line has quattro standard, there’s no option to select a more fuel-efficient drivetrain. Keep it properly maintained per Audi’s service schedule.

Plan your routes to avoid congested areas and minimize stop-and-go traffic. Navigation apps can help you find more efficient routes, even if they are slightly longer. Adapting your route based on traffic can improve your fuel economy. For more information, explore all Audi fuel economy data.