I have a 93 Honda civic. I get about 27-30mpg when its cold out, but when im highway driving and its warm ne where from 30-40. when my mileage got low a while ago i put in some fuel injector cleaner and that helped a little.

 

97 LX Sedan with 191,000 KM I get 40-42 MPG in the Winter, I expect about 45-47 MPG in the summer. 95% of it is Highway, flat land as well. That and there are no engine / exhaust mods.

 

you know mine sucks thomas. i get about 30mpg if i cruise the speed limits. that's a rarity though. h:

 

I recently measured 42.8 mpg (or 5.5L/100km) with stricly highway. This was measured with 140km using 7.69Litres.

In the city around town it was recently 28mpg or 8.4L/100km with very short trips.

The valves haven't been re-aligned in over 7 years. It's a 1992 Civic DX hatch with 380,000km (238,000miles) on it. It currently leaks a bit of oil from the crankshaft seal (clutch side) and oil pan gasket with hard driving so I lay off the accelerator. I go no faster than 70mph (115km/h) while others wizz by in the SUV's, etc at 140km/h (88mph)!!!

Lately I added molyslip-e additive which promotes better friction. The molybedenum disulphide molecules form a lubricating layer between metal parts. Check it out on the bobistheoilguy.com (http://www.bobistheoilguy.com/moly.html).

I'm hoping for better gas mileage in the city after I re-align the valves soon (maybe this weekend). Can't wait to see the results of my work.

I'm surprised that some of you have such poor mileage on the highway.

 

i got 18 this tank, but I've got cel issues.

 

~27 daily driving
~35 (best) on the highway hauling arse

 

Well, I got the new (used) muffler and dizzy on. and a new fuel filter. The car seems to run better, and mileage appears to be up. We will see when the light comes on

 

18-25 on a stock y8...and yes i do drive it like its hot

 

haha, i was messin around under the hood today, and noticed that my #2 spark plug wire wasn't even pushed down all the way. h:

seems to be running alot better.
hahah

 

I get around 30 - 33 with a y8 with I/H/E and an automatic :uhhok: