17 MPG combined is a reasonable expectation for the 2025 Audi SQ8. Nobody buys the SQ8 to hypermile. This is a performance SUV, and the fuel economy figures reflect that. Its mission is to deliver rapid acceleration and confident handling in nearly all conditions, wrapped in a luxurious and technologically advanced package. The target demographic prioritizes these attributes far above saving money on gas.

City and highway performance

The official EPA fuel economy estimates for the 2025 Audi SQ8, equipped with its 4.0L 8-cylinder engine and eight-speed automatic transmission, are 15 MPG in the city and 21 MPG on the highway. These figures reflect the engine’s high output and the vehicle’s substantial weight. Stop-and-go traffic will invariably drag down the overall MPG, while steady highway cruising offers the best chance of approaching, or even slightly exceeding, the EPA’s 21 MPG estimate.

Driving with a heavy foot, however, will result in numbers well below the official ratings. The turbocharged engine and transmission programming do what they can to optimize efficiency, but ultimately, physics prevails.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2025 Audi SQ8 at $3,400. This calculation is based on driving 15,000 miles per year, with 45% of those miles driven in the city and 55% on the highway, using the national average fuel price (which fluctuates, of course). For SQ8 owners, this figure is simply a cost of doing business. It’s the price paid for the performance and prestige the vehicle provides. While some may wince at that number, it’s unlikely to deter someone already shopping in this vehicle segment. It’s a known factor, and frankly, a rounding error compared to the overall cost of owning and maintaining a high-performance luxury SUV.

Real-world expectations

While the EPA estimates provide a standardized benchmark, real-world fuel economy can vary considerably based on driving habits, traffic conditions, and even weather. SQ8 owners who frequently use the vehicle’s performance capabilities should expect figures closer to the city rating, or even lower. Conversely, those who primarily use the SQ8 for long highway commutes with minimal traffic may see numbers closer to the 21 MPG highway estimate. Frequent use of “Dynamic” mode, which sharpens throttle response and holds gears longer, will negatively impact fuel consumption. Paying attention to driving style and consciously adopting a more fuel-efficient approach can make a noticeable difference, but ultimately, the SQ8’s inherent performance characteristics will dictate the general range.

How it compares

Compared to its competitors, the 2025 Audi SQ8’s fuel economy is generally about what you’d expect for a performance SUV in its class. The BMW X5 M60i, for example, is rated at 17 MPG combined (16 city/22 highway), a nearly identical figure. The Mercedes-AMG GLE 53 Coupe achieves 19 MPG combined (17 city/22 highway). The Land Rover Range Rover Sport P530 offers slightly lower figures, at 16 MPG combined (15 city/21 highway).

These comparisons are critical for buyers carefully weighing performance against fuel costs. The SQ8 buyer is making an informed choice. They are aware that superior performance and luxury come at a price at the pump. They are weighing compromises based on their priorities. For these buyers, the fuel cost is another data point, but rarely the decisive factor.

Tips to maximize efficiency

Avoid aggressive acceleration and braking. The SQ8’s powerful engine makes it tempting to use its performance capabilities at every opportunity, but smooth, deliberate inputs will significantly improve fuel economy. Anticipate traffic flow and maintain a consistent speed whenever possible. The eight-speed automatic transmission is programmed to shift efficiently, but it requires consistent inputs to do so effectively.

Use the “Comfort” or “Auto” driving modes when performance is not a priority. These modes adjust throttle response and shift points to prioritize fuel efficiency. While “Dynamic” mode offers the most engaging driving experience, it comes at the expense of increased fuel consumption. Choosing the appropriate mode for the driving conditions can make a noticeable difference.

Ensure proper tire inflation. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressures regularly and inflate them to the recommended levels, which can be found on the driver’s side doorjamb. This seemingly small detail can contribute to a modest, but measurable, improvement in MPG.

Minimize idling. Excessive idling wastes fuel and contributes to unnecessary emissions. If you anticipate being stationary for more than a minute or two, turn off the engine. Modern engine start-stop systems help with this, but can become cumbersome if the user unneccesarily disables the system.

This is particularly relevant in urban environments with frequent stoplights. and make use of the vehicle’s Audi Connect services, which can help find the most efficient routes and provide real-time traffic updates.

Keep up with scheduled maintenance. A properly maintained engine will operate more efficiently. Regular oil changes, air filter replacements, and spark plug inspections are essential for optimal fuel economy and long-term reliability. Refer to the owner’s manual for the recommended maintenance schedule and adhere to it diligently. See all Audi fuel economy data and SQ8 MPG across all years.