Team boss Monisha Kaltenborn said: "We are pleased about the extension and doing it so early shows that the drivers, and the team, are sure they are heading in the right direction.

"We have full confidence in the talents and skills of Marcus and Felipe."

Swede Ericsson, 24, joined Sauber this year following a debut season with the defunct Caterham team last year and finished eighth in the season-opening Australian Grand Prix, his best result to date.

Brazilian Nasr made his F1 debut with Sauber this year, finishing fifth in Australia and proving his potential with strong performances. He has scored 16 points and is 11th in the drivers' championship.

The drivers' announcement follows Sauber's continued calls this week for an overhaul of Formula One to cut costs, level the playing field and improve the show.

Latest News from Sports News Desk