I have decided that maybe MPG is almost a completely fake measurement. After all how can they say that a vehicle gets 40 MPG? What RPMS were they runng? What speed were they going? Were they going uphill or down hill? They do not say how they cam up with that number. "City" MPG is a completely fake number. How do they define "stop and go"? HOw long were they sopped? How long, what speed and RPMs while going? I am starting to think that fuel efficiency should be GPH (gallons per hour). Think about it, MPG is really only good if you can maintain a steady pace. In todays city (including interstae) driving, it is stop and go. Usually that is more stop than go, and when stopped you are burning fuel while idling. Sometimes the interstate is moving only about 5 mph for a few miles. I have noticed that sometimes I might use the same anount of fuel to go 10 miles in half an hour as it would 40 miles in half an hour. However, it all depends on the road, speed, and most importantly RPMs.
So I think we need a new way to measure fuel effiency, something based on time and RPMS.
Soren
