I've recently been hit with rather low MPG on my Charger. I know that many things can cause a decrease in MPG but I'm going to ask the question anyway. What are some possible causes of a sudden decrease in efficiency? I've already checked the PCV, thought that since the Charger burns roughly 1qt/1k miles it might have fouled the plugs early so I'm going to change the plugs next week (going to do a compression test as well).
1/23/13 - 12.9mpg
3/2/13 - 14.4
3/29/13 - 15.1
Before this I was normally getting 16.5-18.5 in town. I literally went from getting my usual mileage to the 12.9 figure and ensuing values out of no where. The car drives the same, no power loss, nothing funny going on mechanically. I'm kind of lost.
1/23/13 - 12.9mpg
3/2/13 - 14.4
3/29/13 - 15.1
Before this I was normally getting 16.5-18.5 in town. I literally went from getting my usual mileage to the 12.9 figure and ensuing values out of no where. The car drives the same, no power loss, nothing funny going on mechanically. I'm kind of lost.