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View Full Version : winter MPGs :: how bad does it hurt?



ducatipaso
2011.01.03, 18:50 PM
I dunno about you guys, but my driving style and what I drive its really noticeable.
When the temps went way down I saw a significant hit in the E320.

I keep an eye on my tire pressures, I don't idle long times warming up or other stupid shit and I run the same oil 15-40 year round...

but damn, going from 18 to 15MPG on premium sucks.

Is the Oregon winter blend really that bad?

ducatipaso
2011.01.03, 18:51 PM
here's a neat read on cold temp MPGs

http://www.metrompg.com/posts/winter-mpg.htm

joel
2011.01.03, 18:53 PM
I got down below a 30mpg average on my last tank. My overall average has been about 33mpg. I was pretty heavy on the throttle the last tank, but I can definitely tell mileage isn't as good with the colder temps. Power isn't as good either... the car seems to do best when it's around 50 - 60F outside

twardnw
2011.01.03, 18:53 PM
over the last couple tanks I'm averaging 19.5mpg :crap:

ducatipaso
2011.01.03, 19:38 PM
I got 15.5 on my fillup today. Ouch.
But, that's what an old school 3.2L anything's gonna do for ya.
My 535i was way worse. o_O

DowNnOutDubin
2011.01.03, 19:42 PM
27.8mpg's on my last fill up. Not great, but nothing to complain much about :P

Plus I drive over a 1000ft pass going into work everyday.


According to that article I should really replace my thermostat. Should get me closer to the 30's.

90mk2golf
2011.01.04, 03:43 AM
My car seems to like the cold, feels a bit quicker with low temps.

joel
2011.01.04, 03:53 AM
My car seems to like the cold, feels a bit quicker with low temps.

most cars should feel quicker at cooler temps... denser air, etc. But that also means higher fuel consumption :D

rainierfuller
2011.01.04, 05:20 AM
I think I'm getting about 17mpg this winter. Compared to the 23-25 over the summer. I was rolling in 90 plus degree weather where I was all summer though.

90mk2golf
2011.01.04, 16:52 PM
most cars should feel quicker at cooler temps... denser air, etc. But that also means higher fuel consumption :D
Vary true.

Rabbit 16v
2011.01.04, 17:50 PM
My Golf is down to 41mpg from the normal 43ish. :(

ducatipaso
2011.01.04, 18:15 PM
most cars should feel quicker at cooler temps... denser air, etc. But that also means higher fuel consumption :D

yup a colder charge is a denser charge which means more HP. my TDIs were way faster in the cold.
the E320 feels fast in the cold once it's warmed up; it is a pig when the temps are in the 30s.

the interesting bit is the rolling resistance and overall fluid viscosity changes like wheel bearings and stuff.

simon-says
2011.01.04, 19:16 PM
Mikey. My TDI is getting about 40mpg still after all the work I've done to it. But yes, the fuel gauge goes down when my right foot pedal goes down. Lol.

joel
2011.01.04, 20:24 PM
yup a colder charge is a denser charge which means more HP. my TDIs were way faster in the cold.
the E320 feels fast in the cold once it's warmed up; it is a pig when the temps are in the 30s.

this is the weird part. I'm pretty sure my car is slower when the air temperature drops below ~50F or so. Maybe it's something weird my ECU does? I know it changes mixtures at higher altitudes...



the interesting bit is the rolling resistance and overall fluid viscosity changes like wheel bearings and stuff.

yup... the air is denser as well.. changes aerodynamics, etc.

Rabbit 16v
2011.01.04, 20:28 PM
Mikey. My TDI is getting about 40mpg still after all the work I've done to it. But yes, the fuel gauge goes down when my right foot pedal goes down. Lol.

Oh hai! dude! :p

joel
2011.01.04, 20:44 PM
yah.. welcome :D

EK20
2011.01.04, 21:43 PM
My Golf is down to 41mpg from the normal 43ish. :(

Man, 41mpg? How can you even afford to drive it with such horrible MPGs? :lol:

I too have noticed the customary drop in MPG's the last couple tanks.

Rabbit 16v
2011.01.04, 23:39 PM
Its tough. 42Kms per day. Its just an 87 Golf. It only cost me 7k ;) Still waiting for the payoff....

If it helps much, the soot factor has been significantly lower in these temps. I can blast the loud pedal and STILL see the car behind me :banghead:

joel
2011.01.04, 23:43 PM
I can blast the loud pedal and STILL see the car behind me :banghead:

oooooooh the disappointment :D

ducatipaso
2011.01.05, 00:07 AM
Mikey. My TDI is getting about 40mpg still after all the work I've done to it. But yes, the fuel gauge goes down when my right foot pedal goes down. Lol.

sir, it is beautiful to see you here. welcome.

there are times that I miss my TDI, but until we get a passat with 3rd row seat and awd and tdi, I'm out of the vw game.

joey, I have some stuff for the table in the waiting room. i need to stop by.

ducatipaso
2011.01.05, 00:09 AM
I can blast the loud pedal and STILL see the car behind me :banghead:

I miss this the most. My silver car had gooey upsolutey sooty exhaust it was awesome.

simon-says
2011.01.05, 15:44 PM
I think that everyone that has an O2 sensor on their car will have a lower MPG overall. Simply for the amount of ethanol (Oxygenated fuel)added to it. When it burns it produces oxygen, there for skewing the fuel trims to add more fuel. This is the way that OPEC can make up for lost revenue in the less driving months of the winter.

unimogken
2011.01.06, 07:04 AM
Is it bad that I never keep track?
I just fill my tank up with premium every time it gets down to a 1/4 of a tank.

joel
2011.01.06, 07:31 AM
Is it bad that I never keep track?
I just fill my tank up with premium every time it gets down to a 1/4 of a tank.

I probably wouldn't be keeping track myself if it weren't for the car doing it for me :D

twardnw
2011.01.06, 08:54 AM
www.fuelly.com :D

http://www.fuelly.com/sig-us/55219.png (http://www.fuelly.com/driver/twardnw/850)

ducatipaso
2011.01.06, 12:41 PM
I keep a spreadsheet with lots of tabs. I'm not an analyst for nothin. :)

Kaie
2011.01.09, 22:31 PM
I was just actually reading a deal the other day about bad MPG being partially blamed on 10% Ethanol blends. Ill try to dig it up out of my history.

joel
2011.01.09, 22:37 PM
I was just actually reading a deal the other day about bad MPG being partially blamed on 10% Ethanol blends. Ill try to dig it up out of my history.

:thumbup:

and welcome :)

ducatipaso
2011.01.09, 22:43 PM
I've heard this as well. I'd be interested in any reads.
If things don't improve in the spring I might be in the market for a hi-efficiency commuter.

Twelvizm
2011.01.10, 02:04 AM
The Passat is getting a little better mpg at around 20. And I don't know about the bimmer yet. My trip home I got around 27.

Twelvizm
2011.01.10, 02:05 AM
I've heard this as well. I'd be interested in any reads.
If things don't improve in the spring I might be in the market for a hi-efficiency commuter.

E21 Auto is pretty good. Not so good for your family though.

ExplosiveToaster
2011.01.13, 11:42 AM
I really noticed a hit in the GTI driving home and back. I-90 through upstate NY isn't very hilly, but I got 23mpg doing my usual not-exactly-following-the-speed-limit versus the 27mpg I got doing the same speeds through Montana this summer.

Even when I got caught up in snow and traffic slowed to 45 I barely got 25mpg. Oh well, it's still fun to drive :D

RoadRunner
2011.01.16, 20:03 PM
About 10mpgs in the Jeep in 4wd the past couple weeks, and about 80-100 miles a full tank on the sleds. Ouch

ducatipaso
2011.01.18, 08:13 AM
ouch