Should be 25 years or older (Exemption from EPA and DOT standards) Cars 25 years or older do not have to meet both EPA and DOT standards. You must hire Registered Importer (RI) to comply with DOT standards for vehicles newer than 25 years old. Cars 21 years or older do not have to meet EPA standards. You must also hire Independent Commercial Importer (ICI) to comply with EPA standards for vehicles newer than 21 years old.
US Custom: US Customs EPA: Environmental Protection Agency (EPA) DOT: Department of Transportation (DOT)