Fuel Economy - Page 98 - Toyota Yaris Forums

brg88tx · 08-14-2010, 01:19 AM

Quote:

Originally Posted by Thai_Dang

I only get 37.3 mpg with AT. Wondering if I could get better? I do 60% hwy, 40% city, live in suburb Garden Grove, CA. I accelerate really slowly, time red lights and limit brake lights, limit idling, go 5 mph below speed limit in city, go 65 mph on freeway, no AC usage. Have 0w20 syn motor oil. How do you guys get above 40 mpg or even 50? I believe I drive slower than 100% of the people in my area.

tires pumped up to 45? i think this is the best single thing to improve mpg on any vehicle.

Yaris Hilton · 08-14-2010, 03:36 PM

That's about what I get, doing all of the above and with tires pumped to 44 PSI. Nearly all my driving's in town, though.

Hershey · 08-15-2010, 12:18 AM

we achieve 40+ for both automatics with 35 > 36 P.S.I.. Just filled the sedan earlier and got 41.35 miles per gallon .

docB · 09-26-2010, 12:12 AM

Since I have owned my Yaris, including all the gas I've put in, my overall mpg is currently over 41. I just drive it. I shut off at long lights, it has been over 90mph, just auto crossed it last weekend. It has been to the fuel cut off. I get stuck in stop & go traffic. 42 psi frt, 35 rear. Synthetic oil, some stuff stripped out. 45mpg one time high on a tank full. Put 14" BBS wheels w/ 185/60-14 and it runs even better. I put photos on the forum.
doc
12k on it now in 13 months

krolos · 09-26-2010, 08:47 PM

There seems to be real difference what mpg people get in there Yaris,
I know drive style, Auto Vs manual and hybermile tricks account for some Of
that, but could it be that some Yaris just simply gets better mpg than others
regardless of Driver ,I am thinking there must be some kind of technical inconsistency in the engines or computers, there seems to be a fair amount
people here with similar driving styles, but big difference in mpg.

SpaceShot · 09-27-2010, 10:54 AM

I don't think the inconsistency theory about engines holds up.

I got 20-25% over EPA in my last ride which was a Suzuki XL-7.
24Mpg for a small/mid size SUV is not that bad.
But with the Yaris, and starting with an EPA rating of 36, my commute average is 45. It took 16 months to get from 38 to 45, but now it is very consistent.

Small tweaks (improved oil, filters, aero changes) by themselves might only get 1mgp improvement, but several of them combined with great driving will get very good mileage numbers.

42ezra · 09-27-2010, 01:03 PM

I own a 2008 hatchback and used to average 35 mpg with fast starts from lights and high speed on the interstates - all of a sudden when odometer turned over 70,000 typical mpg declined to 28. I have been using A/C this summer but also used A/C in the past. How can I check my emissions status, O2 sensor, etc. Anybody have any thoughts? Thank you for your kind attention.

SpaceShot · 09-27-2010, 03:22 PM

The ScanGuage has ability to read engine error codes and it would be worth your time to borrow one for a week or more.
If you want to spend just a little money you can get a Toyota capable engine code reader or have a local shop plug one in a give you a printed report.

I think an O2 sensor going bad at 70K is a little early. But emissions related devices are more likely than other items.
However, I would also look toward your wheels. (really low tire pressure, stuck or dragging caliper, serious misalignment) 70K worth of New England potholes could most certainly have worn something out...

mkaresh · 09-27-2010, 03:51 PM

O2 sensors can go at any time, it seems. But in this case there would be a CEL.

henry33 · 09-28-2010, 08:35 AM

I get the fuel consumption of 5.5 l/km, should be something around 43 mpg I do not really know how you are able to get 50 mpg
I have 1.33 1nr-fe engine and manual 6 speed trany ;) it helps a lot on the highway ;) nut still not able to get 50 :(

Eatoman · 09-28-2010, 01:15 PM

Quote:

I get stuck in stop & go traffic. 42 psi frt, 35 rear.

Does it make a difference in gas mileage if you inflate the front tires more than the rear?
I currently have all tires at 40psi...

nmgolfer · 09-29-2010, 03:11 PM

Quote:

Originally Posted by henry33

I get the fuel consumption of 5.5 l/km, should be something around 43 mpg I do not really know how you are able to get 50 mpg
I have 1.33 1nr-fe engine and manual 6 speed trany ;) it helps a lot on the highway ;) nut still not able to get 50 :(

Drive like a sailor.... Think SMOOOOOOOOOTHHHH....Don't turn that tiller or you'll scrub off some speed. Pretend you don't have any brakes and drive accordingly. When I was a kid my boss had a truck with crappy brakes I occasionally had to drive... Old Swede farmer that he was, he had no sympathy for me and simply said: don't get into a position where you need your brakes! I still drive that way today nearly forty years later and I still have nightmares of standing on those brakes and that thing slooooooowly coming to a stop.

Thing is anytime your foot is off (I mean off) the gas pedal you're getting better than 200 mpg (ac off right?) It adds up. Too bad our littl' Yaris doesn't have regen brakes say spinning up a little flywheel so we wouldn't have to feel so bad about using them... In time it will I suppose

STC · 09-29-2010, 07:05 PM

Quote:

Originally Posted by henry33

I get the fuel consumption of 5.5 l/km, should be something around 43 mpg I do not really know how you are able to get 50 mpg
I have 1.33 1nr-fe engine and manual 6 speed trany ;) it helps a lot on the highway ;) nut still not able to get 50 :(

Drive below 55 MPH (88 KPH). Be very gentle on the accelerater, as if it is an egg! Pump up your tires to manufacturer maximum rating. Use long in gear glides on hills/grades... coasting. Drive 70% of the time or above highway miles. Limit your weight of car...

Cheers!

SimTronik · 09-29-2010, 09:52 PM

40psi, really? Damn

bkrownd · 09-29-2010, 10:12 PM

Quote:

Originally Posted by STC

Drive below 55 MPH (88 KPH). Be very gentle on the accelerater, as if it is an egg! Pump up your tires to manufacturer maximum rating. Use long in gear glides on hills/grades... coasting. Drive 70% of the time or above highway miles. Limit your weight of car...

Walk, bike and bus whenever possible.

henry33 · 09-30-2010, 04:22 AM

I am trying everything possible but it is very hard in the city to push it below.
on the highway when I was doing 100 km/h I was able to push it on 4 l/100km ;)

STC · 09-30-2010, 08:28 AM

Quote:

Originally Posted by henry33

I am trying everything possible but it is very hard in the city to push it below.
on the highway when I was doing 100 km/h I was able to push it on 4 l/100km ;)

If you are able to drive over 70% on super highways or xpressways you can get over 45 mpg, considering you keep the car's speed at under 85-88 kph... super gentle on the accelerator, and major glides (foot off gas pedal) using the car's inertia (momentum). City driving - stop and go driving limits FE!

Cheers!

STC · 09-30-2010, 08:33 AM

Quote:

Originally Posted by bkrownd

Walk, bike and bus whenever possible.

YES! Would be nice if this was promoted and actively encouraged by American culture!

Cheers!

09-27-2010, 03:51 PM	#1755
mkaresh Drives: Mazda Protege5 Join Date: Jan 2007 Location: Michigan Posts: 88	O2 sensors can go at any time, it seems. But in this case there would be a CEL. __________________ truedelta.com Vehicle reliability, fuel economy, price comparisons

08-14-2010, 03:36 PM	#1748
Yaris Hilton Half a Bubble Off Plumb Drives: 2009 Yaris Sedan Join Date: Mar 2009 Location: Bristol, Tennessee, USA Posts: 1,593	That's about what I get, doing all of the above and with tires pumped to 44 PSI. Nearly all my driving's in town, though.

08-15-2010, 12:18 AM	#1749
Hershey Drives: 08 Yaris sedan auto / Fit auto Join Date: Oct 2009 Location: northeast Posts: 2,897	we achieve 40+ for both automatics with 35 > 36 P.S.I.. Just filled the sedan earlier and got 41.35 miles per gallon .

09-26-2010, 12:12 AM	#1750
docB Drives: '09 Yaris Sedan Join Date: Oct 2009 Location: Western N.Y. Posts: 75	Since I have owned my Yaris, including all the gas I've put in, my overall mpg is currently over 41. I just drive it. I shut off at long lights, it has been over 90mph, just auto crossed it last weekend. It has been to the fuel cut off. I get stuck in stop & go traffic. 42 psi frt, 35 rear. Synthetic oil, some stuff stripped out. 45mpg one time high on a tank full. Put 14" BBS wheels w/ 185/60-14 and it runs even better. I put photos on the forum. doc 12k on it now in 13 months

09-26-2010, 08:47 PM	#1751
krolos Drives: 2008 yaris sedan Join Date: Jul 2010 Location: wa state Posts: 90	There seems to be real difference what mpg people get in there Yaris, I know drive style, Auto Vs manual and hybermile tricks account for some Of that, but could it be that some Yaris just simply gets better mpg than others regardless of Driver ,I am thinking there must be some kind of technical inconsistency in the engines or computers, there seems to be a fair amount people here with similar driving styles, but big difference in mpg.

09-27-2010, 10:54 AM	#1752
SpaceShot Drives: 2008 Yaris 5 speed HB Join Date: Oct 2008 Location: NH Posts: 171	I don't think the inconsistency theory about engines holds up. I got 20-25% over EPA in my last ride which was a Suzuki XL-7. 24Mpg for a small/mid size SUV is not that bad. But with the Yaris, and starting with an EPA rating of 36, my commute average is 45. It took 16 months to get from 38 to 45, but now it is very consistent. Small tweaks (improved oil, filters, aero changes) by themselves might only get 1mgp improvement, but several of them combined with great driving will get very good mileage numbers.

09-27-2010, 01:03 PM	#1753
42ezra Drives: 2010 2dr MT Liftback Join Date: May 2009 Location: New fairfield, CT Posts: 18	I own a 2008 hatchback and used to average 35 mpg with fast starts from lights and high speed on the interstates - all of a sudden when odometer turned over 70,000 typical mpg declined to 28. I have been using A/C this summer but also used A/C in the past. How can I check my emissions status, O2 sensor, etc. Anybody have any thoughts? Thank you for your kind attention.

09-27-2010, 03:22 PM	#1754
SpaceShot Drives: 2008 Yaris 5 speed HB Join Date: Oct 2008 Location: NH Posts: 171	The ScanGuage has ability to read engine error codes and it would be worth your time to borrow one for a week or more. If you want to spend just a little money you can get a Toyota capable engine code reader or have a local shop plug one in a give you a printed report. I think an O2 sensor going bad at 70K is a little early. But emissions related devices are more likely than other items. However, I would also look toward your wheels. (really low tire pressure, stuck or dragging caliper, serious misalignment) 70K worth of New England potholes could most certainly have worn something out...

09-28-2010, 08:35 AM	#1756
henry33 Drives: yaris1.33 Join Date: Jul 2010 Location: slovakia Posts: 425	I get the fuel consumption of 5.5 l/km, should be something around 43 mpg I do not really know how you are able to get 50 mpg I have 1.33 1nr-fe engine and manual 6 speed trany ;) it helps a lot on the highway ;) nut still not able to get 50 :(

09-29-2010, 09:52 PM	#1760
SimTronik Machinist View User's Garage Drives: Yaris sedan 2010 Join Date: Sep 2010 Location: Sts-Anges, Quebec, canada Posts: 198	40psi, really? Damn

09-30-2010, 04:22 AM	#1762
henry33 Drives: yaris1.33 Join Date: Jul 2010 Location: slovakia Posts: 425	I am trying everything possible but it is very hard in the city to push it below. on the highway when I was doing 100 km/h I was able to push it on 4 l/100km ;)