Tht would vry between countries, but in UK it was 1992.
The first year for Catalytic converters was 1975They were first required on all cars in 1975.
1975 and later.
1975
in 1975
1975
They where required for the 1975 model year.
1975
Any vehicle sold in the U.S. since 1975.
In the USA original equipment catalytic converters are generally covered under the 8 year, 80,000 mile federal emissions warranty.
1-3 it depands on the year
The Jeep CJ7 began incorporating catalytic converters in 1975, as part of new emissions regulations implemented in the United States. This change was aimed at reducing harmful exhaust emissions from vehicles. The CJ7 continued to use catalytic converters throughout its production run until 1986.
They have been installed on all vehicles since 1975.