Hi, I'm new here but was hoping I could get some good answers. I have a 2004 CRV LX and it was typically making about 230 miles combined street/freeway on 11 gallons then suddenly last November 2013 I noticed the mileage getting a lot worse, barely 200 miles on 12 gallons which is about 16 mpg which is ridiculous! All of the maintenance and repairs are up to date and everything has been done that is needed so I don't know what to do. My repair guy said it could be Oxygen sensors but the check engine light has not come on at all and I don't want to do work that is not needed and will cost me money if it doesn't solve the problem. And if it does need need the new sensors any idea how much money that type of job costs? I am unemployed for over a year and am very tight on money so I need help in finding the problem because the gas costs are just too much. Thank you in advance!