Formula One: Magnussen wins engine update coin toss with Grosjean

PIC: Haas F1's Danish driver Kevin Magnussen signs autographs for fans at the Circuit de Catalunya on May 11, 2017 in Montmelo on the outskirts of Barcelona ahead of the Spanish Formula One Grand Prix.(AFP)

Kevin Magnussen won a coin toss with his Haas team-mate Romain Grosjean on Thursday to be the first driver to have the team's upgrades on his car at this weekend's Spanish Grand Prix.

The young Dane will have the new parts fitted for Friday's two practice sessions while Frenchman Grosjean will have to wait until Saturday's third free session.

The Haas team has a new ‘floor' to introduce. Team boss Gunther Steiner said that unexpected "production delays" at chassis partner Dallara had created the need for the coin toss.

"Unfortunately I won't have it until Saturday and that's not ideal," said Grosjean. "There's only one available right now and I didn't get it. It was a coin toss - I've never been lucky with that.

"It's not ideal because it's a big change of a lot of things on the car and I don't know what it's going to be like for us. The problem is you need to set up the car around the new package."

Steiner said: "It should have been both cars, but the second one was late, so at that stage we had to make a choice and this was the only fair way."