According to Trump, tariffs will be increased to 25 percent from the current roughly 15 percent.
According to Trump, the reason is that "the European Union is not following our fully agreed trade agreement."
It is unclear what the president means by the EU violating the agreement.
The European Parliament approved the trade agreement with the US on March 26, after having delayed it following Trump's threat to take over Greenland.
According to the agreement, in addition to setting tariffs, the EU will increase investments across the Atlantic.
Reduce tensions
The agreement has still not been finally ratified at the EU summit level. Negotiations are underway to align the Council of Ministers' position with that of the Parliament, and the next meeting is scheduled for 6 May.
Benjamin Dousa (M) writes to TT that the government is working to reduce tensions.
"The EU needs to quickly fulfill our part, and so does the US. We do not want new trade conflicts, especially when they risk affecting an important Swedish export industry such as vehicles," he writes.
After March 26, several European decision-makers, including the President of the European Parliament, Roberta Metsola, said time will tell whether the United States can be trusted.
Trump also emphasizes in his post on Truth Social that cars and trucks produced in American factories are not subject to tariffs.
Stellantis slides
Trump then writes that over $100 billion has been invested by foreign companies in automotive factories in the United States and that they will soon create many jobs in the country.
BMW, Mercedes-Benz, Volkswagen, Volvo Cars and Volvo Trucks, among others, have factories in the United States.
It's worse for the automotive group Stellantis, which imports Alfa Romeo, Fiat and Maserati models to the US from Europe.
Stellantis' shares on the New York Stock Exchange fell after Trump's announcement and an hour later were down 2.3 percent for the day.
