Strong exhaust smell anytime engine accelerates, such as downshifting when going over an overpass on an interstate highway. Not "hard" acceleration really. I have researched, and know this a common problem, and has been since the "5th gen" Explorer came out. I know it has been brought to the attention of NHTSA, and I am just registering my complaint hoping you can get the problem resolved. Thank you.

- Goliad, TX, USA

Exhaust fumes enter the cabin through the A/C vents intermittently. The A/C controls must be turned on and the vehicle must be accelerating or climbing a hill. It loads the cabin heavily at times with exhaust fumes, but appears to clear quickly when normal operation resumes.

- Winkelman, AZ, USA

Was accelerating on the interstate and a very foul odor, like exhaust entered the cabin of the vehicle. This has happened on many occasions, with the windows up and down, ac off and on, heat off and on, going 10mph and going 60mph, during hard acceleration and during moderate acceleration.

- Boise, ID, USA

Upon consistent moderate to heavy throttle, the cabin fills with fumes/odor which smells like a mix of exhaust and burning/smoldering plastic or epoxy. It is strong, easily repeatable and happens all the time while traveling up long consistent grades etc. Does not happen in easy city driving, merging onto an express way, it happens nearly 100% of the time.

- Emeryville, CA, USA

Exhaust fumes enter the cabin area regularly when the sir conditioner is in re-circulation mode. This is a safety hazard for our baby who was born prematurely but has had to breathe in exhaust fumes when riding with us in our brand new Ford Explorer.

- San Diego, CA, USA

When accelerating the cabin of my Ford Explorer fills up with exhaust.

- Gilbert, AZ, USA

The Explorer Sport (V6 twin turbo ecoboost) started leaking sulfurous smelling vehicle exhaust fumes (possibly cyanotic ) into the car which made the occupants feel unwell. Ford have a fix that they do not advise customers about so the fume issue is known to them ( tsb 12-12-4 ). this fix has been performed yet the odor persists in certain circumstances. We have little confidence that the problem has been properly resolved and we have little confidence in driving a car with this type of fault. It is disturbing that oxides of sulfur and hydrogen sulfide can only be smelled within certain concentration limits and that the "nose" becomes insensitive to them at higher concentrations. Other people are suffering the same problem and I think it S only a matter of time before a driver becomes incapacitated and has a serious accident. If this has not already happened. Many other reports of this problem on various websites.

- Sumas, WA, USA

Exhaust smell coming out from air conditioner system at high rpms (about 3500).

- Brooklyn, NY, USA