I know this problem could be a mixture of anything but I'm just looking for some good starting points. What are some of the main causes of bad gas mileage? I don't have a lead foot so that isn't the problem. My CR-V is a 2008 EX AWD with 63k miles on it. Lately, when I check I'm always averaging around 17.9 MPG. I've only had it for just over two months now and I do often drive in traffic rather than the open road but my other cars have always gotten better than that including the V6 Mercedes I replaced with the CR-V. What would you check first or are AWD CR-V's prone to worse mileage? I noticed most people getting well over 20 MPG.