The investigation is looking at vehicles that may have a “failure of connecting rod bearings leading to complete engine failure."

The National Highway Traffic Safety Administration is investigating concerns that engines on 1.4 million Honda and Acura vehicles might fail.

NHTSA is launching an investigation into 1.4 million Honda vehicles and oversights during the automakers' previous recalls.

The National Highway Traffic Safety Administration said on Monday it is opening a probe into 1.4 million Honda vehicles after reports of serious engine issues. Honda in November 2023 recalled 249,000 vehicles in the United States with a 3.

The U.S. government’s highway-safety agency is investigating complaints that engines can fail on as many as 1.4 million Honda and Acura vehicles.

The National Highway Traffic Safety Administration said it’s opening a recall query to determine the severity of the problem in vehicles not included in the 2023 recall.

Last year Honda recalled hundreds of thousands of vehicles due to engine failure and this year they may have to recall more.