Team by team analysis of Sunday's US Formula One Grand Prix at the Circuit of the Americas.
Formula One starts a new season in Australia on March 15 with a number of changes to the rules and regulations, as well as new faces in the paddock. Check out what's different for 2015.
Brazilian Felipe Massa put Williams on top on the penultimate day of pre-season testing in Bahrain on Saturday while Red Bull's quadruple world champion Sebastian Vettel failed to complete a lap.
Mexican Esteban Gutierrez will race with Swiss-based Sauber for a second season next year with Russian teenager Sergey Sirotkin signed as test driver, the Formula One team announced on Saturday.
Formula One supremo Bernie Ecclestone has backed a clampdown on the use of team radio to help drivers, claiming it was his idea and suggesting more restrictions should be considered.
Australian Daniel Ricciardo won the Hungarian Formula One Grand Prix for Red Bull on Sunday.
Sahara India needs to pay back $5.3 billion, raised from millions of small investors through the sale of bonds ruled by the Supreme Court to be illegal, before founder Subrata Roy can be released.
Formula One has not had a woman driver start a race in nearly 40 years and Danica Patrick, who nearly tested for Honda in 2008, has been through the rumour mill many times already.
Formula One legend, Niki Lauda, thinks it's going to be a tighter fight between them, because the latter wants to make sure now he can beat the Briton.
Germany's Nico Rosberg took a controversial pole position at the Monaco Grand Prix on Saturday after an incident that denied unhappy Mercedes team mate and championship leader Lewis Hamilton the chance to beat him.
Formula One has lost another of its principals.
Red Bull designer Adrian Newey went back to his drawing board on Thursday after another nightmare day for the Formula One champions in pre-season testing in southern Spain.
Lewis Hamilton took his fourth pole position in a row for Mercedes on Saturday after a rain-hit qualifying session at the Belgian Formula One Grand Prix.