General Motors, the largest producer of cars in Mexico, won’t provide details on how it would react if President Trump imposes 25 percent tariffs from the two countries.

General Motors manufactured 22.3% of light vehicles in Mexico: it is the main automotive producer in the Mexican market

Restructuring charges led to a fourth-quarter net loss. The result marred what was a relatively strong year for the automaker.

North American car companies have operated across borders for three decades. Tariffs would raise prices and cost jobs in the short run, analysts say.

Around 90% of auto exports from both Mexico and Canada go to the U.S., according to the Mexican Automotive Manufacturers' Association (AMIA) and the Canadian Vehicle Manufacturers' Association. German automakers,

Trump has said he is considering imposing 25% tariffs on both countries by 1 February. He has previously tied the tariffs threat to ending illegal migration and drugs crossing into the US through its southern and northern borders.