Why is the BMW M9's fuel economy superior to other sports cars?

I've heard that the BMW M9 has excellent fuel efficiency compared to other high-performance cars. What makes it stand out in this aspect and how does it achieve such impressive numbers?

The BMW M9 has a highly-efficient engine that utilizes advanced technologies such as turbocharging and direct injection. This results in better combustion and less fuel consumption. Additionally, the car's lightweight construction and aerodynamic design also contribute to its impressive fuel efficiency.

One of the key factors that sets the BMW M9 apart is its start-stop system, which automatically shuts off the engine when the car is stationary, such as at a red light. This results in significant fuel savings, especially in city driving.

Another factor that plays a role in the BMW M9's fuel economy is its advanced transmission system. The car uses a dual-clutch automatic transmission that is more efficient than traditional automatics, allowing for smoother gear shifts and improved fuel efficiency.