19. Audi RS Q8

The Audi RS Q8 represents the pinnacle of Audi’s SUV lineup, blending aggressive styling, sophisticated luxury, and high-performance engineering.
Under the hood, its 4.0-liter twin-turbocharged V8 engine produces a remarkable 591 horsepower, enabling a rapid 0-60 mph sprint in just 3.7 seconds.
While these performance credentials are undeniably impressive, they come at the cost of efficiency, with the RS Q8 achieving EPA estimates of just 13 mpg city and 19 mpg highway.
Compared to rivals such as the BMW X6 M and Mercedes-AMG GLE 63 S, the RS Q8’s fuel consumption remains notably higher, prioritizing thrilling performance over fuel economy.
Source: FuelEconomy.gov