a few things to note:
driving belowe the "bulk" of the powerband (lower than about 2K) is a waste of time... There is more strain on the transaxle to pull a car that low in the rpm range, and in turn uses more gas.
Also.. coasting in neutral or with the clutch in uses more gas than leaving it in gear and "engine braking" down a hill.
In neutral, you are still pumping gas through the injectors (idling)... in gear, it will actually shut off the injectors and stop using gas at all.. Coasting in gear is the most efficient means of operating the engine that is possible.
You will see the best mileage staying between 2K and 3K (power band and secondary operation, respectively).
Ray
