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Old 06-07-2018, 09:17 AM   #9 (permalink)
California98Civic
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Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,297

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 2,373
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Quote:
Originally Posted by Smithcraft View Post
... Generally, when you get a car running better, the economy should improve. Why it doesn't with this one, is what's irritating to deal with.
How you drive has a big effect. But a big part of your frustration might be due to expectations of higher economy and the fact that it is an automatic. The EPA 2008 rating formula, which is more realistic for most drivers, rates the 1998 4 speed auto EX at 24 city, 31 highway, and 27 combined. Your car is more or less running as expected. Modding will help. Start by pumping to max sidewall on the tires. And there are some low-prifile and cheap mods you could try too.
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.



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