South American Formula 3 race-winner Felipe Guimaraes will make his A1GP debut for Team Brazil in Mexico next weekend.
The 16-year-old former karter will gain experience running in the free practice sessions for the team, while US single-seater racer Bruno Junqueira will continue his role of lead driver in qualifying and the two races.
"It will be a very good experience for me, I am very happy about this test and to work with [team manager] Emerson Fittipaldi," said Guimaraes. "I hope to learn a lot. I will give my best, to learn everything as quickly as possible, and to have a good performance on track."
Junqueira, who endured several offs on his A1GP comeback at Durban last weekend before finally scoring some points in the feature race, is looking forward to a better weekend at Monterrey, where he has previous experience from his Champ Car days.
"I know the track at Mexico City really well and have had some good results there so I am definitely looking forward to racing there again with A1GP," he said. "Last year we qualified well there and we showed how competitive we are this year at the last race in Durban.
"The team and car is much better but unfortunately in Durban the races did not go well although we showed our speed. We are competitive now and we should be aiming for podium finishes in Mexico."
Fittipaldi added: "Last year Bruno qualified well in Mexico [seventh] and our car was not as competitive as it is now. We have improved the set-up and the team a lot since then, and Bruno demonstrated in Durban that we have the capability to be running right at the front - he qualified just 0.018s behind the polesitter. He knows the track very well and I am confident that we can fight for the win."