The National Highway Traffic Safety Administration says it has “significant safety concerns” over Ford's proposed fix for the problem.

Highway safety regulators say automaker's remedy for a fuel injector recall does not actually fix the problem.

The US National Highway Traffic Safety Administration is demanding information from Ford as it investigates the fix in a March 8 recall of nearly 43,000 Bronco Sport SUVs from the 2022 and 2023 model years,