Formula Renault 3.5 team Zeta Corse has apologised to its drivers after a troublesome event at Paul Ricard last weekend.
While the team scored points in both races with Will Buller, Red Bull racer Carlos Sainz Jr suffered a suspension failure at the end of the first race and failed to start race two due to throttle problems.
"We are very disappointed with the outcome of the Paul Ricard weekend and not only because we did not achieve the results we hoped for," said team boss Claudio Corradini.
"We suffered from many problems that culminated with Carlos being forced to sit out race two.
"Despite the fact that the technical issue that stopped Carlos was not something predictable by the team, it is true that the problems suffered by him in Q2 and race one could have been managed in a better way by our team.
"Therefore we want to apologise to Sainz and his partner Red Bull for a weekend that turned out to be very complicated."
Corradini said the team also owed Buller an apology, as he could have scored better results than his two eighth places if Zeta had done a better job.
"Our set-up choice for Buller was not perfect for race one either, so we also apologise to him and his sponsors," he said.
"Although we had prepared all the possible set-up combinations needed to be competitive, we probably exaggerated as some of the solutions turned out to be too risky.
"We are now completely focused on getting well-prepared for the next round at Barcelona, where we want to end our season on a high note."