Final answer:
The 2023 LEAF's rear diffuser benefits the vehicle by improving aerodynamics, which enhances stability, reduces drag, increases fuel efficiency, and potentially extends the car's range.
Step-by-step explanation:
The benefit of the 2023 LEAF's rear diffuser is primarily related to its role in improving the vehicle's aerodynamics. A rear diffuser is a shaped section of the car's underbody that improves the car's aerodynamic properties by enhancing the transition between the high-velocity airflow underneath the car and the much slower free stream airflow of the ambient atmosphere. It does so by facilitating a smooth outflow of air from beneath the car and increasing downforce, which can result in better grip and stability at higher speeds.
Rear diffusers work by accelerating the air underneath the vehicle, thereby reducing the wake—or turbulent air patch—behind it. This reduction in turbulence and drag contributes to improved fuel efficiency and can enhance the overall performance and handling of the car. In an electric vehicle like the 2023 LEAF, such efficiency gains are particularly beneficial as they can help to extend the vehicle's range on a single charge, making it more economical and environmentally friendly.