Super bad gas mileage in the winter!! Winnipegers, please come. [Archive] - Club RSX Message Board

: Super bad gas mileage in the winter!! Winnipegers, please come.


kkkat
12-20-2007, 09:54 AM
So I drive to work everyday on pembina about 16kms per day, and I realise my gas mileage's gone down from 22mpg(summer) to 15mpg(winter). Is this normal? Maybe Pembina is busy during rush hour, but can it really bring down the gas mileage that much? Even the summer mileage didn't seem very right to me but i couldn't find any problem. My car is an 03 rsx auto. Just wanna know if everyone else has the similar figures. Thanks. :o

Riceoroni
12-20-2007, 10:49 AM
have you check your tire pressure recently, that will effect gas mileage.

Dynamite_TypeS
12-20-2007, 12:24 PM
Yuppers check the pressure. Most people forget this when putting on winter tires especially.

krystar
12-20-2007, 01:22 PM
esp since it's colder, tire pressures drop. :)

the hold boyle's law thing

TONY MONTANA
12-20-2007, 10:06 PM
Do you have mods like CAI? My milage goes from like 26-27 mpg in the summer to 20-21 mpg in the winter. I check my tire pressures and even checked my tune in k-pro and the only thing different about my car in the winter is that it is getting air intake temps of like 30 F instead of like 75 F.

coldrsx
12-21-2007, 11:01 AM
in winter we idle longer to warm up, drive slower which can raise mileage, but generally we spend more time driving due to conditions was lowers it.

findingeverland
12-21-2007, 11:05 AM
i had bad milage too.....sucks...

Bath Tussue
12-21-2007, 12:09 PM
hm...
i get better mileage in the winter...
summer is usually around 9~10L/100km
winter is usually 8~9L/100km
but then, i don't idle in grid (autoX) in the winter

peazs
12-21-2007, 01:17 PM
i never idle as i'm always rushing to work :(
how long do you guys idle for?

HardcoreRsxS
12-21-2007, 01:30 PM
Do you have mods like CAI? My milage goes from like 26-27 mpg in the summer to 20-21 mpg in the winter. I check my tire pressures and even checked my tune in k-pro and the only thing different about my car in the winter is that it is getting air intake temps of like 30 F instead of like 75 F.

The reason for this, even with a full part throttle tune, is with colder temperatures, the ecu will add fuel to keep it at 14.7. This is why i raise the bar a little bit and do my part throttle tunes at 15.2-16.0 af ratio

kkkat
12-21-2007, 06:16 PM
Hm...I usually idle for like a min or two. Can it really bring the mileage down that much?

Bath Tussue: 9-10L/ 100km is impressive, I wish mine was like that.
TONY MONTANA: My car has no mods in it.

If there isn't anything wrong with my car, then i will probably leave it as it is. Thanks guys.

Just got an oili change, and they washed my car, nice and clean. Then it follows with a frozen door handle and broke the linkage when I tried to open it...lucky they said I don't have to pay to fix it. still waste of time tho. Should've asked them not to wash it. Sigh....

Bath Tussue
12-21-2007, 06:34 PM
i also idle the car for 1 minute before driving it.

WPGtypeS
12-22-2007, 07:50 PM
its normal to drop about 5 - 7 during winter months(especially in the colder months), add winnipegs shitty traffic flow (its like as soon as winter hits drivers get even worse, and they horrendious to begin with) add fluxtuating tire pressures, add spinning tires and your mile per gallon goes down

to help with getting better fuel economy, switch to a synthetic oil, keep warm up times down to a min. (about 1 minute for every 10km of driving straight from honda/acura canada), set tire pressures in the cold(a pain in the ass at -30) and you'll notice better fuel economy.

Girn
12-22-2007, 09:56 PM
i idle for 3-4 mins everday

coldrsx
12-24-2007, 11:25 AM
might also want to change to a 5w-20 or 30 if you have 10w in...helps considerably in colder weather

Nickcrsx
12-24-2007, 11:30 AM
My gas consumption is nearly 50% more in the winter. I got 450-550km's per tank in the summer with moderate WOT. Now i get no more than 350 with NO VTEC. IAT temps are owning me.

mizjif
12-24-2007, 05:41 PM
mine is not too bad actually, despite warm-up times etc. im getting around 500 km to a tank. same as normal for me.

Slip_Angle
12-24-2007, 10:28 PM
Mine drops from 400km per ~42 liters to about 320km....

Kpro'd K24a2

I also warm it up longer.

IanB
12-28-2007, 07:52 PM
A drop in MPG in the winter is normal, lots of guys have stated the reasons why already, and the fact you've got an auto isn't going to help you out at all.

Frosty
12-31-2007, 11:24 AM
Yeah, winter fuel efficiency over a short-ish commute in cold Manitoba...

You've got
- Generally a longer idle while you defrost the car
- Oil is going to be thick and resistive in the cold (might want a 0W30)
- Colder air is denser and has more oxygen, more gas can be burned, and you may get a pleasant bump in power provided it's not humid
- If you are on steel wheels, they are heavy, and the weight of your wheels and tires, of all places, is the one place where a few pounds will make an impact on your fuel economy.

Mine has been about the same, but you can hardly say Vancouver has a winter compared to Winnipeg.