1995
In which country?
All cars manufactured after 1993 were required to use R134a refrigerant.
the year that Henry ford sent out cars to Ontario, Canadaotherwise, 1938
1993 in the US
1976
1990
1995, was the last year for most cars. Anything 96 and newer uses R134a.
1987
1984
after 1985?
I believe it was in 1992.
1992 was the first year some vehicles began to use R134a, and it was mandated in all vehicles by 1995.