Formula One team Sauber says it is retaining drivers Kamui Kobayashi and Sergio Perez for the 2012 season.
Kobayashi, a 24-year-old from Japan, is 11th in the drivers' standings in his second full season.
Team owner Peter Sauber says Kobayashi "has grown into his role extremely well" as the senior driver.
Perez, a 21-year-old Mexican, ranks 14th in the standings in his debut season.
Sauber says 19-year-old Esteban Gutierrez of Mexico will stay on as the test and reserve driver in 2012.