Prices are going to shoot up now,” one shopper said. But some dealers said that economic concerns might be keeping people away.

Americans love used cars, and may be about to love them even more. It is hard to pin down how much President Trump’s 25% tariff on automotive imports will push up prices of new models, because of unknowns regarding implementation,

Analysts say brands such as Lexus, Toyota, Honda and Subaru are likely to be among the first to face higher costs.