Jean-Eric Vergne will continue in Formula E for the Buenos Aires round, with IndyCar race winner Marco Andretti making his series debut alongside the ex-Formula 1 driver at Andretti Autosport.
Vergne started from pole on his FE debut in Punta del Este last month and fought for victory until he hit suspension problems with two laps to go, but would not be drawn on his series future afterwards.
The ex-Toro Rosso racer was subsequently announced as part of Ferrari's F1 test roster, and will also stay on with Andretti for the Argentina FE event on January 10.
His Buenos Aires team-mate Andretti also competes with his father Michael's team in IndyCar.
The younger Andretti is yet to drive the car that he will race in Argentina.
"I've been looking forward to the chance to get behind the wheel of a Formula E car," said the 27-year-old.
"Having never been in the car, it's a bit of an unfamiliar situation for me but the team's pace looks solid enough for a great result.
"I like unknown situations; I'm up for the task."
Andretti will be the fifth driver to race with the team in FE this season.
The Andretti roster has included Vergne, Charles Pic, Matthew Brabham and Franck Montagny, who has not raced for the squad since testing positive for a derivative of cocaine during the second round in Malaysia.
TUNG BACK TO CHINA RACING
Chinese driver Ho-Pin Tung will also compete in Buenos Aires after returning to the China Racing team. Tung, who raced in the first two events, will partner regular racer Nelson Piquet Jr.
Antonio Garcia had stood in for Tung in Punta del Este.