There is no single tariff-only increase that applies to every new car or truck. A 2025 Resources for the Future model estimated about $3,500 per vehicle under one specified tariff scenario; a 2026 Cox Automotive/Kelley Blue Book analysis estimated different increases for imported and U.S.-assembled vehicles. Those are estimates with different methods and comparison periods—not a universal surcharge or a clean measure of what tariffs alone added to each buyer’s bill.
What do the estimates say?
The figures below answer different questions. The Resources for the Future (RFF) number is a modelled result under stated assumptions. Cox Automotive/Kelley Blue Book (Cox/KBB) reported model-year comparisons and industry estimates. The transaction-price figures describe what buyers paid across the market, not the tariff component.
| Source and period | Reported figure | What it measures |
|---|---|---|
| Resources for the Future, 2025 | About $3,500 per vehicle | RFF’s modelled average increase in its specified scenario applying a 25% tariff to vehicles and parts produced outside North America. It is not a measured increase on every vehicle sold. |
| Cox/Kelley Blue Book, March 2026 | $5,000–$8,900 for imported vehicles; $1,600–$2,000 for U.S.-assembled vehicles | Cox/KBB’s estimates comparing 2026 with 2025 model-year vehicles over a 37-week window. They are not a like-for-like tariff-only accounting for every model. |
| Cox/Kelley Blue Book, July 2025 | $48,841 average transaction price, up 1.5% year over year | Market-wide average amount paid. Incentive spending was 7.3% of transaction price, illustrating why sticker prices and buyer prices can diverge. |
| Cox/Kelley Blue Book, September 2025 | Average transaction price above $50,000; average MSRP of $52,183, up 4.2% year over year | Market-wide figures. Cox said the September transaction-price record was mostly driven by a richer mix of luxury vehicles and expensive EVs, while tariffs added cost pressure. |
The RFF scenario also estimated imports would fall by 1.3 million vehicles, domestic production would rise by 340,000, and total vehicle sales would decline by about 1 million. These are model outputs for that scenario, not observed outcomes.
Why can’t one number describe every vehicle?
Imported vehicles and U.S.-assembled vehicles face different exposure
The White House’s 2025 action established a 25% tariff framework for automobile imports and an import-adjustment offset for qualifying U.S.-assembled automobiles. The administration described the offset as 3.75% of aggregate MSRP for eligible U.S.-assembled output in the first specified period and 2.5% in the following period. These are policy calculations, not consumer rebates. The White House also said other automobile imports remained subject to the 25% tariff.
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Assembly location alone does not settle a vehicle’s exposure. A vehicle assembled in the United States can contain imported parts, and the White House’s offset example depends on U.S. or USMCA content. The U.S. International Trade Commission (USITC) explains that vehicles and parts from Canada or Mexico that qualify under USMCA rules of origin may receive different duty treatment from non-qualifying imports or imports from elsewhere.
List prices are not the same as what buyers pay
In its March 2026 analysis, Cox/KBB said consumers were paying 5.9% more while list prices rose 10.4% in the 37-week comparison of 2025 and 2026 model-year vehicles. It attributed the difference to dealers absorbing some increases through negotiation and competitive pressure. Incentives and discounts can similarly affect the final transaction price, so a change in MSRP does not translate dollar-for-dollar into a change in a buyer’s out-the-door price.
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The vehicles sold change the market average
An average can rise because buyers purchase a larger share of higher-priced vehicles, even if the price of a given model and trim has not risen by the same amount. Cox/KBB identified a stronger mix of luxury vehicles and expensive EVs as the main reason the September 2025 average transaction price set a record. That overall average is therefore not evidence that tariffs alone raised each vehicle’s price by the same percentage.
Costs and price changes can arrive at different times
Automakers, suppliers, and dealers may absorb costs initially, adjust list prices later, or change incentives. A 2026 New York Fed study of tariff-exposed consumer goods—not automobiles alone—estimated that about 26% of tariff increases passed through to consumer prices relative to less-exposed goods. The study attributed 64% of its estimated increase to direct effects and 36% to indirect effects, including domestic input costs and markups; it found that indirect effects can take nine to twelve months to work through supply chains. This is useful context for timing, not an automotive pass-through rate.
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Do tariffs affect U.S.-made cars and trucks?
They can. U.S. assembly does not mean that every part was made domestically or that the vehicle has no tariff exposure. Imported components, content rules, and eligibility for USMCA treatment all matter. Conversely, a vehicle assembled in Canada or Mexico is not necessarily treated the same as a non-qualifying import from outside North America. The USITC noted that the duration and economic effects of the measures on production, imports, exports, and sales were not yet evident at the time of its 2025 report.
Does the same answer apply to every truck?
No. “Truck” in everyday buying language can mean a light-duty pickup or SUV, while tariff rules distinguish legal vehicle categories. The USITC discusses light vehicles and light-vehicle parts separately from heavy trucks and buses. A rate or price estimate for passenger vehicles should not be assumed to apply to every heavy truck, bus, or related part; the specific tariff provision and vehicle classification determine the scope.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How should a buyer interpret a claimed tariff increase?
Before treating a headline number as the cost added to a particular vehicle, check what is being compared. A useful comparison needs the same model and trim, the same model year or a clearly stated year-over-year period, and a distinction between MSRP and transaction price. It should also identify whether the vehicle is imported or U.S.-assembled, whether relevant USMCA or domestic-content status is known, and whether incentives or dealer discounts are included. Finally, note whether the figure is a scenario model, an industry estimate, or an observed market average; those categories are not interchangeable.
The evidence supports the direction of the effect—tariffs added costs and put upward pressure on prices—but not a single tariff-only dollar amount for every new car and truck. RFF’s 2025 scenario estimate and Cox/KBB’s 2026 model-year estimates offer useful but different ways to gauge that pressure; market-wide averages also reflect incentives, negotiations, and which vehicles buyers chose.
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