Canadian Prime Minister Mark Carney says the "old relationship" between Canada and the United States is "over," following President Donald Trump's announcement of a 25 per cent tariff on car imports from early April.
"I reject any attempts to weaken Canada," Carney said during a news conference in Ottawa on Thursday.
"The old relationship we had with the United States based on deepening integration of our economies and tight security and military co-operation is over."
Carney said he had not yet determined what actions Canada might take and added he would respond next week, when the auto tariffs and a separate set of reciprocal tariffs on US trading partners are due to take effect on April 2.
"We will fight the US tariffs with retaliatory trade actions of our own that will have maximum impact in the United States and minimum impacts here in Canada," he said.
The tariffs could add thousands of dollars to the cost of an average vehicle in the United States, contradicting Trump's campaign promise to lower consumer prices. Ferrari announced price hikes of up to 10 per cent for cars sold in the US, and other automakers also warned they might raise prices as well. Dealers raised fears of job losses.
The S&P 500 ended lower on Thursday, with auto stocks falling. General Motors tumbled over seven per cent and Ford slid 3.9 per cent. Car parts manufacturers Aptiv and BorgWarner each lost around five per cent.
Tesla edged up 0.4 per cent, with investors betting the electric vehicle maker will be hurt less by tariffs because of its largely domestic production.
The tariffs are a sucker punch for some of the United States' most important allies and would come atop other trade penalties Trump has already put in place. Mexico, Japan, South Korea, Canada and Germany are the biggest suppliers of automotive imports to the United States that were worth $US474 billion ($A752 billion) in 2024.
Carney said Canada would transform its economy to become less dependent on its southern neighbour, which has long been a close ally and important trading partner.
"We will need to reduce our reliance on the United States," he said at the press conference.
That may prove difficult. Vehicles are the second-largest Canadian export by value at $US51 billion in 2023 - of which 93 per cent was exported to the United States.
With billions of euros wiped from German auto shares on Thursday, officials in Europe's biggest economy called for a tough response.
"The US has chosen a path at whose end lie only losers, since tariffs and isolation hurt prosperity for everyone," outgoing German Chancellor Olaf Scholz said.
In neighbouring France, Finance Minister Eric Lombard called Trump's plan "very bad news," and said the only solution was for the EU to raise its tariffs.
Britain, which has struggled to expand its economy, was scrambling to secure an exemption but also threatened to review subsidies given to Tesla, which is headed by top Trump adviser Elon Musk.
The company, which faces declining sales, increased competition and a political backlash, is less exposed to Trump's tariffs than its rivals, but Musk said on X that the impact is "still significant."
China's foreign ministry said the US approach undermines the multilateral trade system and was "not conducive to solving its own problems."
With shares falling, Japanese Prime Minister Shigeru Ishiba said Tokyo will put "all options on the table" and South Korea said it would put in place an emergency response by April.
Trump sees tariffs as a tool to raise revenue to offset his promised tax cuts and to revive a long-declining US industrial base. Many trade experts, however, expect prices to initially rise and demand to fall, hurting a global auto industry that is already reeling from uncertainty caused by Trump's rapid-fire tariff threats and occasional reversals.
Trump said he might hit the EU and Canada with larger tariffs if they teamed up to retaliate.
with DPA
