Beijing said Thursday it "firmly opposes any coercion" after President Claudia Sheinbaum announced higher duties on countries with which Mexico has no trade agreements, including a 50 percent tariff on car imports from China -- up from 15-20 percent.

"These are not coercive measures and they are not against China... they are not against any country in particular," Sheinbaum told reporters, adding there would be talks with Beijing next week.

US President Donald Trump has repeatedly urged trading partners to increase duties on China.

The White House has said Chinese producers are abusing a free-trade deal between the United States, Mexico and Canada to send goods northward via Mexico, tariff-free.

Mexico replaced China in 2023 as the United States' largest trading partner, with the Latin American country's northern neighbor buying more than 80 percent of its exports.

Sheinbaum insisted Mexico's new tariffs were aimed at boosting domestic production, and denied the move had anything to do with pressure from Washington.

Mexico, she added, wants to "continue having a very good relationship" with China.

Sheinbaum has so far managed to stave off a blanket 30 percent US import tariff, though Mexico's automotive, steel and aluminum sectors -- like those of other countries -- have been hit with higher levies.

Three out of every 10 light vehicles sold in Mexico are Chinese, according to official data.

Other countries affected by Mexico's tariff rise include South Korea, India, Indonesia, Russia, Thailand, and Turkey.

Sheinbaum's ruling party holds a majority in Congress, and a bill containing the proposed tariff rise is likely to pass.