The miles per gallon on my 2009 Toyota has suddenly decreased by about 3 mpg. Anyone know why?
I've been getting 40 mpg on my 2009 Yaris since I bought it new. In the past few months, it has started getting 37 mpg consistently. I have about 85,000 miles on it and asked them to put in new spark plugs with my last oil change. I change the oil regularly. Any suggestions would be appreciated.
