As President Trump continues to threaten tariffs to protect American industry, a motoring expert has warned it will not boost sales of US cars in the UK.

Proposed 25% U.S. tariffs on Canada and Mexico could lead to a sharp increase in vehicle prices, auto industry executives and analysts say.

President Donald Trump’s move to impose 10% additional tariffs on imports from China this week affects a small number of U.S. vehicles.

Ford Motor Co (NYSE: F) chief executive Jim Farley is concerned that President Trump’s planned tariffs could do more harm than good to the US automotive industry. Raising tariffs against China, Mexico,