When German voters go to the polls Sunday, the country’s moribund economy — and promises to fix it — will be front of mind. But Donald Trump’s looming import tariffs will make that daunting task even harder for the new government.

Volkswagen's Audi will expand output in North America and Mercedes will boost its U.S. production as Europe's carmakers try to protect themselves against U.S. President Donald Trump's tariff threats.

President Trump hasn't implemented most of the tariffs he's announced, but the uncertainty over when — or even if — he'll do so is already hurting the auto industry. Why it matters: It's a tumultuous time for automakers,