DX/LX/EX: Your Gas Mileage

[m1k3]

mine would be a lot better if i didnt drive like a jack ass

[psyshack]

Originally Posted by Intrepid175

I'd be interested in seeing the results you get. On another note, since VTEC on the R18 is geared totally toward improving fuel economy, and, it only activates under a finite set of conditions, I'd be interested in figuring out a way to know whem the car is running on the economy cam profiles, even though I'm not having economy issues. I just think it would be interesting to know what percentage of my driving the car is operating in that mode.

I was thinking maybe we could tap into whatever electrical line that goes active when VTEC is active and have it turn on a small LED in the dash or something. The trick is figuring out what circuit to use. Having read a number of these threads about R18's returning poor economy, I've also been wondering if those car's are ever seeing the economy mode in VTEC. If VTEC isn't working for some reason, I'm not sure that would throw a CEL. It would depend on what the nature of the problem is. Just a thought!

I'm not that electronically minded so anyone care to take a stab at that one?

Drive Safe,
Steve R.

I had a chance to do some test concerning the 1000 to 3500 rpm vtec/semi atkins head function over the holiday. As we know in the rpm range under low load. The R-18 is suppose to be operating at 1.5L and not 1.8L.

I had to make a run to the store and the car was warm. My Civic is also a 5MT so it made doing this test easy. I also used my scanguage to give me the instant mpg.

One level ground, no load, no wind and temps in the mid 50's. I drove the car at 900 to 1000 rpm in 5th gear. Just off idle. The scanguage showed 36 mpg as long as I didnt move my foot on the throttle. I then sped up a tad to 1300 rpm and held it steady. MPG was then a stable 57 mpg. This was repatable going and coming. In my mind that proves the lower end of the vtec operation. Testing the top end of the rev range could be more challenging.

psy

[Intrepid175]

Originally Posted by psyshack

I had a chance to do some test concerning the 1000 to 3500 rpm vtec/semi atkins head function over the holiday. As we know in the rpm range under low load. The R-18 is suppose to be operating at 1.5L and not 1.8L.

I had to make a run to the store and the car was warm. My Civic is also a 5MT so it made doing this test easy. I also used my scanguage to give me the instant mpg.

One level ground, no load, no wind and temps in the mid 50's. I drove the car at 900 to 1000 rpm in 5th gear. Just off idle. The scanguage showed 36 mpg as long as I didnt move my foot on the throttle. I then sped up a tad to 1300 rpm and held it steady. MPG was then a stable 57 mpg. This was repatable going and coming. In my mind that proves the lower end of the vtec operation. Testing the top end of the rev range could be more challenging.

psy

Intersting! What's this scangauge you're talking about?

Thanks,
Steve R.

[psyshack]

Originally Posted by Intrepid175

Intersting! What's this scangauge you're talking about?

Thanks,
Steve R.

Just google scanguage... It will all become apparent.

[Andrei'sCivic]

I drive an 07 Honda Civic LX with manual transmission. Its approaching 2000 miles on the odometer.
I drive a lot of city, but I cruise and I shift at around 3000rpm.
My fuel economy seems to be getting steadily worse. My best was I believe 26-27 mpg combined with more city driving. I am now averaging 24mpg.
I am angry, and I have complained to the dealer twice. First time they performed an electronics test, no problem was found. Second time they told me that 3 techs would drive my car each for 30miles and they would observe the fuel economy. There was a misunderstanding and after leaving my car at the dealer the whole day they told me they only performed the electronics test. I was like WTF!! All f#cking day for just that, and they lacked communication.
They went so far to assume blame on my 18" Volk Racing TE37 wheels with 225/40/18 tires which are only 5-6mm (1/5") larger in overall diameter than my 205/55/16 tires. They called them oversized wheels. I was thinking what do you think you get when you buy 18" HFP wheels? Worse!! They claimed my exhaust was aftermarket, I told them its only a oem muffler from an 06 Si.
I think almost every person with an automatic transmission is getting much better fuel economy than a large number of those with the manual transmission Civics.
I get an average of 24mpg when I drive normally as always. I am taking steps to getting the dealer to perform different tests. Maybe in the future they will offer me an Si at a discount. I met another guy at the dealer he owned a blue Si with the HFP suspension and muffler. He said he was getting 25mpg average, combined in his 06 Civic EX I believe. And he said he traded up for an Si, which also gets 25mpg.

[AbsoluteGG]

I think the autos are rated at 30/40 while the mts are 30/38 mpg. i find it funny how the dealer was looking for anything to blame the bad milage on.

[fstrnu2]

my worst was 25mpg i avg 32mpg town and hwy best mileage was my trip to denver got 44.1 mpg on one stretch

[cojaro]

W00t. got ~28mpg (320miles on ~11.5 gallons) and that included some very spirited driving and nearly all city (maybe 10-15% highway).

R18 fuel economy ftw!

[crableg85]

Originally Posted by civicowner

i get 23.5 in all city driving, and 33 mpg in all highway,.

does the mpg go down on the cold weather or on hot weather???

i belive it it goes down in the winter

[truflip]

my first tank got 464km.. yes.. 464! thats pushed all the way down to the reserve tank (no bars at all left) WTF right?

yea.. thats 278miles on a 13gallon tank...... WTF RIGHT?? its winter.. its not cold at all here.. i let the car 'warm up' for a minute.. drive slow.. etc...

help?

[Russ78Atl]

2007 EX Coupe with A/T; had the car 2 months and just reached 1900 miles. I drive 90% hwy/10% city and have averaged @ 30mpg. Wishing to be closer to the 40 range as the window sticker says, but we shall see...

[cojaro]

Originally Posted by Russ78Atl

2007 EX Coupe with A/T; had the car 2 months and just reached 1900 miles. I drive 90% hwy/10% city and have averaged @ 30mpg. Wishing to be closer to the 40 range as the window sticker says, but we shall see...

That's odd, because I've gotten 38mpg on a trip that was nearly all highway. I can't see a reason why you're getting 30mpg with 90% highway. What speed are you going and do you use cruise control?

[gary79]

I do mostly city driving in my Ex auto coupe and 25 mpg is about as good as it gets, i don't drive hard, no jack rabbit starts. I think the EX's addl equip puts the weight up, so the car isn't going to get 30 in town. on the highway I consistently get about 36 mph.

[Kidekat]

I get a consistent 400-450 miles per fill up. This is driving the car down to 2 bars.

[truflip]

how do u do that =( what octane level is ur gas?

[Janizary]

I'm going to have to hurt all of you....now you are just taunting me.

EDIT: Wow, that's really out of context since the thread got merged.

[tennisfan16]

you people drive janizary crazy with gas threads, i don't know anything about him except his is crazy about all civics and their mpg.

[redbug2]

32-33 50/50 driving. Long trip averaging 65mph 38mpg, very happy with that.

[myhondacivic]

I have an ex coupe manual and I get about 33mpg. That's because I have to go thru at least 10 speed bumps from my apartement coming in and out and them a few lights and minor hill. I'm happy though b/c i don't have to spend that much on gas. YAY!

[truflip]

how much mileage do your cars have? does the mpg count get better n better the more u drive the car and 'break in'?