In CA, Old car registration/smog check due at end of September, can I sell/trade-in end of August without paying? Do I have to tell the dealer/private party about this.
In California, you must get a smog check when selling a car privately. You usually do not need a smog check if you are selling to a dealer. Just tell the dealer it hasn't been smogged and they'll take care of it and/or adjust the sale price accordingly.
This web site has all the details: