The FIFA series of video games is developed using the Frostbite engine. The Frostbite engine is a game engine developed by DICE, a subsidiary of Electronic Arts (EA), which also produces the FIFA series.
Frostbite was first used in the FIFA series with FIFA 17, released in 2016. Prior to that, EA Sports used the Ignite engine for the FIFA series. Frostbite is known for its advanced graphics capabilities and ability to create immersive physical environments in the virtual world.
It's worth noting that the exact version of the Frostbite engine used could vary between different FIFA releases. Also, sometimes different engines may be used for different platforms (consoles, PC, mobile). For the most up-to-date information, it's recommended to check the latest official sources or announcements from EA.