Higher Gas Mileage

Nov 2nd, 2020 6:41 pm

#1

Unknown18281 [OP]: Sr. Member; Jul 6, 2019; 672 posts; 752 upvotes

Nov 2nd, 2020 6:41 pm

We have a 2009 Camry. Apparently, in mid-late October, the gas mileage rises maybe 40% (12L/100km to maybe 16-17L/100km). No changes. We even remote started few times in September and it was getting 12L/100km, and out of no where, last tank was 14L/100km and this tank will probably be 16-17L/100km. Then in April, the gas mileage gets better by the same amount. Im probably just over reacting but we also have a 2007 Nissan Altima. That doesnt get bad gas mileage in winter, stays almost same all year long.

Last edited by Unknown18281 on Dec 17th, 2020 7:20 pm, edited 3 times in total.

Share:

Nov 2nd, 2020 6:47 pm

#2

George613: Sr. Member; Oct 3, 2017; 953 posts; 786 upvotes

Nov 2nd, 2020 6:47 pm

Winter always increases fuel consumption on any vehicle I have ever driven.

Nov 2nd, 2020 6:50 pm

#3

Unknown18281 [OP]: Sr. Member; Jul 6, 2019; 672 posts; 752 upvotes

Nov 2nd, 2020 6:50 pm

George613 wrote: ↑ Winter always increases fuel consumption on any vehicle I have ever driven.

I know, but its like theres a specfic date that the gas mileage goes up. Its like 1 tank, its good, 2nd tank its like above normal. Usually its suppose to be a 0.5-1.5L/100km if not more. Not like a 5-6L/100km difference

Nov 2nd, 2020 6:51 pm

#4

vkizzle: Deal Expert; Aug 22, 2011; 35652 posts; 21738 upvotes; Center of Universe

Nov 2nd, 2020 6:51 pm

Stations already switched to winter gas?

Nov 2nd, 2020 6:52 pm

#5

Unknown18281 [OP]: Sr. Member; Jul 6, 2019; 672 posts; 752 upvotes

Nov 2nd, 2020 6:52 pm

vkizzle wrote: ↑ Stations already switched to winter gas?

Yes, but even after change to winter gas, it was fine for like a month

+1

Nov 2nd, 2020 6:57 pm

#6

Jruuu: Sr. Member; Jun 13, 2009; 840 posts; 552 upvotes; Toronto

Nov 2nd, 2020 6:57 pm

Read this:

https://www.nrcan.gc.ca/energy/efficien ... ther/21032

Nov 2nd, 2020 7:01 pm

#7

Unknown18281 [OP]: Sr. Member; Jul 6, 2019; 672 posts; 752 upvotes

Nov 2nd, 2020 7:01 pm

Someone remove this thread

Nov 2nd, 2020 7:02 pm

#8

vkizzle: Deal Expert; Aug 22, 2011; 35652 posts; 21738 upvotes; Center of Universe

Nov 2nd, 2020 7:02 pm

Unknown18281 wrote: ↑ Yes, but even after change to winter gas, it was fine for like a month

Now that it's colder, your vehicle is likely running richer to get the engine up to temp quicker.

Nov 2nd, 2020 7:05 pm

#9

Unknown18281 [OP]: Sr. Member; Jul 6, 2019; 672 posts; 752 upvotes

Nov 2nd, 2020 7:05 pm

vkizzle wrote: ↑ Now that it's colder, your vehicle is likely running richer to get the engine up to temp quicker.

Ok but theres a difference of 5-6L/100k sometimes 7-10.

Nov 2nd, 2020 7:42 pm

#10

George613: Sr. Member; Oct 3, 2017; 953 posts; 786 upvotes

Nov 2nd, 2020 7:42 pm

So OP what exactly is your question?

+1

Nov 2nd, 2020 7:58 pm

#11

Unknown18281 [OP]: Sr. Member; Jul 6, 2019; 672 posts; 752 upvotes

Nov 2nd, 2020 7:58 pm

George613 wrote: ↑ So OP what exactly is your question?

Whys there a big difference between summer and winter, 5-7L/100km, it's supposed to be like 1-2

Nov 2nd, 2020 8:02 pm

#12

bhrm: Deal Addict; Jul 13, 2009; 4693 posts; 2813 upvotes

Nov 2nd, 2020 8:02 pm

Sounds like a sensor issue. Mass airflow sensor, or some other sensor is stuck and not reading things correctly.

+1

Nov 2nd, 2020 8:07 pm

#13

Unknown18281 [OP]: Sr. Member; Jul 6, 2019; 672 posts; 752 upvotes

Nov 2nd, 2020 8:07 pm

bhrm wrote: ↑ Sounds like a sensor issue. Mass airflow sensor, or some other sensor is stuck and not reading things correctly.

216k km, no cel. If that was the case, wouldnt the gas mileage be bad all year around?

Nov 2nd, 2020 8:13 pm

#14

bhrm: Deal Addict; Jul 13, 2009; 4693 posts; 2813 upvotes

Nov 2nd, 2020 8:13 pm

Unknown18281 wrote: ↑ 216k km, no cel. If that was the case, wouldnt the gas mileage be bad all year around?

Unless the sensor or something is stuck on "summer weather".

Nov 2nd, 2020 8:21 pm

#15

Unknown18281 [OP]: Sr. Member; Jul 6, 2019; 672 posts; 752 upvotes

Nov 2nd, 2020 8:21 pm

bhrm wrote: ↑ Unless the sensor or something is stuck on "summer weather".

Really lol, it happens every winter season

Nov 2nd, 2020 8:59 pm

#16

BeaverLiquor: Deal Fanatic; Mar 1, 2005; 5754 posts; 3364 upvotes; Toronto

Nov 2nd, 2020 8:59 pm

LOL, do you even have your license yet?

car-used-too-much-fuel-2358683/

B/S/T Threads

[FS] N/A
[WTB] N/A

+2

Nov 2nd, 2020 9:11 pm

#17

Unknown18281 [OP]: Sr. Member; Jul 6, 2019; 672 posts; 752 upvotes

Nov 2nd, 2020 9:11 pm

BeaverLiquor wrote: ↑ LOL, do you even have your license yet?

car-used-too-much-fuel-2358683/

No, but I will next year. These are my parents car lol

Nov 3rd, 2020 1:17 pm

#18

MyGoToUserName: Member; Oct 25, 2020; 272 posts; 193 upvotes

Nov 3rd, 2020 1:17 pm

Tires with worse rolling resistance
Winter fuel
More idling
Every start is essentially a cold start due to temperatures. More fuel is burned when the engine is cold.

Also 12L/100 in the summer is pretty terrible, I forgot the V6s were thirsty in the city. I would try measuring fuel economy with trip odometer and fuel measured by every fill up. The computer is pretty accurate but I wouldn't trust it 100%

Basic stuff like cleaning the MAF sensor, pulling the battery for 20-30 minutes and letting the computer recalibrate is a start.

Nov 3rd, 2020 1:21 pm

#19

Unknown18281 [OP]: Sr. Member; Jul 6, 2019; 672 posts; 752 upvotes

Nov 3rd, 2020 1:21 pm

MyGoToUserName wrote: ↑ Tires with worse rolling resistance
Winter fuel
More idling
Every start is essentially a cold start due to temperatures. More fuel is burned when the engine is cold.

Also 12L/100 in the summer is pretty terrible, I forgot the V6s were thirsty in the city. I would try measuring fuel economy with trip odometer and fuel measured by every fill up. The computer is pretty accurate but I wouldn't trust it 100%

Basic stuff like cleaning the MAF sensor, pulling the battery for 20-30 minutes and letting the computer recalibrate is a start.

Yes I know

Nov 3rd, 2020 1:30 pm

#20

jdmfishingonly: Deal Addict; Oct 13, 2008; 4962 posts; 1841 upvotes

Nov 3rd, 2020 1:30 pm

These are my averages over the past year (2015 Lancer tuned COBB Stage 2 ... only Petro Canada 91 Octane):

SUMMER: 15.5km/L ( or 6.45 L / 100 km)

WINTER: 12.5km/L ( or 8 L / 100 km )

I reset the Trip Odometer each time I fill up.

Take the number of kilometers driven and divide my the number of litres to fill up.

It's been constant for the past 5 years.

Last edited by jdmfishingonly on Nov 3rd, 2020 1:52 pm, edited 1 time in total.

16'x11' Living Room 11' Cathedral Ceiling. Hisense 65Q8G. Denon AVR-S740H 7.2 setup. Jamo Classic 10 280W Towers - FR+FL; Polk S35 - Center; Klipsch R51M - RR+RL; Klipsch R14M - Dolby FHR+FHL; Polk HTS10 Subwoofer x2. Unlocked Android Boxes from Taiwan x2