Guenther Steiner is expecting 2021 to be another "difficult" campaign for Haas after the team endured its worst season in Formula 1 this year.
Following a stunning high of finishing fifth in the constructors' championship in its third year in the sport in 2017, Haas has slumped to ninth the past two seasons, scoring a miserable three points throughout 2020.
The team now heads into its seventh season knowing its car will predominantly be a carryover from this year after F1 pushed back new aerodynamic regulations to 2022 due to the effects of the Covid-19 pandemic.
Steiner warned: “I know it will be another difficult one, it’s just how difficult it is. That I don’t know yet.
"This is what we need to find out and need to work on that, when we find out, what we can do about it.
"But there are a lot of factors which I have no influence on. They are out of my control and the factors we speak about here, I hope they get better."
For 2021, Haas will run an all-new line-up of rookie drivers Mick Schumacher and Nikita Mazepin after deciding not to retain the partnership of Kevin Magnussen and Romain Grosjean for a fifth year.
While accepting Haas has plenty of work to do to improve, Steiner hopes Ferrari will deliver on its promises of a stronger power unit for the coming season after its less than impressive offering in 2020.
“Obviously, we need some work on our side, a lot of work, and we will be pushing and doing our best in the short time we have got," added Steiner.
"But that is the only thing I can do at the moment and hopefully someone else adds something to the party as well.”
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