Iran: Air pollution emissions standards of 1998
All cars, both imported and domestic, have had to meet the ECEISO4 standards for emissions, and in the upcoming Iranian year manufacturers will be required to observe ECE-R83 standards, and the standards for light vehicles in Iran have been effectively increased to ECE R15.04 / ECE R49. Although already an accepted standard in Iran, this was generally not enforced until 2000.
Date Implemented: 1999/2000