Fuel Economy - Page 111 - Toyota Yaris Forums

Nigel8600 · 10-25-2013, 02:28 AM

My new summer car is a mint 06 civic ex manual with only 42000KM, I can usually get 6.2L/100KM in that thing and I just bought my 08 yaris for a winter car to replace a wrecked dodge sx I had for last winter. I must admit I was pretty happy with my first fill in the yaris.

471KM/24.84L fill right to the gas cap lol. About 10% highway driving. I'm a courier in the city.

MyzticZ3r0 · 10-25-2013, 07:04 AM

I finally got up in the high 30's last week, my average was 39.85mpg, but only for a little over three gallons. I wish I took a photo of the receipt before shredding it, but next time! I've changed my driving habit to driving ~62mph on the highway and driving about ~45-50mph local. I accelerate slower and when coming to a red light, I let off the gas and let the inertia do most of the work. I'm greatly satisfied with the results! My lead foot is slowly letting off... =D

nookandcrannycar · 03-13-2014, 08:22 PM

I tried to start a new thread for this, but kept getting an error message.

http://jalopnik.com/the-887-hp-porsc...mpg-1279805586

http://en.wikipedia.org/wiki/Porsche_918

nookandcrannycar · 03-14-2014, 06:09 PM

^^^^^ Bump (post #2041) Anyone?

why? · 03-15-2014, 11:27 PM

haven't seen anything about it yet. I know it's been fully tested on the Nürburgring, but haven't heard anything about deliveries.

nookandcrannycar · 03-16-2014, 12:51 AM

Quote:

Originally Posted by why?

haven't seen anything about it yet. I know it's been fully tested on the Nürburgring, but haven't heard anything about deliveries.

, and thanks for the reply.

Idahotom · 03-28-2014, 09:58 AM

Quote:

Originally Posted by why?

Almost all cars will be able to adjust for higher octane gasoline, so their will be some benefit.

If one wants to waste their money on premium fuel for an engine it is not needed for, thinking they are getting "extra power", I don't have a problem with that. I'll continue to use regular.

roxy1 · 03-30-2014, 08:11 PM

just took a trip to Indy and back today. 426 miles/9.42 gallons used=45.22 mpg. this was about 5% true city, 70% highway at 60-68 mph, and 25% rural roads at 40-55 mph. 2014 5 speed manual.

87 octane (with ethanol, of course). we are still using winter blend gas here, and it was in the upper 20's to upper 30's during the trip temperature wise(early morning trip).

im happy with that, but not surprised, as I keep pretty good mileage records and this is not out of the ordinary for such a trip. I have never seen any mpg advantage with higher octane and with the yaris don't see any performance advantages. so, imo, higher octane is a flat out waste of money.

why? · 03-30-2014, 08:20 PM

Quote:

Originally Posted by Idahotom

If one wants to waste their money on premium fuel for an engine it is not needed for, thinking they are getting "extra power", I don't have a problem with that. I'll continue to use regular.

Funny how all the epa tests and all mpg tests are done with 93 octane. I wonder why. How many centuries old is that quote? Or are you too scared to admit that?

Rigaud · 03-30-2014, 09:26 PM

Been 2-1/2 months now I have my 2009 Yaris, quite impressed with it so far. Been using it for ski trips to do Alpine Touring so I have had a roof rack with skis and sometimes even a pulk sled on the roof. My worse was 8.8L/100km on a 2,000km trip and recently my best was 6.6L/100km with no roof rack. Winter tires, cold air, some snow at times on the roads and good cross winds make it for the worse conditions to get good economy. On a short 320km trip this winter I did manage to get 5.6L/100km. With warmer weather, summer wheels on I'm quite confident I'll hit 5L.

roxy1 · 03-31-2014, 06:37 AM

Quote:

Originally Posted by why?

Funny how all the epa tests and all mpg tests are done with 93 octane. I wonder why. How many centuries old is that quote? Or are you too scared to admit that?

my brother in law sets up some of the testing for FCA (ie Fiat/Chrysler). they do that because 93 octane is commonly the gas available to them that is ethanol free. the ethanol free gas gives the best fuel efficiency. it has NOTHING to do with the higher octane.

why? · 03-31-2014, 08:01 AM

Quote:

Originally Posted by roxy1

my brother in law sets up some of the testing for FCA (ie Fiat/Chrysler). they do that because 93 octane is commonly the gas available to them that is ethanol free. the ethanol free gas gives the best fuel efficiency. it has NOTHING to do with the higher octane.

believe that if you want, but it simply is not true. That excuse doesn't work when you realize they have always used 93.

dj92 · 03-31-2014, 10:59 AM

Some time ago, I tried 98 fuel (was just 3% more expensive than the standard 95 (lowest we get here)).
Guess what?
I felt no difference, the mileage remained the same, too.

YHWilliam09 · 03-31-2014, 12:12 PM

Quote:

Originally Posted by dj92

Some time ago, I tried 98 fuel (was just 3% more expensive than the standard 95 (lowest we get here)).
Guess what?
I felt no difference, the mileage remained the same, too.

I don't know what's actually better, but you can't always feel a difference even when there could be one. It could be a subtle difference, and subtle differences have positive impacts in the long run, not to mention a lot of subtle differences add up to a big difference. To really know the difference though, you'd have to do actual testing with a good sample size and accurately recorded numbers. This will tell you the real difference despite what you might feel or not feel.

why? · 03-31-2014, 04:37 PM

Quote:

Originally Posted by dj92

Some time ago, I tried 98 fuel (was just 3% more expensive than the standard 95 (lowest we get here)).
Guess what?
I felt no difference, the mileage remained the same, too.

honestly, unless you run it on a dyno constantly there is not going to be any difference you can actually feel, and gas mileage changes so much for every degree of temperature, every time the wind blows, etc, that seeing a difference in gas mileage will be hard outside of a lab, which uses computers to drive the car over a pre-programmed course.

Especially with a near stock Yaris. Now add a turbo and a tuner and that is an entire different story.

The only thing I do is try to use different types of fuels because different gas companies use different additives, and those theoretically might help extend and make the engine more healthy. I have no idea if it is true or not, but it does not hurt my mileage.

Unless you are testing something with instruments, higher octane gas for our near stock Yaris is kind of silly.

roxy1 · 03-31-2014, 08:11 PM

Quote:

Originally Posted by why?

believe that if you want, but it simply is not true. That excuse doesn't work when you realize they have always used 93.

that is also not true. they commonly used 87 octane on many cars before there was ethanol in it.

why? · 04-01-2014, 04:07 PM

Quote:

Originally Posted by roxy1

that is also not true. they commonly used 87 octane on many cars before there was ethanol in it.

sure they did. I remember reading that on all the car ads, oh wait, no I don't. every single one made sure you knew it was always 93.

roxy1 · 04-01-2014, 11:59 PM

Quote:

Originally Posted by why?

sure they did. I remember reading that on all the car ads, oh wait, no I don't. every single one made sure you knew it was always 93.

starting in 2004, the EPA started using indolene across the board, a standardized test gasoline free of additives. it has a MON of 87 and RON of 96.5, thus yielding a pump octane of 91.5. before 2004 they used a variety of octanes, depending on what a given car was designed to run on.

using an ethanol free/additive free test gasoline give the best possible mpg numbers. the higher octane itself does squat for mpg numbers.

if I fill up with an ethanol free gasoline I will immediately realize a 7%-10& increase in fuel economy for that tank. my records over the last 15 years also tell me filling up with a higher octane fuel that has ethanol gains me absolutely no measurable fuel efficiency gain over 87 octane.

10-25-2013, 02:28 AM	#1981
Nigel8600 Drives: 2008 Yaris Sedan Join Date: Oct 2013 Location: Calgary AB Posts: 22	My new summer car is a mint 06 civic ex manual with only 42000KM, I can usually get 6.2L/100KM in that thing and I just bought my 08 yaris for a winter car to replace a wrecked dodge sx I had for last winter. I must admit I was pretty happy with my first fill in the yaris. 471KM/24.84L fill right to the gas cap lol. About 10% highway driving. I'm a courier in the city. __________________

03-13-2014, 08:22 PM	#1983
nookandcrannycar Drives: 2('14+'07)MT 3d ,wHandCrWndws! Join Date: May 2009 Location: S.MontgomeryCnty,TX(HoustonMSA) '07=BayouBlue=300,125miles=OrigOwnr '14=ClassicSilvr=29,059miles Posts: 4,839	Anyone know if the first one (U.S. Domestic Market) has been delivered ? I tried to start a new thread for this, but kept getting an error message. http://jalopnik.com/the-887-hp-porsc...mpg-1279805586 http://en.wikipedia.org/wiki/Porsche_918

03-15-2014, 11:27 PM	#1985
why? Only Happy When it Rains View User's Garage Drives: Yaris LB Join Date: Jan 2006 Location: harnett county NC Posts: 4,097	haven't seen anything about it yet. I know it's been fully tested on the Nürburgring, but haven't heard anything about deliveries. __________________ Colin Chapman disciple

10-25-2013, 07:04 AM	#1982
MyzticZ3r0 View User's Garage Drives: 2007 Toyota Yaris Hatchback Join Date: Sep 2012 Location: Las Vegas, NV Posts: 322	I finally got up in the high 30's last week, my average was 39.85mpg, but only for a little over three gallons. I wish I took a photo of the receipt before shredding it, but next time! I've changed my driving habit to driving ~62mph on the highway and driving about ~45-50mph local. I accelerate slower and when coming to a red light, I let off the gas and let the inertia do most of the work. I'm greatly satisfied with the results! My lead foot is slowly letting off... =D

03-14-2014, 06:09 PM	#1984
nookandcrannycar Drives: 2('14+'07)MT 3d ,wHandCrWndws! Join Date: May 2009 Location: S.MontgomeryCnty,TX(HoustonMSA) '07=BayouBlue=300,125miles=OrigOwnr '14=ClassicSilvr=29,059miles Posts: 4,839	^^^^^ Bump (post #2041) Anyone?

03-30-2014, 08:11 PM	#1988
roxy1 Drives: 2014 yaris 5 speed Join Date: Aug 2006 Location: michigan Posts: 642	just took a trip to Indy and back today. 426 miles/9.42 gallons used=45.22 mpg. this was about 5% true city, 70% highway at 60-68 mph, and 25% rural roads at 40-55 mph. 2014 5 speed manual. 87 octane (with ethanol, of course). we are still using winter blend gas here, and it was in the upper 20's to upper 30's during the trip temperature wise(early morning trip). im happy with that, but not surprised, as I keep pretty good mileage records and this is not out of the ordinary for such a trip. I have never seen any mpg advantage with higher octane and with the yaris don't see any performance advantages. so, imo, higher octane is a flat out waste of money.

03-30-2014, 09:26 PM	#1990
Rigaud Drives: 2009 Yaris Join Date: Jan 2014 Location: Rigaud, Quebec, Can. Posts: 355	Been 2-1/2 months now I have my 2009 Yaris, quite impressed with it so far. Been using it for ski trips to do Alpine Touring so I have had a roof rack with skis and sometimes even a pulk sled on the roof. My worse was 8.8L/100km on a 2,000km trip and recently my best was 6.6L/100km with no roof rack. Winter tires, cold air, some snow at times on the roads and good cross winds make it for the worse conditions to get good economy. On a short 320km trip this winter I did manage to get 5.6L/100km. With warmer weather, summer wheels on I'm quite confident I'll hit 5L.

03-31-2014, 10:59 AM	#1993
dj92 Embracing Curves View User's Garage Drives: '14 Prius Executive Join Date: Aug 2013 Location: mid-western Germany Posts: 256	Some time ago, I tried 98 fuel (was just 3% more expensive than the standard 95 (lowest we get here)). Guess what? I felt no difference, the mileage remained the same, too.