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View Full Version : 11L/100km what should I do?


shu5892001
05-31-2010, 02:24 PM
Hey everyone,

My car has been drinking gas lately, I am getting around 10.8-11L/100km in the past 3 tanks (only local). I use to get around 9L/100km... I only have a INJEN CAI and Vibrant CBE. I also tried to reset the ecu, I don't think it worked. I am almost getting the same mileage as my friend's E90 330I. What should I go?

Thanks
Noisy Crow
05-31-2010, 02:36 PM
Make sure the parking brake is disengaging completely
Check your tire pressure
shu5892001
05-31-2010, 02:44 PM
Make sure the parking brake is disengaging completely
Check your tire pressure

I am sure the parking brake is disengaged completely from the inside, but could it be some problem with the rear brakes because I did have my rotors and pads changed for all 4 corners
SKYMP3
05-31-2010, 02:45 PM
I am almost getting the same mileage as my friend's E90 330I. What should I go?

Thanks

But you drive a "m3" ;)



You sure you are gentil on the gas pedal?
shu5892001
05-31-2010, 02:46 PM
lol I wish.. but I still can't believe I am getting the same mileage as his 3.0 straight 6...

But you drive a "m3" ;)



You sure you are gentil on the gas pedal?
cereal83
05-31-2010, 02:48 PM
Is it all city driving or all highway?
shu5892001
05-31-2010, 02:50 PM
Is it all city driving or all highway?

all city
stevenma188
05-31-2010, 02:50 PM
the 3 gets pretty brutal city mileage.
shu5892001
05-31-2010, 02:52 PM
the 3 gets pretty brutal city mileage.

I don't even drive fast, maybe for every tank I only rip it 2 or 3 times, and that's it
shu5892001
05-31-2010, 02:55 PM
I am thinking about trying the hypertech max energy tune, maybe it will increase hp and increase milage...
macman_ca
05-31-2010, 03:06 PM
I have the 2009 and have been tracking the mileage for a year and half now. It is pathetic!!! My average is 10.3l/100km. I drive Hwy/city and it really is bad. The only time I get decent mileage is when I do pure highway driving. the numbers they publish are crap!!!!!! I would have thought twice about the car before buying if I know it was that bad. Yes i do realize the numbers published are done in ideal situations etc... but should have been closer to posted than I actually am.
mazdilla
05-31-2010, 03:36 PM
Try shifting 1 - 3 - 5 if you are in no hurry. Its a little clumsy at first, but the fuel savings are phenomenal. I get around 580km-620km/40L with a Simota CB-II intake. I haven't installed my header and Vibrant exhaust yet.
cereal83
05-31-2010, 03:47 PM
all city

11 for all city isn't that bad at all imo


Try shifting 1 - 3 - 5 if you are in no hurry. Its a little clumsy at first, but the fuel savings are phenomenal. I get around 580km-620km/40L with a Simota CB-II intake. I haven't installed my header and Vibrant exhaust yet.

You get that good of mileage and do 100% city? My old 07 got similar mileage but it was 80% highway.
shu5892001
05-31-2010, 03:57 PM
Try shifting 1 - 3 - 5 if you are in no hurry. Its a little clumsy at first, but the fuel savings are phenomenal. I get around 580km-620km/40L with a Simota CB-II intake. I haven't installed my header and Vibrant exhaust yet.

I have an auto.... 4 spd.... fail... I know... lol
Pokey
05-31-2010, 03:57 PM
*looks down at sig*
shu5892001
05-31-2010, 03:58 PM
*looks down at sig*

:flaming
cwp_sedan
05-31-2010, 04:27 PM
I think you are out of luck. Feather the gas when you can but since you do mostly city driving, you are going to get bad mileage.
Pokey
05-31-2010, 04:43 PM
:flaming

Some things that let me get this low:
1. remove the weight (see my thread about the engine cover)
2. tires at 33psi (not 30 per the door sill)
3. shift at 3000 (almost) every time
4. 80-85% highway - about 1/2 of that doing 100 (hwy 6) the other 1/2 115ish (401)
5. clean air filter

Some people will swear that different gas stations sell better/worse gas for fuel economy, same with buying 87 vs 91. I don't buy the argument as I've purchased gas from Crappy Tire to Pet. Canada, to Pioneer (for the points) to Mac's stations so far without any noticeable difference.

Wes
michaelm
06-05-2010, 06:24 PM
Have you tried switching to a full synthetic? After switching to Mobil 1, my gas mileage went down significantly. I also have a Vibrant cbe and a MS cai setup as well.
shu5892001
06-05-2010, 07:10 PM
I am always running 100% synthetic lol
mazda lover
06-10-2010, 11:18 AM
I am always running 100% synthetic lol

I ran synthetic and found very little change in Mileage, not worth the cost of the oil to get very little or no change.
Pokey
06-10-2010, 11:26 AM
Whatever you do, don't drive down the 401 at 4000 rpm :( Not good for the possible tickets, and I'm sure the milage will suffer.
aris
06-10-2010, 11:30 AM
Doing straight city driving that's not bad...

Another thing you should look at doing is running a fuel injection cleaner and take it on the highway for a good drive..
Harbour Rat
06-10-2010, 11:54 AM
My car has been drinking gas lately, I am getting around 10.8-11L/100km in the past 3 tanks (only local). I use to get around 9L/100km


I am sure the parking brake is disengaged completely from the inside, but could it be some problem with the rear brakes because I did have my rotors and pads changed for all 4 corners

Assuming the jump in fuel consumption started after the brake job it seems too coincidental to be a coincidence. I'd check to make sure the rear brakes are not dragging.