Legal analysis: the seized car can't be bought unless it is auctioned by the court. Without the court's handling, the seized vehicle shall not be sold or transferred. As for the fees paid for the previous car purchase, you can choose to sue the seller in another case. However, if you know that the other vehicle is a vehicle seized by the court and continue to buy it, it is illegal.

Legal basis: Article 21 of the Provisions of the Supreme People's Court on the Attachment, Seizure and Freezing of Property in Civil Execution by People's Courts shall be limited to the amount sufficient to pay off the creditor's rights and execution expenses determined by legal documents, and the amount obviously exceeding the standard shall not be attached, detained or frozen.