The peachtrees are killing my gas mileage!
October 9, 2007 10:30 AM Subscribe
How can I maximize fuel economy in a car with an automatic transmission?
posted by wondercow to travel & transportation (25 answers total) 3 users marked this as a favorite
I know the general tricks about reducing weight, keeping tires inflated, being light on the gas and brakes, etc. (as discussed previously
), so this question is targeted specifically at how the automatic transmission could factor into gas mileage. This is my first car with an automatic transmission (having driven manuals my whole life until now) and I am curious about what transmission setting I should use to maximize gas mileage. In case it matters, I have an 04 Honda Civic (not hybrid).
Having moved recently to Atlanta, I find myself in a lot of stop-and-go traffic and constantly driving up and down hills. This leads to a lot of up- and down-shifting when I leave the car in "D". It occured to me that perhaps I would be a bit better off by leaving the car in "D3" (one notch below "D") so it wouldn't shift so much. Is it better for gas mileage to keep the RPMs in the low-to-mid-range all the time rather than to be pivoting between low and high-ish RPMs? Is gas consumption directly proportional to engine RPMs?