​The United States has a history of imposing tariffs on the automotive industry, with varying outcomes. Notable instances include:​

1. Smoot-Hawley Tariff Act (1930): Enacted during the onset of the Great Depression, this act raised U.S. tariffs on over 20,000 imported goods, including automobiles. The goal was to protect domestic industries, but it led to international retaliation and a significant reduction in global trade, exacerbating the economic downturn. U.S. imports decreased by 66%, and exports fell by 61% between 1929 and 1933. Unemployment rose sharply during this period, highlighting the detrimental impact of such protectionist measures. ​Wikipedia

2. Voluntary Export Restraints (1981): In the early 1980s, facing competition from Japanese automakers, the U.S. negotiated voluntary export restraints (VERs) with Japan, limiting the number of cars Japan could export to the U.S. While this protected domestic manufacturers temporarily, it led Japanese companies to establish production facilities in the U.S., mitigating the intended protective effects.​

3. Tariffs on Japanese Luxury Cars (1995): The U.S. threatened to impose 100% tariffs on Japanese luxury cars due to trade disputes. However, an agreement was reached before the tariffs took effect, avoiding potential negative consequences for both economies.​

4. Steel and Aluminum Tariffs (2018): Although not directly targeting automobiles, the 25% tariff on steel and 10% on aluminum imposed by the Trump administration affected auto manufacturing costs. Domestic automakers faced higher production expenses, leading to increased vehicle prices and potential job impacts.​

5. Proposed Auto Tariffs (2019): The Trump administration considered imposing tariffs of up to 25% on imported vehicles and parts, citing national security concerns. Studies indicated that such tariffs could increase vehicle prices by thousands of dollars, reduce sales, and lead to significant job losses in the auto industry. However, these tariffs were not implemented.​

6. Recent 25% Auto Tariffs (2025): In March 2025, President Trump announced a 25% tariff on auto imports. Analysts predict this could increase car prices by $5,000 to $15,000, reduce competition, and potentially decrease car sales and production. While aiming to boost domestic manufacturing, there are concerns about negative impacts on consumers and potential violations of trade agreements like the United States-Mexico-Canada Agreement (USMCA). ​The Guardian

Historically, U.S. automotive tariffs have aimed to protect domestic industries but often resulted in unintended consequences, including higher consumer prices, strained international relations, and retaliatory measures affecting various sectors of the economy.