My wife and son have had frequent headaches after driving in our vehicle for long periods of time. This has been an issue for well over two years. We initially thought they were getting motion sickness but after finding out that there are significant issues with Explorer and exhaust fumes the problem is likely a result of exhaust fumes in the vehicle. We have continuously had a rotten egg smell coming from the vent which I assumed the A/C filters needed changed. The smell is instant upon running the A/C and continuous while driving the vehicle. The odor is stronger at the beginning but this could be due to acclimating to the smell while driving. I changed all the filters in the vehicle and sprayed the vent system with an odor treatment but the smell didn't go away.

- Guyton, GA, USA

Exhaust fumes in interior.

- Tonkawa, OK, USA

On acceleration large amount of exhaust fumes in the cab of the vehicle.

- Middleburg, FL, USA

Experiencing exhaust fumes entering passenger compartment.

- Kildeer, IL, USA

When quickly accelerating to highway speeds there is an burning/exhaust smell in the cabin. Does not matter if the A/C is on of off or whether its on outside air or recirculation.

- Abilene, TX, USA

When there is a heavy rain the serpentine belt squeals at various moments, for short periods of time. This has been going on since I purchased the vehicle in 2014, but dealership said it was a known issue and there was nothing they could do about it. They said it was due to the belt getting wet and Ford didn't know how to prevent it from happening, and that it occurs on other Ford trucks too. My other issue has started recently happening to when it rains heavily, the "low battery features tempor. Turned off" notification comes on and my steering wheel locks up briefly while driving. I checked my battery connects as the manual says to do and they are fine. This only occurs during heavy rain and it happens at various times during driving. It never just stays on, but will turn on and go off at different times during the drive in the heavy rain. Seems like something is getting wet causing a shortage, but either way its dangerous when my steering wheel locks up.

- Airway Heights, WA, USA

An exhaust smell enters the cabin of the vehicle. I first started to notice it when the car was idling and I thought it was coming from the car ahead of me. This continued on and off for months until more recently when the smell was present even as I drove the car. I have had headaches, dizziness and stomach upsets for months realizing that my vehicle was perhaps no longer safe for me to drive. I brought it in to my dealership and they immediately acknowledged the smell and gave me a loaner. They have filed a complaint with Ford and are currently waiting for the repair parts but they are on backorder. I was told that police departments have been complaining about the same thing. I just received a class action lawsuit notice so I imagine this will eventually be a recall. In the meantime I cannot drive my own vehicle without risking my health. The cause to me is unknown, I have read that it is a defect in the engineering of the exhaust system.

- Buffalo Grove, IL, USA

Strong smell of exhaust fumes inside passenger compartment

- Georgetown, TX, USA

While driving vehicle, I noticed a very strong smell of propane or natural gas. When vehicle was stopped and idling, the same smell was detected outside the car. The next day, the vehicle smelled again while driving, only this time it smelled like rotten eggs.

- Drums, PA, USA

My Ford Explorer has a bad exhaust odor in the cabin when hard accelerating and on cold morning even at idle it is impossible to notice the smell and it lingers in the cabin in tell you open a window. I can smell it anytime I get on the high way but there are times when I can smell a chemical type smell when stopped a lights.

- Kearney, MO, USA

Exhaust smell inside cabin. I notice a bad exhaust odor in the cabin if I accelerate over 3,000 RPM.

- Miami, FL, USA

My car started off with a propane gas smell which would come and go. Then it turned into this sulfur odor. Which had gotten so bad that you could only drive the car if all the windows were down because the odor would make you sick. The car was in motion at all times. You could smell the odor with or without the heat on. Then at which point the odor never actually left the cabin of the vehicle. At which I would just leave the windows open, in hopes that the car would eventually air out.

- Elma, NY, USA

Whenever I make a hard acceleration, there is a foul smell in the cabin. Smell is similar to rotten egg or bad catalytic converter. I normally always have the A/C on and in recirculate. I have noticed this ever since I bought the car new. Two dealerships had no answer and said they had not heard of any complaints.

- Caledonia, MS, USA

2014 Ford Explorer Sport, strong smell of engine exhaust fumes entering passenger cabin. Must drive with windows open to vent out passenger cabin. My safety as well as my family's safety is at risk for carbon monoxide poisoning, respitory distress, asthma and possible unconsciousness while driving. The overwhelming engine exhaust fumes within the passenger cabin at times is unbearable.

- Cromwell, CT, USA

I bought a brand new 2014 Ford Explorer and the extended warranty at the time of purchase. The exhaust fumes coming into the vehicle during acceleration at highway speeds. I took the truck in to while it was under the bumper to bumper to be fixed and what was done at the time was reprogramming exhaust and ac intake. This did not fix the exhaust problem but did improve the smell and how often it occurred. I recently took my truck into get the exhaust fixed and they will not fix it because it is passed the bumper to bumper but this is the same problem took in to be fix prior.

- Liberty Hill, TX, USA

Exhaust fumes leaking into cabin causing family to breathe in fumes. It has happened since we bought the car new. If the vehicle ac is in recirculating mode and you accelerate, fumes fill the cabin for a short period of time. We always have to roll down the windows to let the fumes out. It happens essentially every time you drive the car. I called Ford dealer and they said that there are no complaints they have seen. Causes headaches and nausea.

- Spicewood, TX, USA

Exhaust smell in cabin while HVAC on and windows up. This is most noticeable while accelerating and after coming to a stop.

- Ankeny, IA, USA

Strong "natural gas" smell inside car while driving and very noticeable outside of car upon exiting interior. Can smell from inside my house when parked in garage. Started 1/26/17 with 63,200 miles on my SUV. Took to Ford for service on 1/30/17 and was told there were no emission problems and that it was due to my ptu which needed to be replaced along with ptu vent valve.

- Bryant, AR, USA

Anytime the Ford Explorer goes over 3000 rpms there's a strong exhaust smell in the cabin of the car. Paid to look at out of pocket at the dealership and was told the problem could not be reproduced.

- Baton Rouge, LA, USA

Upon exceleration, a rotten egg type ordor is evident.

- Naples, FL, USA