Rep Power: 302

in this car i think that makes little difference in gas mileage. i drive a manual and i always shift at 4k. my gas mileage has only went down a little. most of my lost gas mileage is due to the winter weather. BTW always driving under 3k can be bad. the vtec doesn't kick in barely at all which is not good for it. so i have heard.

 
Rep Power: 330

21!?! thats messed up. I have an 04 VP coupe 5spd, and I last got 455.2 miles on 11.39 gallons; about 40 mpg.

 
Rep Power: 400

yeah something aint right. i can beat the **** out of my S2000 and STILL get like 23-25mpg

 
Rep Power: 320

I have a auto, so i dont need to shift. My car already has 30k on it, so its already broken in. Not going past 3krpm wouldnt hurt the engine. 3k rpm is fast enough to go 75mph in a auto since the gearing is less aggressive. The vtec does make a little difference since below 3k rpm, only one intake valve is open at 3k rpm and both open above it. If he does 90% citiy driving that can explain some of his poor mileage. I would just take it to the dealership to get it checked out. I dont think the d17's really get broken in till the 15k mark, because my mpg kepted going up all the way till 15k. When i first got my car i was getting 26-28mpg. Then after my first oil change i got 30mpg and now i average around 33-35mpg.

 
Rep Power: 0

u can get it at kragens, or any place that does maintenance. if your air filter is dirty as hell it will starve your engine and it will feed more gas to keep ur car going. manual cars get better miles than auto's

 
Rep Power: 0

yea that's weird, some of the civic's here get hella low mileage like me, but some get tremendous amount of mileage..35-40? on city?! **** crazy. weird..might change my air filter tommrw.. hopefully it will make a BIG difference...