When you transfer a vehicle that is four or less model years old a smog certification is not required. A smog transfer fee will be collected from the new owner. When a vehicle is more than four model years old, a seller must provide evidence of a current smog certification except when the following occurs:
The transfer occurs between a spouse, sibling, child, parent, grandparent, or grandchild.
A biennial smog certification was submitted to DMV within 90 days prior to the vehicle transfer date (a vehicle inspection report may be required for proof of certification).
Smog certifications are good for 90 days from the date of issuance.
중고차 매매할때 판매자가 스모그 체크를 한 뒤에 팔아야 되는 걸로 알고 있습니다. 팔기 전 3개월전에 해야 유효하구요 차량을 팔고 난 뒤엔 구매자, 판매자 모두 DMV에 신고를 해야 될 겁니다. 15일안에 해야 되던가 그렇습니다. 예전에 아는 분이 중고차를 팔려고 스모그 체크를 했는데 통과하지 못해서 매연 잡는데 차값보다 더 나온다길래 그냥 폐차시켰다고 하더군요