The Williams FW42 is a Formula One racing car designed by Paddy Lowe for the ROKiT Williams Racing team, to compete in the 2019 FIA Formula One World Championship. The car made its debut at the 2019 Australian Grand Prix, driven by 2018 FIA Formula 2 Champion George Russell who made his Formula One début; and Robert Kubica, who returned for his first racing season in Formula One since 2010, after recovering from life-threatening injuries suffered in a rally car accident in early 2011.
Williams was forced to missed 2 days pre-season testing for the FW42. They were finally able to tested the Williams FW42 on the 3rd day with 23 laps in. During pre-season testing, it completed the least amount of laps out of any teams and were also the slowest car.
Throughout the season, the FW42 were constantly on the back of the grid in terms of qualifying and race pace. This also wasn't helped by the fact that Robert Kubica was constantly being outpaced by George Russell. Its first point though came at the 2019 German Grand Prix, with over 13 cars retiring, and with both Alfa Romeo drivers receiving 30 second penalties. This put Kubica at p10. However at Hungary, their were some progress as George Russell just missing out of Q2.