If your engine is overheating or running hot, it will affect fuel economy. The increased heat load of your engine will equate to a loss of efficiency. I cover how to deal with an overheating engine extensively in the What to Do If Your Engine Overheats article. Check that out if you have an overheating engine.
Video Title: Finding and Fixing the Causes of Poor MPG -Overheating Engine Video Description: If your engine is overheating or running hot, it will affect fuel economy. The increased heat load of your engine will equate to a loss of efficiency. Thumbnail: http://www.ericthecarguy.com/images/faq_buttons/poor_MPG/Poor-MPG-icon-1200.jpg