Experts believe that if the automotive technology industry can reduce fuel consumption by 3% after years of research and development, it can be considered a very significant research result; but even if it can reduce fuel consumption by 3%, it is not obvious to consumers in real life  Moreover, automobile manufacturers are already trying to save fuel as much as possible without affecting the acceleration power
The current production of cars has reached the best ratio in terms of fuel saving and power
No matter how the automobile technology develops, the fuel saving effect will not be very significant