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California98Civic · 03-14-2011, 11:36 AM

I have to admit I am puzzled by the millage numbers on your Civics. Some might be driving conditions, but maybe there is a mechanical issue too? I have owned my 1998 since 2001, when it had just 27000 miles. The old EPA estimate have always been better for this car than the new. I have the 106hp/103tq motor that was rated 32/38mpg. Years and years of tracking the millage have confirmed the old EPA estimates over and over again. Maybe there are more efficient gearing ratios on my version of the DX motor. I don't know. I have possibly done more mods now that you guys, but I am puzzled by the differences in our figures. I got 47.48 mpg in combined city/hwy driving on the last tank--driving a SLOW 53 max speed when I am on the freeway.

03-14-2011, 11:36 AM	#5 (permalink)
California98Civic Cyborg ECU Join Date: Mar 2011 Location: Coastal Southern California Posts: 6,299 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 Thanked 2,174 Times in 1,470 Posts	I have to admit I am puzzled by the millage numbers on your Civics. Some might be driving conditions, but maybe there is a mechanical issue too? I have owned my 1998 since 2001, when it had just 27000 miles. The old EPA estimate have always been better for this car than the new. I have the 106hp/103tq motor that was rated 32/38mpg. Years and years of tracking the millage have confirmed the old EPA estimates over and over again. Maybe there are more efficient gearing ratios on my version of the DX motor. I don't know. I have possibly done more mods now that you guys, but I am puzzled by the differences in our figures. I got 47.48 mpg in combined city/hwy driving on the last tank--driving a SLOW 53 max speed when I am on the freeway.