Germany’s automaker BMW AG said on Friday it was the biggest U.S. automotive exporter by value for the fifth consecutive year, with exports totaling over $8.4 billion in 2018.

The company said it exported 234,689 units of its X model sport utility vehicles and coupes from its Spartanburg, S.C., plant during 2018.

BMW’s U.S. export report comes at a time when President Donald Trump has threatened to saddle imported cars and auto parts with steep tariffs of up to 25 percent.

Automakers, however, warn that such tariff on imported cars and parts would add thousands of dollars to vehicle costs and potentially devastate the U.S. economy as auto companies cut jobs to maintain profits.