96hb

96 hatch, stock d16y7, 226k miles. Pull a very consistent 42mpg, and that's all city.

tAlko

About 26 with my EM1

ClassyCG1

I drive a 99 Honda Accord V6 Magnaflow Catback and AEM CAI. Mostly city driving and 20mpg. I don't always drive conservative either. When I had the AEM CAI alone I got 30mpg highway!

jdottie88

nearly stock D16Y8 ('98 EX). Averaging 32 all day long.

B18C5-EH2

So far the replies look pretty good, but these topics usually end up with some pretty ridiculous claimed mpg.

It would be nice to see what equations/number are being crunched to get the mpg figures.

I'll show you how I get my mpg on my 1990 Civic wagon with B18B1 swap (LS tranny currently too)

310/11 = 28mpg

310 miles on the tank, and the tank is 11 gallons (at least that's the most I've ever crammed into it)

That number can get as crappy as:

240/11 = 21mpg

This is with the a/c on pretty much all the time, and hitting 7200rpm a few times daily.

This is all city driving too, as I've not been able to take this car on a road trip. I'd probably get some pretty good numbers if I could take a road trip AND not have the a/c on at all. for some reason the a/c really drops my mpg like crazy.

I'm hoping to get better city numbers by not having to use my a/c at all during a full tank cycle. The 28mph figure included a few rainy days where I had to run the a/c to best defog the windows.

slogfilet

iTrader: (1)

I calculate mine using the number of miles driven that tank divided by the amount of fuel I needed to fill up. Unless you're always putting 11 gallons into your tank, you might be getting artificially low mpg figures by dividing by 11.

The downside to this method is that unless you're filling your tank to exactly the same level every time you fill up, there will be some variation from tank to tank. However, it does average out, and you get a very accurate average over time.

B18C5-EH2

Like clockwork if I run the needle to below "E" and fill it up until I literally hear the gas coming up into the filler neck I cannot get over 11.1 gallons of fuel in it.

This is why I use "11" as my capacity figure - it's the same every time if filling up from below "E" to spilling-out full.



Too often people use the capacity figures either listed, or what they think their tank holds rather than averaging how much fuel it takes to fill it up each time. I see people using "10" as their capacity when in fact the listed capacity if 11.9 gallons.

blackmugensivic

I get between 32-34 mpg and I'm boosted, I drive 70 miles a day for work

I divide the amount used to filled up the tank by how many miles are on the trip meter

rkcarguy

98 DX Sedan Stock 320 miles/9.8 gallons =32.6MPG mixed driving
Best 40mpg in seattle traffic(~40 mph steady and slow).

93 LX Sedan B20B LS Trans = Almost same ~32 mpg
" " D15B7 =33mpg, Best 42 mpg Elensburg-Renton I-90

Big fan of "same energy to move the same weight" as long as the gearing is decent.

jmk64

After a fresh tune-up I got 38mpg with my 2000 civic EX.
With my 97 Accord V6 it was a very consistent 25mpg.
Both with mixed driving but mostly highway.

djslim23

Boost does increase mpg's as long as you're not on it.

That's how I do it too, but convert from km's first

CFiannotti

95 DX Coupe, D15b7, Auto. 33 MPG normal daily to work route. around 8.7-9.2 gal / refill

drkstrs24

93 Dx Sedan with b18b1, 32 city 40 highway

raidacaipo

h2b in civic hatch = 25mpg Highway while driving like my grandma

300whpej

thats what i always do. last fill up took 9.8xx gallons and i got 192 miles out of it (90% or more highway). my number sucks most of the time because my tach sits between 3.5k-5500...sometimes the all mighty 8k. city driving i can milk about 220 to a tank, and a normal fil up is 8.5 gallons.

EJ8zzzz

Stock coupe with d16y8 got around 26-28

ohsnapzafingcu

iTrader: (2)

I only saw 30's when i had a Y8 constantly stomping on it everywhere. Then I got an LS swap and barely got high twenties after I got it tuned.. Now my cr-v gets 23-24

wolfmanxx5150

1993 civic dx hatch 5 speed - all stock, swapped in; JDM D15B with tranny, (installed 5/13/2010, approx 35000 miles on engine), I/H/E/chipped ecu. (ecu is chipped P28 with P72 base map, vtec is set at 4348rpm, redline at 8000rpm). I drive 78 miles a day to work and i do 60-65mph (2900 rpm @ 65 mph) the whole way on mainly state highways. my driving is 80% highway & 20% city. I run Amsoil in all my cars and motorcycle. The worst I got was 30.45mpg, I did this on purpose to see how bad it would be. every light i would take off like a bat out of hell and do 70 mph plus to work. The best - 42.71mpg I took it real easy for the tank full (grandpa style), didnt get much over 60mph. My friend who installed engine said it pulls as hard as a stock B16A3 ( he has one in his 1994 dx hatch) I have 185/60/15 yoko avid trz's. HERE ARE MY NUMBERS;

MILES MILES GAL. MPG $ P/GAL OCT
35000 0.1 0.100 1.00 $0.100 92 $0.01 $0.01
35222 218.0 6.434 33.88 $2.879 92 $18.52 $18.52
35223 176.7 4.371 40.43 $2.859 92 $12.50 $12.50
35512 289.0 8.529 33.88 $2.599 92 $22.17 $22.17
35872 360.0 10.422 34.54 $2.899 92 $30.21 $30.21
36154 281.7 7.265 38.77 $2.889 92 $20.99 $20.99
30038 236.0 6.235 37.85 $3.059 92 $19.07 $19.07
30281 243.0 7.974 30.47 $2.959 92 $23.60 $23.60
30524 243.0 5.689 42.71 $2.869 92 $16.32 $16.32
31270 746.0 19.785 37.71 $2.819 92 $55.77 $55.77
31538 268.0 8.801 30.45 $2.789 92 $24.55 $24.55
32168 630.0 18.000 35.00 $2.889 92 $52.00 $52.00
32526 358.0 8.823 40.58 $2.949 92 $26.02 $26.02
40028 336.6 9.346 36.02 $2.969 92 $27.75 $27.75

cadwiese

about 28 city and 32 highway in a 93 civic si with b18b and 5zigen catback

93h2beg

1991 crx hf- gutted- bone stock, from napa ca down to huntington beach ca- 51 MPG!!!! all freeway driving.
was t-boned in HB. car is done.

now 93 h2b eg with type r lsd trans- 24-26 MPG on premium gas. mostly around town and ill be in 5th by 40mph. I have a lean tune for light part throttle to help with in town mpg- mostly what i drive. on the freeway at 70 MPH- im in vtec in 5th.... low vtec engage, but also high rpms-

93b18civic

x2

Worst i have got is 39.5 with letting it warm up for 20min every morning (-20 degrees out)

Best is 54.7 on the way to my sisters, all highway.

True average --> 46.5mpg city/hwy mix