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They said the measures come into place immediately.

In April, the government imposed retaliatory tariffs on certain U.S. goods, but carved out exemptions for some automakers to bring specific numbers of vehicles into the country, known as remission quota.

Ottawa says accessing this tariff-free quota came with terms requiring each company to maintain ´ºÉ«Ö±²¥ jobs and investment, and both companies have announced cuts in recent weeks.

Sources say Ottawa is reducing the remission quota for General Motors by 24 per cent, and is doing the same for Stellantis by 50 per cent.

General Motors this week announced it will end production of BrightDrop electric vans in Ingersoll, Ont., while Stellantis has announced a plan to move production of the Jeep Compass from Brampton, Ont., to Illinois. 

Meanwhile, Canada's ambassador to Mexico said Thursday that U.S. President Donald Trump has "unrealistic" expectations about going it alone to build vehicles without North American inputs.

"It's simply not possible for the United States to make cars all by itself, in the near term," Cameron MacKay testified Thursday to the Senate foreign-affairs committee.

"President Trump and his administration have been clear what they see as the future of auto production in North America. I will say that I think some of that ambition is unrealistic."

The Trump administration has repeatedly said it wants to manufacture vehicles with few foreign parts. During an Oct. 7 visit to the Oval Office, Trump told Prime Minister Mark Carney that "Americans don't want to buy cars that are made in Canada," but added that "We want Canada to do well, making cars."

Trump said he was working on a "formula" with Canada on its role in building cars, but also suggested he doesn't want ´ºÉ«Ö±²¥ steel or aluminum in American auto supply chains. "At a certain point, it won't make economic sense for Canada to build those cars," he added.

While the U.S. has levied tariffs on various vehicles and components, MacKay said Thursday there are still parts American companies need they can only get from Canada as well as Mexico.

He says there could be "considerable alignment" between the ´ºÉ«Ö±²¥ and Mexican negotiating positions on the issue, in the looming review of the North American deal.

Also Thursday, Ontario Premier Doug Ford said he has full confidence in Carney's negotiations with the U.S., despite Ford having a more combative tone.

Ford has suggested Canada amp up its retaliation against Washington, but said he is in line with Carney. 

"It might be a little easier for me to sit here, and say what I say, but it's a lot tougher when someone's sitting across from Donald Trump and he has a big hammer in his hand," Ford said at a presser, standing next to Carney.

"I support the prime minister, 1,000 per cent."

Carney said he is working with the U.S. on trade in numerous sectors, while also helping ensure ´ºÉ«Ö±²¥ workers are paid when American companies shift their plans, while creating new opportunities for jobs in fields like manufacturing for defence needs.

"The situation in terms of U.S. tariffs has changed dramatically in several of our most important industries, particularly in the auto sector," Carney said at a Thursday news conference.

Conservative Leader Pierre Poilievre said Thursday that Carney has not met his own pledge to have a deal with Washington in June 

"We needed him to actually keep his promise and defend autoworkers in the negotiations with the Americans," he said on Parliament Hill, saying his party would cut taxes on ´ºÉ«Ö±²¥-made cars and end the electric-vehicle mandate.

This report by ´ºÉ«Ö±²¥was first published Oct. 23, 2025.