Three people stole a car worth RMB 20,000. They are accomplices. They surrender. If the money has been refunded, they will be sentenced to several years in prison.

Three people who stole a car worth 20,000 yuan should be sentenced to fixed-term imprisonment of not more than three years. Accessory offenses, surrendering, and returning stolen goods can result in lighter punishments.

Article 264 of the "Criminal Law" stipulates that whoever steals public or private property in relatively large amounts, or who steals repeatedly, breaks into homes, carries weapons, or pickpockets shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention. Or control, and impose or solely impose a fine.