Exhaust odor enters the cabin when under high acceleration when merging onto a freeway or under sustained, high RPM (above approximately 3,000 RPM) when traveling in mountainous freeways with sustained, uphill grade. I have noticed this occurrence more than six times since I purchased the vehicle 5 months ago (at the end of March 2017 with 25,000 miles). The odor smells like sulfur and fills the cabin to the extent that persons sitting in the rear seats can smell the odor. The air conditioning system is usually on and in recirculation mode. Currently, the vehicle has 30,000 miles (August 26, 2017), has never been in an accident, and is in excellent condition (except for the exhaust odor!) and has no mechanical modifications.

- El Centro, CA, USA

We are getting exhaust fumes coming thru ac ducts while driving

- San Antonio, TX, USA

Vehicle under hard acceleration and the air is on recirculate, the cabin fills up with exhaust.

- Goodyear, AZ, USA

There is a strong exhaust odor coming inside the vehicle with all of its windows up every time after a heavy acceleration, regardless of whether or not the A/C ventilation is on or not. The strong exhaust odor is inescapable afterward while still in motion on a city street or highway or while stopping after the acceleration. This has been a consistently repeatable issue with my vehicle since purchasing it as brand new. My dealership did not find a tsb and offered no resolution for the problem.

- Perry Hall, MD, USA

Exhaust fumes odor while driving is causing nausea and headaches to me and my wife making it unbearable and unsafe to drive. It started out only when we would turn on A/C but now its all the time.

- Ontario, CA, USA

The contact owns a 2014 Ford Explorer. The contact stated that while the vehicle was being driven on several occasions, exhaust fumes entered the cabin of the vehicle. The contact stated that the failure occurred when the accelerator pedal was depressed with the RPM's above 3500. The vehicle was not taken to be diagnosed. The manufacturer was not contacted. The approximate failure mileage was 40,000.

- Manalapan, NJ, USA

When accelerating, a strong odor comes from the air vents. The odor lingers and smells very strong, I believe this may be exhaust fumes, as it only happens during acceleration.

- Abilene, TX, USA

My Ford Explorer has significant exhaust smell in the vehicle at times, usually after I have kicked it down into passing gear, such as in climbing hills. When I had it in for service, I asked the dealer I bought it from to try to identify what is causing it and they claimed they could not discern any odor. I have since learned of the technical service bulletins that have been pushed out by Ford for my very problem and have also learned that there is no indication any of their efforts to fix the problem are actually working. I cannot afford to pay Ford for easter egg hunts, so I and my family are waiting for a recall. In the meanwhile, we are driving the vehicle with the windows down. We have been contacted by one law firm so far that is involved in a class action lawsuit over this issue. We would rather have Ford fix the problem. The problem was initially noticed just after we bought it, but we thought it was due to something on the engine that would burn off in time. The problem has continued the entire time we have had the vehicle. The problem doesn't seem directly related to speed of travel.

- Houston, MO, USA

Carbon minoxide entering the cabin. Exhaust fumes are entering the cabin.

- Katy, TX, USA

Smell of exhaust fumes present in the cabin. All passengers complain of headaches, dizzyness, nausea, and lethargy. This occurs after driving with the windows up. Second owner of vehicle. Problem has existed since at least June 7th.

- Bridgeport, CT, USA

Exhaust fumes can be smelled when we start veh. And when we have rapid acceleration. Mentioned to dealer several times, was told very few others have had issues and no recall for item as of yet... that was last year in 2016. Date below on when it happened was when we purchased from dealership new.

- Collinsville, OK, USA

There is an exhaust smell of rotten eggs, burnt rubber, and sulfur that protrudes from the air vents into the cabin of the vehicle upon acceleration and a smaller amount of exhaust protrusion upon idle. Both city and highway driving are affected. The exhaust smell has caused some passenger nausea.

- Somerset, PA, USA

Exhaust fumes enter the vehicle when car accelerates. Happens more with harder acceleration. It happens regularly and

- Selma, TX, USA

Exhaust smell in cabin. We experience a strong odor in the cabin when accelerating, typically while getting onto a highway or passing. It makes no difference if the windows are open or the ac is on. We don't drive this vehicle very much to date we have 28000 miles on it.

- Asheville, NC, USA

Purchased a 2014 Ford Explorer in February 2014, and within weeks of owning the vehicle I started to notice a foul smell entering the cabin immediately after acceleration. If acceleration occurs quickly, with a higher then normal RPM occurring, the smell becomes worse. On three separate occasions, I have taken the vehicle to mac haik Ford in houston for repair. The first two visits were were non-productive, as the dealership claimed they could not reproduce the issue. On the third visit, I asked that they technician go on a test drive with me in the car. This visit finally resulted in an admission from the technician that he could also smell the odor, and they agreed to keep the vehicle and identify the source of the issue. After a few days, I was told that the issue had been corrected by adding an additional vent line towards the rear of the vehicle. Within hours of having the vehicle back, it had become obvious that a permanent fix was not installed, and the odor inside the cabin has continued to occur regularly over the past three years.

- Houston, TX, USA

When the vehicle is running the exhaust can be smelled inside the cabin. This happens to a noticeable level when the vehicle is excelerated at a faster pace by pressing the gas pedal quickly to excelerate quickly. This has occurred multiple times and can be reproduced by fast exceleration. The consumer stated the rear left tire blew out. The passenger was injured.

- New Port Richey, FL, USA

Nausea, headache. Problems may be related to carbon monoxide issue's with vehicle's on-going investigation.

- Viroqua, WI, USA

First long trip in my SUV. Most of my driving is city driving to and from work. While traveling with the family on our vacation, we all noticed after acceleration (passing cars or up inclines) the car smelled like sulfur or a waste treatment plant (other clever words used by my daughters). This was all highway (two lane up to four lane) travel. Approximately 600 miles each way. With the frequency of the problem on this trip, I realized I've smelled it before but just assumed I was driving past a sewage problem or treatment facility. I never thought about an issue with my car that would cause a smell like that. Upon googling what might cause the problem, I found a lot of info on the issue, including a Ford service bulletin (attached), lawsuits and your organization's investigation of the issue. Based on what I read, I felt I should let you know I have the same issue. I've contacted the local Ford dealership from whom I bought the car and who services the car and they eventually found a bulletin that covers the issue but because my car is recently out of warranty, said I need to pay for the investigation and possible fix(ES). I am not happy about that either and am now concerned whether there is actually a fix. Given the knowledge Ford has about this issue, I would expect Ford to fix this at their cost... assuming there is a fix. I'm going to follow this with a call to Ford Motor Company's customer service department to make them aware.

- Columbus, OH, USA

Our '14 Explorer has consistently allowed exhaust gas to enter the passenger compartment upon 1/2 to full throttle acceleration. Still under warranty, the dealership said they would fix it for about $800! they said it was coming from exhaust entering the rear ac. Ac on or off makes no difference.

- Fredericksburg, TX, USA

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