Carlos Sainz Jr. (LEFT) will make his Formula 1 testing debut when he joins Antonio Felix da Costa in the Red Bull lineup for next month's young driver test at Silverstone.
Sainz, son of World Rally legend Carlos, is currently racing in GP3. The 18-year-old will drive on the final day of the July 17-19 test, after da Costa has had the car for the first two.
Portuguese driver da Costa also took on Red Bull duties in last season's young driver test, and was the team's reserve driver at the Chinese and Canadian Grands Prix. He also has previous F1 testing experience with Force India.
Da Costa is racing in Formula Renault 3.5 this year alongside his Red Bull duties.