WASHINGTON, April 2 (Reuters) - U.S. President Donald

Trump's 25% auto tariffs will cover nearly $600 billion worth of

vehicles and auto parts imports annually and extend to all

computer imports into the U.S. - including laptops - according

to a Reuters analysis of tariff codes included in a federal

register notice on Wednesday.

The update of Trump's auto tariff proclamation from last week

included nearly 150 auto parts categories that will face tariffs

starting on May 3, a month after Thursday's midnight activation

of 25% tariffs on vehicle imports.

The list includes tariff codes for engines, transmissions,

lithium-ion batteries and other major components, along with

less expensive parts including tires, shock absorbers, spark

plug wires and brake hoses.

But a major surprise was the inclusion of the four-digit

tariff code covering all computers, which are among the biggest

global import categories into the U.S. at $138.5 billion in

2024, according to U.S. Census Bureau data.

The parts list, along with the May 3 timing for tariffs on those

imports, was disclosed just before Trump announced a baseline

10% tariff for all U.S. imports, with many countries slapped

with higher reciprocal duties meant to counteract non-tariff

trade barriers.

Senior Trump administration officials said autos and auto

parts subject to the Section 232 national security tariffs would

not also be charged the separate baseline or reciprocal tariffs.

In other words, the auto tariffs do not stack on top of the new

reciprocal tariffs, which start on April 5.

More parts could be added to the tariff list, as the White

House directed the Commerce Department to establish a process

within 90 days for domestic producers to request that other

parts imports be targeted.

The notice said that for vehicles qualifying under the

U.S.-Mexico-Canada Agreement's rules of origin, importers can

pay the 25% duty on only the non-U.S. content of the order.