President Donald Trump’s auto tariffs, which went into effect at 12:01 am ET on Thursday, have the potential to upend a crucial American industry and raise the cost of tens of millions of cars sold every year across the country.

Analysts estimate President Trump’s auto tariffs could raise the cost of a vehicle by thousands of dollars. Ballpark calculations based on current monthly auto-loan payments and an average American’s income show how that would test U.

U.S. President Donald Trump's 25% tariff on auto imports may cost American consumers more than $30 billion in higher vehicle prices and reduced car sales in the first full year, consultancy firm Anderson Economic Group said in a report on Thursday.

One manufacturer told NBC News that she had managed to push the existing 45% duty on her products onto American customers.

(Reuters) - U.S. President Donald Trump's 25% tariff on auto imports may cost American consumers more than $30 billion in higher vehicle prices and reduced car sales in the first full year, consultancy firm Anderson Economic Group said in a report on Thursday.

President Donald Trump announced last week that he will impose a 25% tariff on imported passenger vehicles, light trucks and some auto parts. After signing the order last week, Trump said the auto tariff would go into effect on Wednesday, April 2 and begin to be collected on Thursday, April 3.

Stellantis ( STLA ), the company behind Fiat and Chrysler, will pause production at plants in Mexico and Canada and assess the tariffs, according to CNBC, which reported that 900 "US-represented employees" would be temporarily laid off. Its shares were recently down more than 5%. (Read Investopedia's coverage of today's markets here .)

Stellantis has responded to the imposition of a 25% auto tariff with the temporary layoff of thousands of Unifor Local 444 members at Windsor Assembly Plant and additional layoffs in Mexico and at U.S.