Quote:
Originally Posted by California98Civic
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.
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The EPA has altered it's test protocol to better reflect the 'real world' and recent figures are more conservative than in the past.It's best just to establish a 'baseline' performance for a given vehicle and then compare to that after mods are done.