The 2025 Audi Q8 e-tron quattro with 20-inch wheels gets a combined EPA rating of 78 MPG equivalent (MPGe). This number is strong for a premium all-electric SUV of this size, designed to deliver both luxury and performance while minimizing its impact on the environment. Owners are looking for zero-emission driving, advanced technology, and the premium experience expected from Audi. Therefore, 78 MPGe is a good balance of those features.

City and highway performance

The EPA breaks down the Q8 e-tron’s efficiency, with a rating of 77 MPGe in the city and 80 MPGe on the highway. This slight edge on the highway reflects how electric powertrains work. Electric motors are most efficient at lower, steadier speeds, unlike internal combustion engines.

In city driving, frequent acceleration and deceleration drain battery power. Highway cruising allows the Q8 e-tron to settle into its most energy-efficient state. Drivers who primarily use their Q8 e-tron for longer commutes or road trips should see numbers closer to the highway estimate, and those mostly doing shorter city trips will see figures closer to the city estimate.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2025 Audi Q8 e-tron quattro (20-inch wheels) at $950. This is based on driving 15,000 miles per year and using the national average electricity price. Individual driving habits, local electricity rates, and charging at home or at public charging stations will affect what owners pay.

Those who can charge mostly at home, with off-peak electricity prices, should see even greater savings over the quoted $950 annual fuel cost.

Real-world expectations

The EPA provides a standardized testing method, but real-world efficiency can vary. Driving style, weather, and payload affect the Q8 e-tron’s energy consumption. Aggressive acceleration, frequent climate control, and heavy loads will reduce range and MPGe. Gentle driving, pre-conditioning the cabin while plugged in, and optimizing tire pressure can maximize efficiency.

Ambient temperature matters. Expect range to decrease more in colder climates than in a comparable gasoline vehicle.

How it compares

The Q8 e-tron is in a competitive field of electric SUVs. The BMW iX xDrive50 achieves a combined 81 MPGe, which is slightly more efficient. The Cadillac Lyriq RWD boasts 96 MPGe combined, showing an emphasis on efficiency. The iX and Lyriq have different driving dynamics and interiors. The Mercedes-Benz EQE SUV 350 4MATIC is rated at 77 MPGe combined, near the Q8 e-tron’s number.

The Q8 e-tron’s 78 MPGe is a good option because it has Audi’s performance, luxury, and technology, without giving up too much efficiency. Potential buyers should compare Q8 MPG across all years and examine all Audi fuel economy data to make the right choice.

Tips to maximize efficiency

Use the Q8 e-tron’s regenerative braking system. You can recover energy during deceleration and reduce the need to use the friction brakes by selecting the right level of regeneration. This works well in city driving, where there are frequent stops.

Pre-condition the cabin before you leave, especially when it’s very hot or cold. Use the Audi app to heat or cool the interior while the vehicle is plugged in. This uses less energy from the battery when you drive, which preserves range and efficiency.

Check your tire pressure regularly. Tires with the right pressure reduce rolling resistance, improve efficiency, and extend range. Look at the sticker on the driver’s side doorjamb for the recommended tire pressure.

Anticipate traffic and drive smoothly. Avoid sudden acceleration and hard braking. Consistent driving saves energy and maximizes the range of your Q8 e-tron. Use the adaptive cruise control on the highway.

Use the “Efficiency” drive mode. This mode optimizes the throttle and climate control to use less energy. It may reduce performance a little, but it can extend your range.