Mercedes are the reigning World Constructors' Champions, meaning they are the team to beat in 2021. Having built a car which is fast in almost all areas of the track, other teams will be looking to knock them off their perch.
Historic Ferrari are the most successful Formula 1 constructor ever with 16 titles to their name. However, their last title came in 2008 and their passionate fans around the world are hoping to win that title again.
Despite winning 4 World Constructors' Championships in a row between 2010 and 2013, Red Bull have not been able to repeat that same success and are up their with Ferrari as being the most credible threats to Mercedes dominance.
Alpine, formerly Renault, took a step-back in results last year, and with former champion Fernando Alonso returning to the team, they're looking to improve quickly.
The British constructor, who now rely on Mercedes for their engines will be building on the previous season where they out-matched expectations considerably.
Based in the United States, Haas are the newest constructor to enter Formula 1 and came into this season with two rookies, a rare event.
The former Racing Point team have been rebranded to Aston Martin and feature veteran Sebastian Vettel as one of their drivers this year.
Despite being the second-most successful F1 team after Ferrari (with 9 titles to their name), they have been slipping backwards and are bringing up the rear of the pack nowadays.
AlphaTauri (formerly Toro Rosso) is the sister-team of Red Bull and is tradionally used to develop drivers before promoting them into the main team.
Formerly Sauber, the Alfa Romeo team use their close ties with Ferrari to help develop their drivers. Kimi Räikkönen, who was previously at Ferrari, is in his second season with the team.