Automakers are worried that President Trump’s tariffs on imported cars and auto parts will soon increase their costs and start eating into profits.

But at least one business in the auto industry thinks the tariffs could give it a lift. That company is Carvana, an online retailer of used cars that has gained fame for storing vehicles in distinctive “vending machine” towers.

The Trump tariffs, which include levies of 25 percent on vehicles made in Mexico, Canada, Germany and many other nations, are widely expected to raise the prices new cars and trucks, forcing more car shoppers to opt for a used vehicle. An agreement to lower tariffs on Chinese imports that the administration announced on Monday will not change the tariffs on cars and auto parts.

“To the extent that car prices go up, Carvana is probably positioned to be relatively advantaged as consumers look for high-quality cars at a lower price,” the company’s founder and chief executive, Ernie Garcia, said in an interview last week. “We think that will cause them to shift into used vehicles and into the savings that are available via online buying.”

Mr. Trump has said he imposed tariffs in hopes of forcing manufacturers to make more goods and create more factory jobs in the United States, although he has also claimed that tariffs would help achieve other goals like reducing unauthorized immigration and drug smuggling.

Automakers are bracing for the impact.

In the past several days, General Motors said the tariffs would increase its costs by $2.8 billion to $3.5 billion this year, even accounting for measures the company is taking to adapt. Ford Motor, which makes more vehicles domestically than G.M., estimated the tariffs would cost it $1.5 billion on a net basis. Toyota Motor, which imports many vehicles from its home country of Japan, said the tariffs would cost it $1.3 billion in March and April alone.