Having been overlooked for a Toro Rosso race seat Antonio Felix da Costa has been retained as a test and reserve driver by Red Bull Racing.
He will share duties with Sebastien Buemi, having stood in on occasion this year when the Swiss driver was on WEC duty.
“It’s great to be able to announce the signing of Sébastien and Antonio for 2014,” said Christian Horner. “Next year sees the biggest change to the Formula One regulations for some time and the return of multiple in-season tests. To therefore be able to call on two such capable drivers is of huge benefit to the team.
“In Sébastien we have a great resource, a driver with extensive grand prix experience and that will be invaluable. Antonio, on the other hand, is an up-and-coming talent with whom we already have a good working relationship. I’m sure that his contribution will be just as important during what is sure to be an intensely busy season.”