does it need an o2 sensor?
I would jump out of my skin to get 19. The wife's hybrid Accord has been getting worse and worse mileage. It just hit 100K and is averaging under 30. That ****ing sucks for that car. We actually got as high as 40 years ago on a trip to Virginia and usually averaged about 34. It is usually hovering around 28 now. There is no indication of anything being wrong.