Drivers may opt for two-stop strategies on Sunday to avoid the hard compound tyres which, in the words of one racer "deserve no place on a Formula 1 car".
Romain Grosjean couldn't explain Haas's form after setting the fifth-fastest time on Friday, but McLaren's Lando Norris wasn't as surprised by their performance.
Mercedes team principal Toto Wolff says F1 is banning engine 'quali modes' to "pull back the leaders" but his team will find more performance in race trim.
Ferrari team principal Mattia Binotto says the team has appealed against the FIA stewards' verdict on Racing Point to gain "clarity and transparency" over the protection of intellectual property in F1.
Carlos Sainz Jnr says McLaren still haven't solved his car's cooling problem and are "running out of things to try" after giving him a new chassis for this weekend's race.
Can Max Verstappen spring another surprise on the Mercedes drivers this weekend? Enter your predictions to win F1 2020: Michael Schumacher edition.
Lewis Hamilton and Valtteri Bottas formed the usual Mercedes one-two in second practice, and were followed by drivers from six different teams.
Sergio Perez's trip to Mexico after the Hungarian Grand Prix was not the source of his Covid-19 infection, according to his team's CEO Otmar Szafnauer.
Pictures from the first day of practice for the 2020 Spanish Grand Prix.
Follow the 2020 Spanish Grand Prix second practice session on RaceFans Live.
"People that know me know I enjoy historic racing and I'd invite Otmar to come join me because he's got a historic car that he's currently racing."
Renault managing director Cyril Abiteboul says Racing Point should be stripped of all the points they scored in the races where his team protested them.
McLaren will continue to seek a resolution over a loophole which could hand Racing Point and other teams an advantage in the 2021 F1 season, despite the FIA stating the rule in question will not be withdrawn.
Valtteri Bottas narrowly beat team mate Lewis Hamilton to the fastest time as practice began for the Spanish Grand Prix at the Circuit de Catalunya.
Follow the 2020 Spanish Grand Prix first practice session on RaceFans Live.
Mercedes has worked "flat chat" on the blistering problems which cost it victory in Silverstone last week, but the team's drivers say they can't rule out the possibility of a repeat this weekend.
Lewis Hamilton says his push to improve diversity in the sport is more important to him than whether he equals Michael Schumacher's record of seven world championship victories.
In the round-up: Watching F1 in quarantine was "very boring" - Perez • Alonso crashes in Indy 500 practice • Massa leaves Formula E immediately after season ends
Pictures from the build-up to the 2020 Spanish Grand Prix.
The Spanish Grand Prix is taking place three months earlier than usual. Conditions will therefore be hotter, and driver expect track temperatures as high as 50C.