: Fuel Economy



Connectcut CTS-V
04-23-09, 10:31 PM
Just wondering what others here are seeing for mileage. I have about 1700 miles on the clock now and have an average of 15.7 MPG. I drive about 50 miles per day of which probably 40 of that is highway at 75-85 mph. I undestand that I shouldn't expect much from a 550 h.p. car but 15.7 seems kind of crappy. Have any of you guys with mods noticed any increase in MPG?

Razorecko
04-23-09, 10:40 PM
Just wondering what others here are seeing for mileage. I have about 1700 miles on the clock now and have an average of 15.7 MPG. I drive about 50 miles per day of which probably 40 of that is highway at 75-85 mph. I undestand that I shouldn't expect much from a 550 h.p. car but 15.7 seems kind of crappy. Have any of you guys with mods noticed any increase in MPG?

booohooo i have 2k miles and i'm getting 13.9mpg :mad2:

AuPanda
04-23-09, 10:42 PM
Still don't even have 400 miles on the V2 yet but fuel "economy" seems like a strange way to measure gallons per hour.

cmicasa
04-23-09, 11:16 PM
With 13 city/19 highway EPA your combined should be actually 15 MPG FLAT. U are getting better than EPA estimates:)

Now compare that to the M5's 13MPG combined and U will see that U are actually doing damn good, especially considering that U have 56 More Ponies than that car. BTW.. your Fuel economy will actually improve after about 5K. :thumbsup:

Personally... I never considered driving it as a Daily Driver. I have a G6 3.5L for that... and it gives me about 34 on the Highway and 21 in the city. The CTS-V is a SUPER-CAR... Fuel Eocnomy is not why U would purchase one of those:cookoo:

OldDrummer55
04-23-09, 11:22 PM
Cruising home from the dealer at 70 mph I was getting "instant" 20 on flat highway. Check out Wait4Me's Utube section. He has one video where he installed mods and was getting mid-20s at 60 mph.

Razorecko
04-23-09, 11:41 PM
With 13 city/19 highway EPA your combined should be actually 15 MPG FLAT. U are getting better than EPA estimates:)

Now compare that to the M5's 13MPG combined and U will see that U are actually doing damn good, especially considering that U have 56 More Ponies than that car. BTW.. your Fuel economy will actually improve after about 5K. :thumbsup:

Personally... I never considered driving it as a Daily Driver. I have a G6 3.5L for that... and it gives me about 34 on the Highway and 21 in the city. The CTS-V is a SUPER-CAR... Fuel Eocnomy is not why U would purchase one of those:cookoo:

lifes too short not to daily drive this ride :thumbsup:

62Jeff
04-24-09, 12:16 AM
I have about 1,300 miles on mine.

When I had about 450 on it, I averaged 19.5 over 400 miles of highway driving.
http://www.cadillacforums.com/forums/1809071-post4.html

However I average about 11 to 11.5 going back and forth to work each day, with no highways or freeways on my path.

neuronbob
04-24-09, 01:27 AM
I have a bit over 1500 miles as of today and my average mileage the last three tanks is 15.5. This is in mixed 50-50 freeway/city driving, and even includes some goofing off like onramp launches in M mode. I expect the mileage to improve as the engine ages.

I agree with the comment that life is too short to daily drive this puppy, that's why I bought it. It sure isn't going to be a garage queen like my S2000.

pmsteinm
04-24-09, 01:13 PM
Mine is 16.5, mostly interstate, no traffic. My V1 on the same cycle was 18.9...not bad for 40% more power. Before when I lived closer to work and did no interstate, the V1 was 13.9...so I can only image what the V2 would do...

Luna.
04-24-09, 01:54 PM
booohooo i have 2k miles and i'm getting 13.9mpg :mad2:

:yeah:

wait4me
04-24-09, 02:24 PM
Im averaging around 24-26 now with mods. The more i have been adding to it, the higher it gets it seems. Kinda like the car is rewarding me for giving it attention. :)

hound dawg
04-24-09, 05:50 PM
I received my car on the 23rd of December. I have driven over 17,000 miles and the milage did improve with age. I am now getting 17+mpg.

neuronbob
04-24-09, 07:18 PM
Im averaging around 24-26 now with mods. The more i have been adding to it, the higher it gets it seems. Kinda like the car is rewarding me for giving it attention. :)

:worship:

Thank you for giving this car attention. Maybe it's time for me to mod if it will improve mileage that much. I'm shocked anyone is getting that kind of mileage out of this car.

Edit: Jesse, of all the mods you made to your V2, what would you say is the one that improved mileage the most? The tunes or the parts? That would help a lot of people here. I definitely don't worry about the mileage in this car, but a significant improvement in mileage as you describe certainly cannot be ignored.

vperl
04-25-09, 12:25 AM
On my snarky road trip home from Superior Cadillac over 2475 miles, I averaged about 19.9

That is indeed snarky

rickp
04-27-09, 10:43 PM
I am also interested to hear Jesse respond to the mileage question.

tedcmiller
04-27-09, 11:25 PM
I have less than 1000 miles on mine and I have never reset the average MPG reading. I would guess that about 85% or that driving has been around town. Mine shows 12 MPG for this scenario.

ericpd
04-27-09, 11:30 PM
I'm getting between 15-16. Just parked moments ago and had 15.7. It's been up to 19 once or twice after highway jaunt. Not quite 1k yet.

Caroutisine
04-28-09, 12:07 AM
I have just over 1K mikes, avarage 14.3 in mixed driving.

ericpd
04-28-09, 02:47 AM
I have just over 1K mikes, avarage 14.3 in mixed driving.

Is your V auto or manual? I'm assuming the auto is a little more thirsty.

Caroutisine
04-28-09, 08:57 AM
Auto.

darjae
04-29-09, 01:11 AM
I've got 8200 miles and have averaged 15.7 mpg since I picked it up from the dealer. I've had 2 long road trips (500 miles 1 way) and have destroyed the token ricer from time to time. Not too bad. I was getting 16 in my GTO.

GMX322V S/C
04-29-09, 04:00 AM
Im averaging around 24-26 now with mods. The more i have been adding to it, the higher it gets it seems. Kinda like the car is rewarding me for giving it attention. :)I'm looking forward to seeing what I get with your stock handheld tune on my next long road trip Jesse. On my last trip, I was getting right around 20 on level stretches of highway, typically cruising around 75-80.

Hogg
04-29-09, 11:14 AM
These GEN 4 engines (and GEn 3 engines for that matter) take many miles to FULLY break in. Best MPG and best 1/4 et's/mph will be apparent sometime after 5000 miles.

peace
Hog

Razorecko
04-29-09, 12:35 PM
yea i heard full breakin was around 5-6k

neuronbob
04-29-09, 01:53 PM
I'm looking forward to seeing what I get with your stock handheld tune on my next long road trip Jesse. On my last trip, I was getting right around 20 on level stretches of highway, typically cruising around 75-80.

Please do keep us posted about this.

I'm waiting to hear from Jesse about how he's able to hit 24-26 mpg as well. If the tune not only improves shifts (we know from user reports that it does), but also improves mileage, it will only cause me to purchase the handheld faster than planned.

Again, I didn't buy the car because I care about mileage, but if a simple tune improves mileage that much, it will pay for itself VERY quickly in this car.

NeedCTS-v
04-29-09, 07:00 PM
I pulled an average 17-18 mpg on a cruise to San Antonio this past weekend. This was with 4 people crusing in 5th/6th at around 70.

Vlakaz
04-29-09, 11:56 PM
I don't know what everyone is complaining about, I get great fuel mileage.


http://i704.photobucket.com/albums/ww46/vlakaz/1238.jpg


http://i704.photobucket.com/albums/ww46/vlakaz/1239.jpg

Ok, only on downhills with the wind at my back... but still.

Florian
04-30-09, 12:19 AM
Personally... I never considered driving it as a Daily Driver. I have a G6 3.5L for that... and it gives me about 34 on the Highway and 21 in the city. The CTS-V is a SUPER-CAR... Fuel Eocnomy is not why U would purchase one of those:cookoo:

amazing. :thepan:

F

FreddyG
04-30-09, 12:25 AM
My guess is that Jesse's tune makes the mileage go up.

He knows all of the computer tweaks/settings to make the engine run at peak efficiency and that's what it's all about.

An internal combustion engine is nothing but an air pump and the more efficiently you can get it to run, the better both mileage and power will be.

Just my guess, but hopefully he'll drop in and fess up! :cheers:

GMX322V S/C
05-07-09, 05:31 PM
Please do keep us posted about this.

I'm waiting to hear from Jesse about how he's able to hit 24-26 mpg as well. If the tune not only improves shifts (we know from user reports that it does), but also improves mileage, it will only cause me to purchase the handheld faster than planned.

Again, I didn't buy the car because I care about mileage, but if a simple tune improves mileage that much, it will pay for itself VERY quickly in this car.Been running w4m's max perf tune for a little over a week now. With cruise set to 75 over the same stretches of level freeway where I was getting an indicated 19-20 mpg stock, I am now getting 22-23 mpg. I get a solid 22 at 80. After I installed the tune, I reset my average mpg for the first time since purchase 4 months ago; it was at 14.9. Guess we'll see where I end up in another 4 months...

Auto, no other mods.

neuronbob
05-07-09, 08:14 PM
Thanks a lot! That's very helpful.

rickp
05-07-09, 09:37 PM
Thanks for sharing that improvement. Do you have any idea what it does for city? I know there are lots of variables for "city" but any indication of your experience with it would be helpful. Dont know if I can wait a month!! They might be gone by then.

GMX322V S/C
05-07-09, 10:05 PM
^ Been jumping on it a lot and playing with Sport mode, so it's hard to say :D I've only burned through a couple of tanks since I put it in and all I can say is it doesn't seem to be any worse. In fact, it's probably better (see the "less soot in the tailpipes thread"), but I can't prove it. FWIW, despite all of the playing I've done in the last week, my ave. mpg is currently exactly where it was before I reset it: 14.9. I didn't report it before since, as you said, there's so many variables--and it's been such a short sampling period.

s4ologist
06-22-09, 02:54 PM
Thought I would update on the new setup (Hennessey CAI, AR Headers, tune) with respect to fuel economy.

I was averaging 13.9 (mostly city driving), now, after 2 tanks, I am averaging 15.3 with the same driving. I have no idea what a long HWY trip would look like, though. Now all I have to do is drive about 150,000 miles at $3 per gallon to break even $$-wise on the mods!

RWFJR
06-22-09, 05:04 PM
4200 miles...18 MPG average...

Low_ET
06-22-09, 08:28 PM
I have 1000 miles so far. I am keeping accurate records of my mileage. I have the same drive every single day. Every tank is within 0.15 mpg of these numbers:

16.8 mpg on 10% Ethanol fuel.
17.5 mpg without Ethanol (from my local BP station).

JFJr
06-22-09, 09:18 PM
I have about 9,700 miles on it. My city mileage is in the mid-to-upper teens and my highway mileage at 73 mph (about 2,150 rpm) is a little over 21 mpg. I expect to get another 1-2 highway mpg after 20,000 miles. As you can see, I have a manual transmission, but wouldn't consider any type of "mods," IMO a waste of money and could cause warranty problems.

OKC_CTSV
06-22-09, 10:12 PM
I have about 3900 miles on mine and I'm about to do the first oil change. I have W4M tune, CAI, 2.55 pulley, throttle body, and I just went to dallas a 450 mile round trip at 75 - 85mph and averaged 21.2mpg. was averaging 19.5.

jskv12
06-23-09, 06:59 PM
I have only filled up twice so far and no long trips yet so the mileage is a mystery. I was surprised to see the EPA figures especially when compared witht he more powerful Corvette. Maybe it is weight issue?
Can someone please direct me to these mods being dicussed here?

Jeff

Buzduz74
06-24-09, 10:38 AM
On my snarky road trip home from Superior Cadillac over 2475 miles, I averaged about 19.9

That is indeed snarky

70 to 80mph produces 16.9 mpg 50/50 about 14mpg

W4Me air intake and mild flash with Corsa's
Buzz

vperl
06-24-09, 11:05 AM
70 to 80mph produces 16.9 mpg 50/50 about 14mpg

W4Me air intake and mild flash with Corsa's
Buzz

*******************************

Yep, Seems 19.9 MPG

is a good thing, on my very Snarky trip.....