Ferrari admits the decision to use this year's Formula 1 cars again in 2021 was "responsible" but not ideal for the team.

As the sport faces a large financial hit from the coronavirus pandemic, it was agreed to postpone the new technical regulations, initially set for next season, until 2022, though Red Bull boss Christian Horner said on Tuesday that could be pushed back further to 2023.

Ferrari, however, was the only team initially against the idea before later dropping their opposition, and at least some of that is because of concerns over the competitive of the SF1000 chassis. 

"Considering the current baseline and the feedback from the tests, we don't think we have an advantage with this choice," team boss Mattia Binotto told Sky Italia.

"It wasn't an easy decision, but it had to be made. It is a special moment, and it was important to give a responsible signal for the future."

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The limits on development that will be allowed are still to be decided, with some pushing for a freeze on gearboxes and suspensions to be included.

"The regulations [for 2021] remain the same, but there will still be room for aerodynamic development. We have yet to define that in detail," Binotto continued.

"We are discussing it with all the representatives of the teams and with the FIA, to understand what will be frozen and what will be open to development.

"But we aim to maintain the DNA of Formula 1, which remains competition and comparison."