White House issued fact sheet on imposing 25% tariffs under Trade expansion act.
Aim is to minimize the threat to US national security posed by importation of autos.
Tariff Application
25% tariff applies to imported passenger vehicles such as sedans, SUVs, and minivans.
Also applies to key automobile parts such as engines, transmissions, powertrain parts.
Tariffs may be expanded to be imposed upon additional parts if deemed necessary.
USMCA auto importers can certify US content, tariff apply to value of non-US content.
Automobile parts that are USMCA compliant will not be subject to imposition of the 25% tariff until a process is developed to apply the tariff to their non-US content.
New tariffs are designed to ensure that the US can sustain its domestic industrial base.
Protection and strengthening of the US automotive sector, addressing stagnation of US auto industry while foreign automobile industries have expanded, is another tariff goal.
Apr. 2025 White House Federal Register
On Apr. 3, 2025, White House published Proclamation 10908 in the federal register.
On Apr. 29, 2025, White House issued proclamation, Amendments to adjusting imports of automobiles and automobile parts into the US; issued fact sheet on proclamation.
Offset to portion of tariffs for automobile parts used in US-assembled vehicles equal to 3.75% of manufacturer’s suggested retail price (MSRP) of US production for next year.
Then equal to 2.5% of US production the year after (May 1, 2026 to Apr. 30, 2027).
Percentages reflect duty owed when 25% duty applied to 15% of value of US-assembled automobile in 1st year, 10% value of US-assembled automobile in 2nd year.
All other automobile imports will still be subject to the 25% tariff; proclamation sets strict penalties for importers who claim tariff reduction in excess of approved amounts.
In Apr. 2025, White House ordered removal of some cumulative tariffs, see #252883.
In May 2025, Senate sent letter damning tariff effect on housing crisis, see #253189.
May 2025 White House Federal Register
On May 2, 2025, White House published Proclamation 10925 in the federal register.
Oct. 2025 White House Proclamation, Fact Sheet
On Oct. 17, 2025, White House issued proclamation and fact sheet announcing tariffs on imports of medium and heavy-duty vehicles (MHDVs), parts (MHDVPs), and buses.
25% tariff on medium- and heavy-duty trucks and truck parts, class 3 to class 8.
Preferential treatment will be given to vehicles that qualify under the USMCA so that the tariff will apply only to the value of the non-US content of qualifying vehicles.
Tariff to apply to MHDVPs that are key parts, including engines, transmissions, tires.
10% tariff on imports of buses, including school buses, transit buses, motor coaches.
Offset to tariffs for truck parts assembled in US equal to 3.75% of of aggregate value of all trucks assembled in the US from 2025-2030, applies to Section 232 part tariffs.
3.75% reflects the duty that would be owed when a 25% tariff is applied to 15% of the value of a US-assembled medium- and heavy-duty truck, truck engine offsets coming.
Import adjustment offset program for auto manufacturers is extended through 2030.
The tariffs shall apply to goods entered for consumption or withdrawn from warehouse for consumption on or after 12:01 a.m. eastern daylight time on Nov. 1, 2025.
Oct. 22, 2025 White House Fed Reg
On Oct. 22, 2025, White HouseProclamation 10984 published in Federal Register.
