GP2 racer Daniel de Jong will make a handful of starts in Auto GP this year, racing a third car for MP Motorsport.
De Jong finished fifth in Auto GP last year with the Dutch team, and also made eight starts in GP2 for Rapax.
The 20-year-old has moved across full-time to GP2 with MP, which has taken over Coloni's entry in the series for 2013.
But he will also make a few Auto GP starts for the team, where he will join full-time drivers Riccardo Agostini and Meindert van Buuren.
Auto GP series boss Enzo Coloni said: "MP motorsport is the first team to announce a three-car line-up for the 2013 season.
"The presence of Daniel de Jong offers our series and drivers a chance to race against a GP2 contender, increasing the general level of competition."