Sebastien Bourdais' stint with Toro Rosso is over, according to teammate Jaime Alguersuari.

Bourdais' future with the team was under scrutiny at the German Grand Prix, where the Frenchman retired due to a car problem.

"He's a very good driver," said Alguersuari, a 19-year-old Spanish reserve driver. "But it looks like this year he hasn't given it his all like he's supposed to give. I sincerely believe that Red Bull's decision is just, but it's never good to see someone taken off the team halfway through the season."

Spanish media reported that Alguersuari, who was promoted to reserve driver in time for the German race, would replace Bourdais at the Hungarian GP on July 26.

Toro Rosso would not comment on the decision. Bourdais said the team hadn't discussed the issue with him over the weekend.