"It was a very disappointing race," Stiener said. "Kevin (Magnussen) started off running pretty well, but then it all went wrong when he locked up. The car was just difficult to drive. A hydraulic issue then meant we had to retire the car.
"Romain (Grosjean), it looked like he was hit at turn one, his car was out of balance after that. We'll need to see what happened, but the car was just slow, there must have been something wrong with it. He couldn't drive it. He tried to get the balance back on the pit stop, but it was not possible.
"We were slow. It's a disappointing weekend for the whole team. We just need to regroup and keep on going until we find a solution to our lack of performance."
Haas will hope to show some signs of improvement soon and will hope that their 2020 car is more competitive than this year.