Coronado

Good to know. I'll be sure to check out what the values are and see if within range. Thank you!

Thanks for the feedback!

Update: Replaced the mass air flow sensor, and after about a week of driving around, I retested the MPG again, Now seeing an average of 13.8 MPG with 40% highway / 60% city driving. So I guess headed in the right direction, but still shy of what I believe should be the average MPG of around 19.

Yes. MGP onboard computer was reset. Driving.... 60% city, 40% highway. Just installed motorcraft plugs and coils. RDU gear oil has been changed. PTU still needs to be checked. Water pump only replaced. Still getting 11 mpg average. I read a few posts about mass air flow sensor. They claim that if unplugged, idling car will shut off. If car stays idling, then the sensor is bad. Is this true? I unplugged mine and car continues to idle. Time to replace?

Thanks for the feedback. Since my original post, I had a new water pump installed from NAPA. So orange coolant has been replaced as well. Unknown if last owner did any of the other suggestions. So I guess next on my list will be... OxSensors / Plugs / Fuel filter Then... ATF / PTU+Dif GearOil / Steering & Brake line flush Thank you again.

Recently purchased a 2012 Ford Edge Limited AWD 3.5L with 155K miles. Engine and transmission seam to be strong with no signs of problems. However, I can't seam to get anything better than 12mpg regardless of driving style. Just did an alignment, and oil change. No change. I've read that spark plugs and fuel filter might be a root cause to bad mpg. True or false? What other things should I look into to resolve this? Thanks for any feedback.