Very strong exhaust fumes entering vehicle at or above 3500 RPM. It happens every time accelerating to highway speed. Entire cab fills with fumes immediately and does not disapate until all windows are rolled down. Experienced headaches, dizziness and nausea. Owner had to trade vehicle (at their expense) as defect was causing daily health problems. Ford needs to be forced to notify consumers about this problem before vehicle is purchased. Owner had 2015 Ford Explorer with same problem and won lemon law case against Ford - lemon law arbitrators smelled what they described as exhaust fumes during lemon law hearing test drive. Ford repair attempts do not work! NHTSA and Ford need to determine fix or recall vehicles. Exhaust fumes contain carbon monoxide as well as many other toxic chemicals. Ford admits exhaust fumes entering vehicle but claims low volume/safe. Please consider that infants and young children cannot be exposed to same carbon monoxide levels as adults without very serious and life threatening harm. Ask a doctor, not Ford!!!

- Jacksonville, FL, USA

I have read many complaints about exhaust entering this vehicle while driving. Ford's remedy is not correcting the defect. Some people have taken their vehicles to the dealer up to 7 times and the problem still exists. Some people have passed out from the fumes and crashed their vehicles. How many complaints do you need to receive to issue a safety recall? do you even read these complaints. I called your hot line this morning and no one could give me any information about the problem after waiting on hold for 25 minutes. Your website only shows complaints and no updates about your investigation of the issue. I called Ford twice and got the run around. I called my dealer twice with no satisfaction. How many people need to get sick or die before you take action. My vehicle is over 2 years old and only has 2800 miles on it but it has issues with exhaust entering the vehicle. I read that Ford will reprogram the climate control module to let more fresh air in from outside but that will not fix the problem because there is no fresh air when you are driving in traffic and drawing in exhaust from all the cars in front of you. I will fix the problem myself or wait until you or Ford knows the real cause of the problem and decides to fix it instead of trying to pacify the owners.

- Cool, CA, USA

Car smells strongly like natural gas inside cabin when driving, and when sitting still - eyes burn, throat sore, headache after driving it for 5 mins or more.

- La Quinta, CA, USA

Exhaust fume smell, like rotten eggs causing nausea and bad headaches. This happens while driving on the road, both highway and city streets

- Liberty Lake, WA, USA

I bought this car in August of 2016 and noticed when accelerating to get on a highway or doing any type of quick acceleration the vehicle put off an awful smell in the cab and the smell is similar to rotten eggs. I've brought the vehicle in for all its regular maintenance at the dealership and spoke with the service manager about the issue and the response I got was we heard this before but have no solution. No solution?? I'm breathing in god knows what and I'm always in the vehicle with my family, friends and business associates and that was the response I get! I have no idea what its possible doing to myself and others but I'll tell you this it cannot be good. I am at the point with this vehicle that I don't want to get in it any longer as I am concerned about my health and what possible damage its doing to me and others. I am so disappointed in the fact they have no solution and I will not be buying another Ford product ever again.. this problem has been going on since the week I picked it up and has not stopped in over a year and 2 months. If there was a way to get rid of it today I would but unfortunately I still have a year and 8 moths before I can turn it in, which I will the first day I can legally can.. Ford should take these cars back and terminate the loans or leases and let people go get something that's safer for them to be in. Don't give back the money as myself and others have used the vehicles up till this point. To be fair Ford Motor Company shouldn't be responsible to paying people back for a time that people used the vehicle but they should take them back. They are making vehicles ( Ford Explorer ) that are not safe for peoples health. One very dissatisfied customer. In the end they will get the car back and I will move along to another brand!

- Levittown, NY, USA

Our Ford Explorer has an exhaust leak that enters through the dash vents when driving, or when parked with motor running. When I park in garage. I have to open back and front garage doors to allow air to "clear " ir from garage, so it does not enter home. Our Ford dealer said there is no recall.

- Hesperia,, CA, USA

Carbon monoxide detector was activated while driving our 2016 Ford Explorer.

- Bellflower, CA, USA

The tailpipe occasionally emits blue-gray smoke, as if it is burning oil. I have witnessed this when the vehicle was stationary. The passenger compartment occasionally smells like smoke. The passengers in the rear of the car tend to notice it first, and then the passengers in the front can smell it. It seems to happen when accelerating at a high rate, such as when entering a highway from an on-ramp.

- Durham, NC, USA

Purchased new vehicle 2/2016 and has been taken to the dealership 7 times due to engine/exhaust smell on heavy acceleration coming in the cabin of the vehicle while driving on the highway. Service invoices are attached with the exception of 1 that was done 3/2017 and no paperwork was given to me on that visit.

- Lillington, NC, USA

You can smell exhaust fumes inside the cabin while driving the car. It usually happens upon acceleration during highway or city driving. My wife says she has smelled it before but while our whole family was in the car recently, it was unbearable. I was not aware of the problem. When I discovered it, I immediately took the car to the Ford dealership for service.

- Angleton, TX, USA

Smell of exhaust fumes entering the occupant cabin of vehicle. Occurs when vehicle is under acceleration with air condition running (warm weather). Smell is quite strong, concerned of carbon monoxide poisoning. I've taken this up to the Ford dealer - they've said Ford is sending letter announcing that this problem will be fixed. Documenting complaint with ntsb as this should lead to recall, not just voluntary fix.

- Galena, OH, USA

I have owned this vehicle for 3 months. Exhaust is leaking into the cabin of vehicle. Has been in the shop twice to be "fixed". after having the vehicle back for a couple of days it is having the same issue. The exhaust smell happens when accelerating quickly with the ac on.

- Mather, CA, USA

3-5 seconds after a hard acceleration (near or at full throttle), the cabin fills with a strong, burning fluid smell. I cannot pin point the source of the smell but it happens 100% of the time. This happens only in motion under hard acceleration on any type of street. I use 93 octane and full synthetic motorcraft 5W-30. I have had the vehicle in for warranty repair for an unknown noise and I was told the exhaust was slightly out of alignment. This did not fix the noise and the smell has remained as well.

- Kingwood, TX, USA

Upon stronger than usual acceleration or at highway speeds or both, the smell of exhaust can be detected in the cabin. Under hard acceleration, the smell of rotten eggs becomes very strong in the cabin. After trips longer than an hour, with ac or heat running (no open windows), I have become very ill, with fearsome headache, nausea, lethargy, and gastrointestinal distress. Passengers have also reported headache, nausea, and feeling tired. We believe this may be due to exhaust entering the cabin and causing carbon monoxide poisoning. Yesterday, on a longer trip from milwaukee, wi to Chicago, il and back, I became so ill that upon returning home, I fell asleep immediately with the worst headache of my adult life. Intense nausea lasted from 2pm (about 3/4 of the way through the drive) until about 9pm. This has happened consistently during longer (greater than 20-30 miles) trips. Hydrogen sulfide smell is apparent most during wide-open accelerations before engine warm-up.

- Milwaukee, WI, USA

When accelerating or going up incline car starts to smell like carbon monoxide (like the heater is on). Circulation is within car. In order to get out must put on outside circulation and roll down windows.

- Saint Bernard, LA, USA

I purchased my new car during October 2015 from dealer in va. After some time, driving the car noticed an odor like rotten egg comes and goes. However, I thought, it could be due to the new car. Later time, I noticed every time I drive the car, I feel tired, having headaches, lack of energy, and falling sleep. I consulted with my doctors and they really did not find anything. Until recently, watching chanel 4 news and they were reporting the problem with Explorer exhaust system and possible carbon monoxide leak into interior of the car. Please advise if this issue is accurate and what we have to do to fix it. Thanks

- Ashburn, VA, USA

I have a 2016 Ford Explorer limited edition under my dads name and my wife is the primary driver on it. After getting our car I drove it daily as commuter for 2 months and sometimes I smell something bad inside like burned tires but I just ignored it because I said my car is bnew and maybe its from outside and after that my wife start driving it but last December 2016 we went to vegas and I janssen (husband) is the one driving on the car and smelled something burned tires inside the car while cruising on it, I checked the tires/break outside but I dont smell it from outside, so after that we went to our dealer and checked it found out theres a carbon monoxide present inside and they fixed it by covering the holes of the car that may be the entry of smoke from outside and updating the system as per service guy told me "rene" and said everything works well now. After few months it was June 2017 I smelled it again and concerned me more because my wife is pregnant and I know CO2 is really bad on our health and I know that because we are both nurses and we sent it back to the dealer and my service guy "luis " told me they put some rubber in the rear door for the purpose of sealing the door that maybe the smoke from the exhaust is the one causing it and take note " the car stays 1 week in the service department". and now Sept 2017 the same thing is happening and I called my dealership, I spoke to luis and casey and they told me there's still waiting for the service manager because they are bussy, I told them my concern that my wife is pregnant she's on 8 months now and it makes me really concerned of what is going on with the car but they just told me to wait, and my wife daily car is it. So incase something happen with my family this is not really safe for us, so I really need a big help from you NHTSA that we can solve this problem, I heard others too esp police.

- Norwalk, CA, USA

Since I have purchased the vehicle in February 16 it has been back for service nurmous times, starting 2 days after delivery! major complaint has been coolent loss and burning coolant smell following with a oil leak at the same time. This is a new vehicle 10 miles on it shouldn't have these issues so I demanded a different vehicle, was refused due to demographics! well the dealer brushes everything off as all do say it's normal it happens, as time passes it goes back to the dealer for same issue they replaced a oil seal again and coolant loss and smell is normal to them, they can't find any issues, I tell them it's after long drives well each time they have it over a week. To boot they ignore my complaint about the rotten egg smell I get on acceleration! they tell me it's probably the gas I'm using, mind you this is verbal after the fact, they did not want to put it on the work order. They ordered a new steering wheel due to it peeling. I was also told that technically I am responsible for the diagnosis if they do not find anything wrong and that I had to cover the techs time, well I have to take it back in again for no coolant in the overflow foul smell coming from the vents and exaust smell in the cabin. The vehicle has 14900 mi should not have these problems espicaly costing what it did

- Garfield Hts, OH, USA

When driving the vehicle uphill or accelerating onto the highway or freeway there is a strong exhaust odor in the cabin of the vehicle coming from the vents. It was detected earlier this year, however we did some extra driving through the summer to confirm the issue. Once confirmed, we took it to our Ford dealer. They could not recreate the issue, but had an idea as how to fix the issue. To fix it, they had to get approval from Ford corporate to do the fix. Ford corporate told them there was no issue since it could not be recreated, and we can pick up the vehicle at any time. The vehicle was dropped off at our dealership on August 31, 2017. We were notified today (Sept. 7, 2017) that the vehicle has no issue; that the problem is not on the civilian Explorer.

- Kalama, WA, USA

2016 Ford Explorer XLT V6 ti-vct flex fuel vehicle (FFV). Exhaust enters cabin during acceleration. Putrid odor of exhaust resembles a foul blend of vomit, rotten eggs, burnt hair, burnt wax. Headache and horrible smell lingers in sinuses continues to day following exposure. Stench is much worse under heavy acceleration and/or driving uphill with rear A/C on high fan speed. Ford service acknowledged wide-spread problem performed tsb 17-0044 sealing underbody seams, reprograming rear A/C and replacing exhaust components. Tsb 17-0044 is ineffective and problem persists. 1. Ford has not isolated source of excessive carbon monoxide (co), hydrocarbons (hcs) and nitrogen oxides (nox). Is engine deflection under acceleration impacting exhaust manifolds causing leakage in pipe joints" is rich fuel mixture in engine with unburned fuel producing elevated catalytic temperatures damaging manifolds or joints? are FFV engines fitted with undersized or faulty catalytic converters? 2. exhaust system fails to expel exhaust away from vehicle. Ford acknowledges as evidenced by tsb 17-0044 replacing mufflers and exhaust tips. 3. exhaust gasses pool in bumper cover and numerous cavities under body. 4. air conditioning system fans actively pull exhaust into the vehicle likely through air extractor vents in quarter panels. Ford acknowledges as evidenced by tsb 17-0044 replacing air extractor vents and reprogramming rear A/C to slow or halt fans under various braking scenarios. Ford misrepresenting elevated co levels only found in police interceptors. After Ford service sealed seams per tsb 17-0044, I detected 17 ppm of co in two detectors. Ford must evaluate every exhaust component under loading for deflection and excessive heat. Can exhaust enter via mid body, engine compartment or cowl in addition to rear of vehicle" pics illustrate rear infiltration.

- Chandler, AZ, USA