Two problems related to engine noise have been reported for the 2018 Ford Focus. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 Ford Focus based on all problems reported for the 2018 Focus.
The engine stalled once on August 20th, 2019 while driving on the interstate. Each time that I fill the tank with fuel I have to try 2-3 times to start engine as it makes a noise as if I'm completely out of fuel though it's a full tank and I'm still at the pump. Ford dealership stated to me this is "normal" for all cars though I've never dealt with this and at 39 I've had several cars.
Ford Focus, hesitating when driving, engine stopped while driving and the engine restarted. Over period of time, heard strange noises like a loud boom while driving. Happens only when gas level is around half tank. Dealer says there is no recall on the VIN. Cut off happened after making a turn also the boom noise. Hesitation usually on slight uphill. Dealer said they will check with Ford company about this. I'm actually afraid to drive it anymore, it could cause an accident.