Sirotkin qualified 19th for his first Grand Prix in Australia, but his first F1 race was ended shortly after a sandwich bag got into his Williams car brake system. For the next two races (Bahrain and China) he out-qualified Stroll, but finished just behind him in fifteenth place. He made it into the second qualifying segment for the first time at Baku, qualifying 12th, but his race was ended on the first lap after he was squeezed between Nico Hülkenberg and Fernando Alonso's cars and his car suffered front-left suspension damage. Prior to the accident he also collided with Sergio Pérez which led to the three-place grid penalty on the start of the Spanish Grand Prix. In Spain Sirotkin qualified ahead of Stroll, but lost his place on the grid to him after the penalty was applied. He had a seat problem during the race and was the last driver to cross the finish line. He again out-qualified Stroll at Monaco. Sirotkin passed Stoffel Vandoorne on the first lap but his race was ruined after the mechanics were not able to fit the tyres in time for the 3-minute signal prior start of the race. He received a 10-second stop-and-go penalty for this, finishing the race second last, ahead of Stroll.