Ocon joined Renault for 2020, signing a two-year contract and marking his return to Formula One as a full-time driver. He replaced Nico Hülkenberg and partnered with Daniel Ricciardo. Ocon qualified 14th on his Renault debut at the Austrian Grand Prix and finished eighth out of eleven finishers. He qualified fifth for the and was running in seventh place when he retired with a cooling issue. Ocon finished sixth at the , having gained positions in the closing laps when cars ahead suffered tyre failures. At the following weekend's 70th Anniversary Grand Prix, he was issued a grid penalty after impeding George Russell in qualifying and started 14th, but improved to finish eighth in the race. His best race finish since 2017 came at the , where he qualified sixth and finished fifth behind teammate Ricciardo.