In My Summer Car, players start with hundreds of loose parts to assemble their own car and engine, while also managing their character's needs such as food, drink, and sleep. The game emphasizes a meticulous approach to car building and maintenance, requiring players to engage in various tasks to keep both their vehicle and themselves in good condition.

The storyline of My Summer Car revolves around a young man spending his summer in 1990s Finland, engaging in various activities, including car racing and completing odd jobs to fund his automotive endeavors. Players can explore the countryside while participating in rally events and navigating the challenges of rural life.

My Summer Car stands out with its detailed car assembly mechanics, realistic driving simulation, and the inclusion of permadeath, which adds a layer of challenge and immersion. The game also features a variety of vehicles, a vast open world, and a nostalgic 90s Finnish summer atmosphere, making it a unique experience for players.