obermd· Premium Member
I suspect the short runs of less than 10 minutes are killing your fuel economy. The engine never gets a chance to warm up. Take it out on a road at 55 MPH and drive out and back for 30 minutes each way. Then see what the fuel economy reports. Also, to rule out a dragging brake, when you get back, use the back of your hand and gently touch each wheel. They may be warm but they shouldn't be hot - a hot wheel indicates a dragging brake.