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I have a new civic (5 weeks), and so far am disappointed with my fuel mileage. The first tank went 460km before i needed to fill, but I am not quite sure just how full it was. The next few tanks i bought all had 10% ethanol, and I have barely been breaking 400 km on a tank, with close to 40 litre fills every time. This is not great. My last tank I bought did not have any ethanol, and I am now at 480km, and I still have about 1/5 of a tank, so I can't help but think that the ethanol is impeding my mileage.... I will experiment with this a little more. Temps have been in the low 20s (celcius), between 70 and 80 in american... I have been pretty gentle on my new car, and about 20%, and sometimes more, of my driving is on the hwy. I am at sea level in Vancouver, Canada.
In comparison, my F250 power stroke diesel (manual) goes almost 400km on $35 worth of diesel, or about 37 litres. With gasoline at $1.10, it appears to be cheaper to drive my F250... I am shocked... I hope that I will be able to consistently get well over 500 km per tank in the car, or I will continue to be disappointed.
Being new to the forum, I have not had a chance to read a lot of posts, and am curious if other people are getting these kinds of results?
Before I had bought the car, I pointed out to the salesman that I was seeing on the internet that the ratings were about 26 city, and 36 hwy, and asked why the discrephancy between that and the sticker on the car window saying 50mpg on the highway. He took me to the car and pointed to the epa rating on the car window of 50mpg and said i should be able to get that... I am not even close... nowhere near, and even with some hwy driving, I am even well below their city only rating. I drive very nice; no jack-rabbit starts, and i hardly speed.
The car drives nice, and feels better over-all than my 2001 civic, which I also bought new. I am otherwise happy with the car.
50mpg on the sticker? that had to be the hybrid model civic. and even then most people dont get that good in real life. and yeah the ethanol will reduce gas mileage. its mostly for cleaner emissions not mpg.
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This is an interesting thread, but to everyone out there trying to check their mileage, you need to start with a full tank and get as close as you can to empty before refilling and calculating.
With a small tank to begin with on a civic, if you were to fill up with more than 1/4 of a tank left, you could easily be off by 10-20% on your numbers. Why? The temperature, gas pump (might turn off earlier or later), angle (take more or less gas) of the station etc. could easily allow the amount of gas your car takes to fill to vary enough to throw off your numbers. Better yet, keep track over a long period of time, not just part of one tank.
My Honda lawn mower gets 40 mows to the gallon (I really have a Honda mower).
I got a solid 44 mpg with 3 adults in the car on a trip from CT to VA through PA countryside. This was in late September so it was warm weather but not hot, no a/c on, windows slightlyopen.
I set speedometer at 57 mph for all the highway driving. I average a solid 36mpg all the time, in all kinds of driving, here in Hartford County, CT.
I figured out consumption like Joe6680 did, from the pump and from the odometer.
I have to agree with "gearbox" about the 55mph speedlimit. If my Civic is running at around 1500 rpm at 55mph, it is just sipping gas. I love this car!!!!
I've consistently gotten 42-46 mpg on the interstate for the past 7 years in my 03 EX. I average around 30 in the city. Love the mileage in the car. I think a lot of it has to do with the increased breathability from the Injen RD intake and GReddy EVO exhaust.
__________________ 03 Civic Coupe
Injen RD Intake
Greddy Evo
Re: How to get 40 MPG 
