Fill'er Up II

Some call it "hypermiling," but for me it was my first real concerted effort to drive in a sustainable manner, following as many of the tips as possible the I gave in my post of September 1 ("Fill'er Up. . .Less Often").
I own a 2000 Subaru Impreza Wagon with a 5-speed manual transmission. EPA mileage estimates give it 23 mpg for the city, 29 mpg for the highway. I went 330 miles on my last tank of gas doing mostly in-town driving. It took 14 gallons of gas to fill the empty tank, and some basic math (330 miles/14 gallons) revealed that I had averaged 23.6 miles per gallon for that tank.
Since then I have been making a conscious effort to drive sustainably. Specifically, I--
--took 3 minutes to remove my after-market "roof cargo basket" to cut down on drag. I don't use it very often, and it will be easy enough to replace when I need to. (I also tried to remove the two crossbars that are part of the roof rack, however I found the threads on one of the screws was stripped which kept me from being able to remove it, thus thwarting my efforts).
--went in for an oil change (the car was due) and had them make sure the tires were appropriately inflated.
--am accelerating gradually from complete stops at traffic lights and stop signs, keeping my rpm's as low as possible without straining the engine.
--have tried to be in the highest gear possible without straining the engine.
--have tried to anticipate stops, removing my foot from the gas pedal as soon as possible and letting my momentum, rather than the engine, propel me the last few hundred feet before braking.
--haven't let my speed get over 60 mph on the highway (pretty much the only highway driving that I did on this most recent tank of gas was on Highway 99 between Skyway and East Ave)
--have done my best to keep a list of errands that require a car, so as to plot efficient routes that maximize the use of my vehicle (rather than making multiple trips).
A couple of months later I found myself back at the pump, and reflected on the last 300 miles. I wasn't late to any appointments, nor did I need to figure in extra time to arrive at engagements promptly. I found that I was a safer, more aware driver. Nobody gave me the bird. And yes, my fuel efficiency did improve by 1.8 mpg to 25.4 mpg, a 7.6% increase. No, this is not earth-shattering, but at $3.15/gallon, it does translate into a $2.84 savings in gas over 300 miles. You can do the math regarding what that works out to in an annual savings. And I think I could have done better.
Of course, a truer account of my fuel efficiency would have added in the number of miles I covered while bike-commuting during the same period, as well as the number of times I was in a vehicle with another person.








