Indycar pitstops often seem slower than F1 pitstops due to a variety of factors. Firstly, the refuelling process included in Indycar pitstops adds extra time. Furthermore, the mechanics in Indycar use hand-held pneumatic jacks, rather than the built-in hydraulic jacks used in F1, which also adds a few crucial seconds. Additionally, IndyCar teams are made up of fewer crew members, which can slow down the process. Lastly, the design of the cars themselves, including tire sizes and lug nuts, can also contribute to the longer pitstop times in Indycar.