Which refrigerant is commonly used in new vehicles due to its low environmental impact?

D is the refrigerant commonly used in new vehicles because it has a significantly lower environmental impact compared to the alternatives. R-1234YF is a hydrofluoroolefin (HFO) refrigerant that has a much lower Global Warming Potential (GWP) than older refrigerants. This characteristic makes it more environmentally friendly and aligns with modern regulations aimed at reducing greenhouse gas emissions.

In the context of vehicle air conditioning systems, the use of refrigerants with lower GWP is increasingly becoming a priority due to environmental regulations and a growing awareness of climate issues. R-1234YF meets these criteria very effectively, making it the preferred choice in the automotive industry for new vehicle models.

Other refrigerants mentioned, like R-22, R-134A, and R-410A, have higher GWPs and are either being phased out or are not suitable for automotive use in newer vehicles due to their environmental impact. Thus, R-1234YF stands out as the most environmentally responsible option currently in use for cooling applications in vehicles.