For the 2000 season, he moved to the higher-tier International Formula 3000 Championship with the Minardi-backed Team Astromega. Driver Robert Lechner lacked the sponsorship money to drive for Astromega and Benetton's operations director Joan Villadelprat advised its manager Sam Boyle to enquire Campos about Alonso. Astromega signed Alonso after a two-day test session at the Circuit de Catalunya. Alonso improved his English to better communicate with mechanics and Rob Smedley was his race engineer. His Lola had an understeer that was removed with a set-up alteration to include additional oversteer and increase Alonso's comfort. Astromega allowed Campos to attend the team's technical meetings since Alonso wanted his feedback. He was second at the Hungaroring and won the season-ending Circuit de Spa-Francorchamps race for fourth outright with 17 points.