So its an 03 CL-S 6 Speed with ~95,000 miles and usually from full to empty I make it about 320 miles. I think this is low, is it? and if so any thoughts as to why it would be low?

 

You're getting hella more MPG than mine..sometimes I get ~240 form full to empty...I don't even speed that much...at MOST, I get ~320ish..haha....

 

How many gallons or liters are you filling in the tank?

 

yes please what he said

 

Our tank is about 17 gallons, I get about 360 highway miles pushing at 80-85 mph.

 

What? With all my mods Im still getting better mileage then you guys.

400miles on 15 gallons every fillup, and thats mixed highway/city.

The best I got was 31mpg, and the worst was 22mpg. I averaged 26.5mpg since the day I bought the car (I keep all the reciepts, Im crazy like that).

 

go to my garage and look at my tl-s (you may be a little bit higher cause of it being a cl) it has my last 6 fillups (since i got it) (and it has 103k) but anyways about 23-25

 

22-24 on Auto CLS, no beating.

 

Hm...I seem to be getting much less..haha...what could be the cause of such low MPG? Not enough trans fluid?

 

miles per tank is a very inaccurate way of measuring fuel consumption, its like that thread that said 170 miles at half tank or something.

you need to fill the car full
reset trip odometer
fill up full again at next time you need gas
divide miles used by gallons of gas bought

and heres the link to my graph of fuel consumption for my CL.
https://acurazine.com/forums/index.p...&vehicleid=143

 

I agree with that method, and thats how Ive been doing it.

 

The most I got was like 360 to 15 gallons
but most of the time its 280-300 to 14-15 gallons
so I guess i average 20-21 MPG 60HWY/40CITY

 

the tank is 16 gallons how did u fit 19 gallons...
I ran my car till it was out of gas and got like 16.2 galllons in it

 

You werent out of gas, the tanks capacity is 17.1 gallons. They absolutely lowest I took my tank was 16.5xx and the car was difficult to start and I thought I was going to run out before I got to the gas station.

Good catch regarding 19 gallons. Maybe the station he was using has uncalibrated pumps?

 

I just updated my MPG tracker:

https://acurazine.com/forums/index.p...s&vehicleid=96

Disregard the first fillup on 8/20/09, I fat-fingered it.

 

maybe get a mod to delete that one

and holy shit you really updated it

mine is every tank i have filled (only 6 tanks so far) since i have only owned my tl-s for a month or so

 

Lol, I have all but 3 receipts since I bought the car (2 in NY, one in Jersey). Im anal like that. I also omitted the mileage that wasnt a full fill up (there were a few).

I usually collect the entire months worth of gas receipts in my center console, and every time I fill up I write down the mileage I had at the time. Then at the end of the month I staple it together and put it in an envelope with the rest of the gas reciepts. Its part of a huuuuuuuuuuuge binder of receipts.

I know, Im a receipt whore.

 

i'm kinda the same way with the receipts so i can check my mpg every tank (i go in if they don't print out) except for i don't staple them and save them

BTW: you will be able to detect a problem with your car before the check engine light will ever come on, cause you will see an increase in fuel comsumption, which is the first indictation there is a problem
the computers in today's cars can cover up ALOT of problems with their adaptive learning and such, and it is easier to make a rich running engine run smoother

also i would have done the partial fillups too, but you did it the way you wanted too

 

So what could those problems be?

 

Agreed. These ECUs are constantly adapting to conditions, so as long as things arent terribly screwed up, (ie within the ECUs adjustment parameters) it will "fix" itself.

Then my MPG numbers wouldnt be accurate

 

What sort of driving do you do? Alot of City driving?

If you look at my MPG table, most of the time I was getting less then 25mpg, I was in NY. Driving 5 miles then shutting the car off was a big cause for that. In VA, my shortest commute is 15 miles. Hell, the food store is 5 miles from my house, and the nearest gas station is 3 miles.

The first things to look at if you are getting bad gas mileage is your air filter and your spark plugs. The simplest things can cause bad mileage. Do an oil change. Go with thinner oil. Are your tires properly inflated?

Once you know all your fluids are topped off and everything is to spec, then you should start looking deeper. One cause for bad mileage can be valves being out of spec. When they are out of spec you wont get a CEL.

Also, a hole in you exhaust will not only create a disgusting noise, but it will also contribute to higher fuel consumption.

 

X2, except for maybe the thinner oil, gives less protection then

depends on where in the exhaust is, before the HO2S senser will give false readings to it, but after it is just noisy and annoying as hell

Also our exhaust systems geneally last the life of the car (but we replace windshields every couple of years and the paint on the front end can kinda be chipped to hell), like my bosses wife's car which is a 93 toyota camry V6 with 280K still has the oringional exhaust on it with absolutly no holes and just surface rust

 

True, but after it can still cause some issues regarding turbulence, so the exhaust isn't flowing as efficiently as it should. Buts its mainly noisy

 

Nice MPG char civicdrivr, and i thought i was the only one entering in MPG info regularly, your kicking my ass lol

 

I should change out the spark plugs and check on my airfilter/intake. My driving is about 80city/20hwy, but it should atleast be in the low 20s I suppose...

 

Lol, I didnt even know we had a MPG chart until you posted it. I just did it today when I was bored

 

When Im in NY I do 90% city driving. I barely get out of 3rd gear, and I gas it hard, and I still get 21-23 there.

Check you spark plugs first. I forget what the gap should be, but make sure they are within spec before you drop the $$ on them.

 

haha cuz, i was about to say...

 

I Average about 15-16mpg hahaha. Worst I have got was 14, best was 22.

 

Jesus. I know its possible to get that low, but average? Thats crazy.

 

Yeah but i also mainly just do city driving.

 

or he only knows how to push the throttle to the floor (WOT) or completly let off of it and doesn't know that you can just push it half way
and i wounder how fast he goes through brakes, cause with his driving i might
btw, posting early enough in the mourning with a little too much ,

 

Actually, i drive pretty normally, usually just shift at 3,500rpm. But sometimes i just gun it and redline it...

 

then you must do alot of really short trips or something to get that bad of gas mileage
or need to lose some weight out of the car like pushing your FAT GF out
or you need to empty out your trunk of all your shit

 

Your right about me taking short trips with it. I have never had a fat GF thank you very much . The inside of my car is spotless, i don't even keep a crumb in there, just all of the stock components without trash.

I don't use my CL that much because i want to keep the mileage low. I guess i like to speed in it because i don't drive it very often

 

is it me or does it seem like that guy is hating on you a little?

 

aye ur not the only getting low milege im about half way on my tank and all ive gone is about 120 miles so far
2003 CL Type-S Anthracite
CAI 58,000

 

I guess you and I seem to be the only 2 people that drive the car like it was meant to be driven

 

Lol. I do many spirited runs. My commute consists of frequent 100mph highway jaunts, high rpm pulls, and when Im in the city I drive like a NYC cabbie.










Thats probably why my insurance is so high

Ive got a quarter tank left and Ive got ~300miles on the tank. Ill fill up tomorrow.

 

You do MANY sprited runs and yet u STILL have 300miles + quatertank left?!?!? I envy you....I drive conservatively and I get 300 if I'm lucky...