: Pleased with gas mileage



popacork
07-03-13, 05:46 PM
Just finished a 2200 mile trip from N. California to Minneapolis via Gillette WY. Overall fuel mileage was 26.4 MPG which I consider good considering the 75 MPH speed limits in Wyoming and South Dakota (drove a bit faster than the limit). Anyone else happy with highway fuel mileage?

4100 miles on the car with 58% oil life remaining. Will have the 1st oil change done when I get back home. Oil level is still good.

Tbbt
07-03-13, 05:52 PM
Thanks for sharing a 'positive' assessment of what a driver can get with a CTS! Of course there will be naysayers piping up too. I also have had similar results when traveling Interstate Highways!

You did a great job of watching your speed, with the passes you climbed, a truly great job!

Thanks, Marv

LastTripToTulsa
07-03-13, 06:26 PM
I've never been disappointed with my CTS' s gas mileage either. My typical commute is mixed highway/city with an average speed of 45 MPH and I get around 22MPG. When I go in long, mostly highway trips I also get in the 25-26 range. You really can't expect much more out of a 300HP engine in an AWD car.

lvdw55
07-03-13, 06:40 PM
I concur....I've always been satisfied with the mpg on both city and highway miles.

popacork
07-03-13, 08:18 PM
Good to hear of other positive results!

akamai43
07-03-13, 08:43 PM
I love the mileage I get on my CTS. it's a great deal better then the 2000 Catera Sport I use to own.

Xav8tor
07-03-13, 11:27 PM
Having had more time now with my CTS 3.6 coupe, I'll take the bait, pipe up, and be somewhat of a naysayer. If I drove it using the techniques of a hypermiler, I could get the 18/27 (21) estimate. In reality, it's been closer to 14.5/24.5 (19.5). Admittedly, I'm not wasting any time getting up to the speed limit, but I'm not burning rubber either. With a 50/50 city/highway split, I can see getting 21, but an 18 MPG avg. in town is not going to happen no matter how I drive it. I seriously considered a V, so I wasn't counting on hybrid-like mileage, but I am a surprised it isn't one or two MPG higher. I usually do a little better than the EPA estimates. The car went through the CPO inspection and a second engine diagnostics test, so nothing throws a code, except maybe whoever is sitting in the passenger seat.

Z71
07-03-13, 11:37 PM
My '09 recently turned 30,000 miles and its averaging 24.0 mpg combined per the DIC as I have never reset it from day one. Mostly rural drving, no stop lights or express ways around here, stay under 60 mph. Only gas I use is Murphy 89. Other stations are 10-15 cents more.

Tbbt
07-04-13, 08:49 AM
Coupes have a lower gear ratio, than even AWD, so your mileage will differ.

rddd1962
07-04-13, 09:55 AM
I am very happy with my
mileage. Much better than the 07 3.6 I had. Avg according to the DIC is 22.4 on flat Hwy I avg 27- 28 on the Hwy in the hill and mountains I see 26 -27. I am usually at 75-78 on the Hwy. 32k since I got it last Aug. Now has 60k on it.

xCCTer
07-07-13, 01:42 PM
I have to say I was always surprised by the numerous threads about crappy gas mileage and excessive oil consumption.
My 2008 CTS 3.6DI RWD auto coupe has 59k miles on it and has always gotten just under 21mpg combined driving.
I installed an RX catch-can (after reading numerous posts here) which has never had one drop of oil in it, and it uses about 1/2 a quart of oil between 5k mile changes which I do myself.
I do not drive it like I stole it, but I don't drive it like an old lady either. It definitely sees revs in the 4500 range several times a month. The ticking of the DI injectors is barely audible at idle with the hood open.
I put a bottle of Lucas fuel treatment through it every couple months.
Mark

dreiloft
07-07-13, 05:16 PM
I have to say I was always surprised by the numerous threads about crappy gas mileage and excessive oil consumption.
My 2008 CTS 3.6DI RWD auto coupe has 59k miles on it and has always gotten just under 21mpg combined driving.
I installed an RX catch-can (after reading numerous posts here) which has never had one drop of oil in it, and it uses about 1/2 a quart of oil between 5k mile changes which I do myself.
I do not drive it like I stole it, but I don't drive it like an old lady either. It definitely sees revs in the 4500 range several times a month. The ticking of the DI injectors is barely audible at idle with the hood open.
I put a bottle of Lucas fuel treatment through it every couple months.
Mark


My 2008 CTS 3.6DI RWD auto coupe?

MaxBuck
07-08-13, 11:02 AM
So far I'm getting about 21 mpg in mostly suburban driving.

ctspremium
07-08-13, 07:54 PM
I drive a 2013 CTS Premium with the V-6 (318), DI Coupe. City/Hwy mix pretty steady @ 19.4 mpg and on trips it gives around 28 mpg. I do not "Baby" this vehicle, nor do I do "Burnouts". It is driven like it should be. I suppose if I stuck strictly to posted mph, I could do even better, but I might get run over by the "crazies". So far, a great vehicle. Our 4th Caddy in 12 years, and all different models. We do miss our '03 SLS though.

xCCTer
07-10-13, 11:39 AM
My 2008 CTS 3.6DI RWD auto coupe?

Sedan. My bad.

CTSCHICK
07-11-13, 07:16 AM
16-18 city & 22 highway based off of comparing actual refills and what was used in between because I never go by the DIC MPG calculations.

HurstGN
07-12-13, 06:27 PM
I was getting rather low mileage until I found the inner front tires were wearing out far faster than they should have. I got a 4 wheel alignment and my mileage (combined) came up to about 20.2 (per the DIC, reading an average speed of 33.x)

Over the holiday weekend, we took a trip from Pittsburgh PA to Norwalk OH. I reset everything as I got on the highway and we made only 1 stop at a rest area along the way. The highway only part gave 28.5 (per the DIC, reading an average speed of 66.5). I was usually doing the speed limit to 5 above the speed limit, but there was a bit of construction in Ohio, and the troopers were very active in writing up "customers". So I did back it down in the construction areas. Direction didn't matter as I got the same returning to PA.

TomFont
07-13-13, 10:28 AM
I've put about 2500 miles on my recently purchased CTS-4 with the 3.6 (22k miles). My normal commute is about 65% highway and I'm only squeaking out 19.5 MPG and I don't have a heavy foot. I'm a bit disappointed because my 2006 AWD Passatt with a 3.6 is only about 300 pounds lighter and got about 26 MPG on the same commute, but to be fair, it required premium gas. I'm going to install a K&N stock replacement air filter. Any other suggestions or thing to check?

Tbbt
07-14-13, 11:24 AM
Tomfont,

You didn't say what model you have, coupes have a lower final ratio, it can make a difference.

What tire pressure are you running? Again, makes a difference. Hills? Try driving with your Driver Information Center in the instant mileage mode and watch how much difference there is when going up hill, taking off from a light, etc. It's amazing how much little things do make a difference.

Welcome and Good Luck, Marv

C "T" ess
07-16-13, 01:29 PM
:devil: I say. Everyone knows CTS's get crappy gas mileage.:histeric:

HurstGN
07-17-13, 01:15 PM
:devil: I say. Everyone knows CTS's get crappy gas mileage.:histeric:

:lies: Speak for yourself...I didn't know that when I bought mine.

It's now better than it was originally, so I'm learning to live with it. Now if we can get gas back to a buck a gallon I'd be happy! No lie, yesterday, I saw 1 gas station go from $3.53 to $3.65 in less than 4 hours, and on my drive to work, a station went from $3.59 to $3.61. Gasbuddy reported in the middle of the day, it went up again to $3.65. On the way home 9 hours later, it went up again to $3.69!!

It's getting brutal to be a CTS owner. :banghead:

TomFont
07-17-13, 08:08 PM
Thanks Marv,
It's a sedan. I have the 19inch tire upgrade and they're set at 36 PSI. Yes, unfortunately some hills which I understand hurts but what goes up must come down on my 75 mile/day round trip commute.

EVH5150
07-18-13, 02:48 PM
I am getting 21 MPG combined Hiway/City driving. I have also noticed the numbers keep improving the longer I have had the car. I also took all those engine cover pieces off and the car seems smoother in hot city traffic.

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21 MPG combined is pretty good for a 300hp+ car that weighs anywhere from 3900-4300LBS.

popacork
07-21-13, 10:44 AM
Update: 26.2 MPG over 4672 miles. Ave. speed 62.4 MPH. Mostly freeway driving with city driving in Mpls., and Quad Cities, IA. (The John Deere Golf Classic was great). 30% oil life remaining at 6664 miles.

smooth_ride
09-02-13, 11:21 AM
I did 180 miles down to Cape May, NJ this weekend. I saw 32.7 mpg at 65mph going down -- there must have been a nice tailwind. Coming back I saw 28.7 at 64 mph, very little wind. 47k on OEM tires.

conedoctor
09-11-13, 06:58 PM
I just picked up a 2010 AWD wagon with the 3.0 and coming from an 08 Sierra Denali I think this car is great on gas!

A member mentioned a K&N filter, this will hurt MPG not help it.

Bob Shaw
09-11-13, 09:13 PM
First fill-up on my 2013 3.0 CTS Sport Sedan was 18.6 mpg. Mostly around town driving. I don't think that's too shabby.