15 MPG combined is the stark reality for anyone considering a 2020 Audi RS Q8. This isn’t a design flaw, but a trade-off made for strong performance in a large, luxurious SUV. The RS Q8 is not bought by people prioritizing fuel efficiency; it’s purchased by those who demand relentless acceleration, confident handling, and distinctive styling, accepting the fuel costs.

City and highway performance

The official EPA figures reveal 13 MPG in the city and 19 MPG on the highway for the 2020 Audi RS Q8. The difference highlights the impact of stop-and-go driving on this particular vehicle. The RS Q8 is heavy, and its 4.0-liter twin-turbo V8 demands significant fuel to repeatedly overcome inertia, while the highway figure, though still low for an SUV, shows some of the engine’s relative efficiency when cruising at stable speeds. The aggressive tuning of the eight-speed automatic transmission (S8) further contributes to less-than-stellar city MPG, prioritizing rapid downshifts and assertive acceleration over fuel conservation.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2020 Audi RS Q8 is $3,850. This figure is based on driving 15,000 miles per year and using the current national average price of fuel. Individual fuel expenses will vary depending on driving habits, local fuel prices, and the type of fuel used. The RS Q8, with its high-performance engine, requires premium gasoline, adding to the running costs. It’s the price to pay for the immediate power.

Real-world expectations

Drivers should expect to see MPG figures close to, or even slightly below, the EPA estimates, especially those who frequently push the RS Q8. The temptation to unleash the V8’s power is ever-present, and frequent bursts of acceleration will affect fuel economy. However, those who drive primarily on the highway, and exercise disciplined throttle control, might see numbers closer to the 19 MPG estimate.

How it compares

Compared to its rivals, the RS Q8’s fuel economy is on the lower end. The BMW X6 M, another performance-oriented SUV, achieves around 16 MPG combined with its high-output V8. The Mercedes-AMG GLE 63 S Coupe hovers around the same 15 MPG combined rating. While some non-performance oriented SUVs like the Audi Q7 with the 3.0T engine can reach towards 20 MPG combined, these vehicles sacrifice significant performance, something RS Q8 buyers are unwilling to do. The Lamborghini Urus, sharing the RS Q8’s platform and engine, delivers nearly identical fuel consumption figures. For an overview of all Audi fuel economy data, browse our fuel economy guides. You can also compare RS MPG across all years.

Tips to maximize efficiency

Use Audi Drive Select to choose the “Efficiency” mode when appropriate. This setting adjusts the engine and transmission mapping to prioritize fuel conservation over performance. The throttle response becomes less aggressive, and the transmission upshifts earlier, helping to minimize fuel consumption during casual driving.

Practice smooth and consistent driving habits. Avoid abrupt acceleration and hard braking, as these actions consume significantly more fuel. Anticipate traffic flow and maintain a steady speed whenever possible to minimize the need for constant speed adjustments.

Keep the RS Q8’s tires properly inflated. Underinflated tires increase rolling resistance, which increases fuel consumption. Check your tire pressure regularly and inflate them to the manufacturer’s recommended levels, found on the sticker inside the driver’s side door jamb.

Minimize idling time by turning off the engine if you anticipate stopping for more than a minute or two to avoid wasting fuel. The RS Q8’s engine is designed for relatively quick restarts, making this a viable strategy for saving fuel.

Lighten the load. The RS Q8 is already heavy, so avoid carrying unnecessary weight in the cargo area or on the roof. Extra weight increases the engine’s workload and reduces fuel economy. Remove any items you don’t need to carry regularly.