The contact owns a 2017 Ford Explorer. While driving at an unknown speed, carbon monoxide emitted through the vents in the vehicle. The driver became drowsy while driving. The carbon monoxide remained in the vehicle until the windows were rolled down. The carbon monoxide detector detected 13 ppm to 16 inside the vehicle. The vehicle was taken to lake elsinore Ford (31500 auto center dr, lake elsinore, ca 92530, phone number: (951) 471-4100), but they could not detect the carbon monoxide due to not having a carbon monoxide detector. The manufacturer informed the contact that it was not an issue and someone would call back. The approximate failure mileage was 20,350.

- Menifee, CA, USA

Exhaust can be easily smelled when accelerating, possibly indicating a leak of carbon monoxide into the cabin.

- Fayetteville, AR, USA

The contact owns a 2017 Ford Explorer. Ever since the contact purchased the vehicle and began driving it, she experienced nausea, vomiting, dizziness, blurred vision, and headaches intermittently. The contact required hospitalization for the symptoms, but received no diagnosis. The contact stated that the symptoms occurred when she was in the vehicle for an extended period of time. The vehicle was not taken to a dealer or independent mechanic. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. A dealer was not contacted. The approximate failure mileage was 300.

- Yuba City, CA, USA

We purchased this vehicle brand new on 8/11/2017 (19 miles)and we started noticing a smell of exhaust when we accelerated and when we had the rear A/C on coming in the cabin. We had it at the dealership from Sept 25, 2017 to Oct 6,2017 (1496 miles). The problem still exists when we picked it up from the dealership on Oct 6, 2017. We believe this is a serious health concern as we have been experiencing headaches, especially my wife, who is the primary driver. We will not let our grandchildren ride in this vehicle with the exhaust fumes present. We are aware that Ford is aware of this problem since 2012. As this is a brand new vehicle, with 1496 miles, we feel that this problem is not going to go away anytime soon. We do not want have to keep taking this to the dealership for temporary fixes (tsb). We want a permanent fix, if that includes getting a new one.

- Lutz, FL, USA

The contact owns a 2017 Ford Explorer. When the contact depressed the accelerator pedal to increase the rpms to approximately 25-30 mph, the vehicle emitted a strong, foul odor similar to rotten eggs. The contact took the vehicle to sanders Ford (1135 lejune blvd, jacksonville, nc 28540; 1-888-897-8527) who diagnosed the vehicle and completed the directions on a specific service bulletin. The contact stated that the dealer replaced the vents underneath the bumper. The service bulletin number was unknown. The failure recurred. The manufacturer was not made aware of the failure. The VIN was unknown. The approximate failure mileage was 9,000.

- Jacksonville, NC, USA

Fumes enter car wile driving!

- Ridgeland, SC, USA

2017 Ford Explorer Sport. 3.5 ecoboost. When accelerating 3/4 or more on the pedal. Does not smell so much as exhaust as it does sulfur and bad egg smell. Only way to get the smell out of vehicle is to turn air off and roll windows down. Seems worse when air conditioning is on than the heat. Passengers usually get it worse than driver.. at least that's my experience, or that is the side with the problem. I was reading on websites before all these claims were brought up and I kept coming to the conclusion from reading up what complaints I found, it was that the twin turbos had a lot of blow back and it was only the ecoboost motors. Now I now differ and there is a curious problem and I owe a small fortune on a vehicle that's not safe to drive and also with a family of 5. does not have problem at idle or if driving gently. Can do it at low speeds or high speeds. Just give it half or more peddle and you will smell it. What do I do. Thanks. [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).?

- Wentzville, MO, USA

Exhaust fumes entering vehicle when stationary and in motion.

- Vienna, VA, USA

Exhaust fumes fill the cabin of vehicle during heavy acceleration. Usually causes headache. Dealer confirmed issue. Dealer advises Ford has issued a tsb but the parts have been recalled for months so no repair is able to be completed at this time.

- Hermitage, TN, USA

Exhaust smell coming into cabin from the front vents on highway acceleration.

- Flushing, NY, USA

After a scary long drive from Indiana to North Carolina I took my vehicle to the local Ford dealer service department letting them know that I could smell exhaust while driving and I felt overly tired, way more tired then need be. After testing it was determined that co was coming into the cabin of my vehicle. They still have my vehicle now after 2 weeks and the parts that were ordered were body filler and electrical tape. This does not seem to be the appropriate fix for this situation that could cause catastrophic injury or death and now I am scared to put my and my families lives in danger due to my vehicle trying to kill us. The vehicle was being driven on the interstate as speeds of 50-75 mph. This is very dangerous and if I would not have stopped so many times I would have passed out and caused an accident which could have killed me or someone else. I was advised that if I was going to drive the vehicle I should do so with the windows down, which is not acceptable and why I have had a loaner car for weeks.

- Whispering Pines, NC, USA

I rented the referenced vehicle from enterprise rental car for 1 week. Drove approximately 2000 miles. This 2017 vehicle had approximately 20,000 miles on the odometer when I rented it. I believe that the engine was the 3.5 liter version. Every time I accelerated hard, such as entering on the interstate, I could subsequently smell a very strong exhaust smell in the interior of the SUV. I also noticed when I rented the vehicle that all the windows and surfaces had a film on them - perhaps residue from exhaust gases. I am a 54 year old retired engineer and have owned and rented over 25 vehicles in my lifetime and find what I experienced with the Explorer to be very unusual. I also found that I was sleepier than normal when driving perhaps due to CO2 exposure. All of my passengers also experienced unusual sleepiness. The exhaust smell in the interior was undeniable. I find it very disturbing that Ford is trying to explain this as a problem with only the police interceptor Explorer due to after market modifications. My experience indicates that this is a completely false and misleading explanation. I am very pleased to see that the NHTSA is doing an ea on the problem. Ford has ignored this problem for years and the problem is very real. I was considering buying the Explorer which was one reason I rented the vehicle and from my experience I will not touch this vehicle and will not be purchasing one. Please do your due diligence regarding this problem and I hope to see that this eventually leads to a overall recall of all affected Explorer. Thank you.

- Debary, FL, USA

Exhaust smell comes into the cabin when car is accelerating. Seems worst when the ac is in re-circulation mode. You can smell the exhaust fumes right after the engine/transmission has downshifted to accelerate.

- Austin, TX, USA

Carbon monoxide detected in passenger cabin - after reading stories about possible problems with carbon monoxide (co) in 2016 Ford Explorer in mid July 2017 I purchased a kidde battery powered co detector and installed it in the rear area of the passenger compartment. It had not alarmed until we were traveling from seneca, SC to indianapolis, in. We were towing an 8X5 enclosed U-haul trailer at normal freeway speeds. Tow/haul was engaged because we were towing and the engine was generally running at higher RPM's, especially going up the mountain inclines. The co detector first alarmed West of ashviille, nc. Suddenly the headaches and drowsiness both my wife and I were experiencing made sense. We opened the windows and the alarm stopped after a couple minutes. After this happened 3-4 times I moved the detector to the front of the passenger cabin so that I could monitor the part per million display. We found that it only took 15-20 minutes of highway driving for the detector to display 31ppm, the detectors minimum concentration detection threshold. The level would then build over time. Due to the detrimental effects of co on the human body I never let the concentration exceed 62ppm. I found, however, that the peak co concentration detected was 103ppm. I assume this was reached while the detector was in the rear of the cabin, where the display was not visible to me. The service manager at lake keowee Ford suggested that I run the HVAC in recirculate mode. I tried many different HVAC modes - recirculate, normal/outside air, rear HVAC turned off - but the result was always the same, co being detected in the cabin within 15-20 minutes. Needless to say I am not buying Ford's claim that this problem is only with law enforcement vehicles with body perforations from the installation of after market equipment. The vehicle is going into a carmel, in Ford dealer this afternoon.

- Seneca, SC, USA

Occasionally when I drove the car I felt light headedness and diziniess. On 8/3/2017 I felt the dizziness again and ended up in a car accident. I felt as though I was going to pass out and in a flash I crashed into the car in front of me.

- Santa Ana, CA, USA

Smell of exhaust fumes inside vehicle when driving vehicle upon reaching speeds approximatey 45 mph and above off and on since purchasing new vehicle

- Yorktown, VA, USA

I am concerned about my 2017 Ford Explorer and a carbon monoxide leak. I have overall feeling bad since we got our new 2017 Ford Explorer, which is very out of character for me. I am a prior special operation veteran, overall in good health, and only 30Y/O. like many, who have complained about this vehicle I am getting nausea, weakness, and tension headaches from driving this vehicle. I have been very weak and having headaches, as of late. This has had a major impact on my day-to-day life. I couldn't explain why or what was going on with me it seemed as if it came out of nowhere. I am starting to think maybe I have long term exposure to carbon monoxide over the last 3 weeks. I got the Ford explore 3 weeks ago and this sudden sickness has been happening since then. I got so worried with my health"I went to the doctor. I explained to the doctor "I have no clue what's going on with me but I feel absolutely horrible. I feel like I have had a flu for almost a month". I was desperate and I know I sounded crazy but I have been having some serious bouts with weakness, fatigue, and headaches. I went to the doctor on July 31st 2017 and I really have been baffled by the sudden onset of symptoms. This was before I knew about the NHTSA investigation into the 2017 Ford Explorer. I saw the story run today (8-3-17) on good morning America and I started to put two and two together. At the doctor's appointment on (7-31-17) they pulled blood, and are conducting a bunch of test but nothing has come back. I am concerned, I am hoping it's not related to the carbon monoxide leak that others are reporting. My biggest concern is for my pregnant wife and unborn child. As a purple heart vet I have put my heart and soul into our great country and I need this Agency to please find answers to if these SUVS are safe. My families could depend on it thank you for your service.

- Apo, AE, USA

The vehicle was tested and found to have 18 ppm of co in the interior while in operation.

- Warrenton, VA, USA

Explorer with 2.3L ecoboost produces an exhaust smell during moderate to wot throttle runs. Generally seems to occur after lifting off the throttle and returning to cruising throttle position. Vehicle must be vented to prevent illness to passengers, has happened multiple times. Occurs more often when vehicle is under significant load (such as climbing a grade).

- Hamburg, NY, USA

Strong exhaust smell in passenger compartment when accelerating and/or merging into freeway traffic. I had to open all windows as my eyes were watering.

- Gahanna, OH, USA