The brief alphanumerics R134a and R1234yf are codes for a growing battle between carmakers, states and the EU. The air-conditioning refrigerant R134a has been banned by the EU for being too damaging to the environment, with R1234yf mandated as its replacement. Daimler and Volkswagen say that in their own studies, though, R1234yf can be more dangerous in an accident, potentially starting fires and releasing poisonous hydrogen fluoride gas.
Autoblog , French court lifts registration ban on Mercedes with contested refrigerant, French court lifts registration ban on Mercedes with contested refrigerant
