Cars are important but far from the only thing Germany exports (machinery, chemicals):
https://www.deutschland.de/en/topic/business/germany-in-world-trade-most-important-facts-about-imports-and-exports

Going through the list quite a big chunk of trade happens with non-EU partners, moat notably US and China bit really from all over the non-EU world https://www.destatis.de/EN/Themes/Economy/Foreign-Trade/Tables/order-rank-germany-trading-partners.pdf?__blob=publicationFile