Alexander Rossi will make his IndyCar Series debut with Andretti Autosport.

Rossi, who will make the transition from Formula 1 having failed to secure a seat with Manor, which opted for Rio Haryanto, or Haas, will pilot the No. 98 Honda.

The youngster makes his transition to IndyCar official with a rookie test day on March 1 at Sebring International Raceway.

"I'm very much looking forward to making my IndyCar Series debut this season and am proud to be racing with a team of such high calibre and pedigree as that of Andretti Autosport," said Rossi. "As a racer through and through, I cannot wait to get started; our goal is to be competitive immediately at the first race in St. Petersburg."

"We're really excited to have Alexander join the team," said Andretti Autosport CEO Michael Andretti. "His credentials speak for his ability and we're confident he'll transition seamlessly into IndyCar racing. It's neat to have the last three American F1 drivers in 25 years to be under one roof, I think it speaks to the level of talent we have."

Andretti along with Rossi and Scott Speed, who currently competes for Andretti’s Global Rallycross team, make up the last three American-born drivers to compete in Formula 1.