Final answer:
The 4-valve-per-cylinder design improves efficiency and performance by allowing increased airflow and better heat dissipation in the 2021 NV200. Paired with advanced transmission technologies such as DCTs and CVTs, it contributes to enhanced fuel economy and reduced CO₂ emissions.
Step-by-step explanation:
The benefit of the 2021 NV200's 4-valve-per-cylinder design lies in its ability to improve the engine's efficiency and performance. With more valves, there is increased air flow to the engine which allows for better combustion and more power output. Moreover, this design helps in facilitating better heat dissipation from the engine's combustion chamber.
Additionally, when coupled with advanced transmission technologies such as 7+ speeds, dual-clutch transmissions (DCTs), and continuously variable transmissions (CVTs), the vehicle's overall fuel economy gets enhanced, leading to a decrease in CO₂ emissions. .
These technologies offer improved gear ratios and smoother transitions, which when paired with the 4-valve design, contribute towards a more fuel-efficient and environmentally friendly vehicle. Not only does the 4-valve design help in achieving better engine performance, but also supports modern transmission systems in delivering an eco-friendlier driving experience.