Broke 50 MPG - Toyota Yaris Forums

STC · 07-21-2010, 10:04 AM

Hi Everyone:

Well, it's been two months since I first broke the 50 MPG barrier. Just filled up my tank early this morning and the calculation came out to 51.542...

I filled-up at the 7th Bar (1/4 Tank).

I have been using the same hypermiling techniques that I've learned from this great Fuel Economy Forum! The only difference in driving this time rather than in May is that it involved a shorter trip (200mi), changing the tire pressure from 38 psi to 42 psi, and me using my A/C 1/2 the time of the trip.

I have noticed with the vehicle that when the weather is hot the engine really likes the heat! Using the A/C more than usual for me seems to not have any effect on gas mileage?

Has anyone experienced the same? I have increases my tire pressure. It's been in the upper 80's and low 90's in PA. The trip was during the height of the heat wave in the Northeast.

I'm going to be taking another short trip at the end of this week and in the beginning of August. It would be nice to get two consecutive +50 MPG on this tank?

Cheers!

Gas Tank mile increments (non-ethanol gas used):
1st Bar drop (8/8) > 102 mi (102)
2nd Bar drop (7/8) > 86 mi (188)
3rd Bar drop (3/4) > 50 mi (238)
4th Bar drop (5/8) > 62 mi (300)
5th Bar drop (1/2) > 74 mi (374)
6th Bar drop (3/8) > 72 mi (446)
7th Bar drop (1/4) > 52 mi (498)
8th Bar drop (1/8) > 0

Tank total : 498 miles
Fuel used: 9.662 gallons
MPG: 51.542

R2D2 · 07-21-2010, 11:45 AM

Nice work my friend! That's awesome economy. I too have noticed the Yaris LOVES heat to the point it helps to offset the use of AC. I just got two of my best tanks ever (46.2 and 45.4 mpg-5dr LB auto) in humid 80-90 deg weather with almost constant AC use.

R2

KrazyDawg · 07-21-2010, 12:05 PM

Congratulations. So when are you going to get that Ecometer or Scangauge to post some higher numbers ;)

STC · 07-21-2010, 02:44 PM

Quote:

Originally Posted by R2D2

Nice work my friend! That's awesome economy. I too have noticed the Yaris LOVES heat to the point it helps to offset the use of AC. I just got two of my best tanks ever (46.2 and 45.4 mpg-5dr LB auto) in humid 80-90 deg weather with almost constant AC use.

R2

Thanks...

I'm very pleased with the car's FE! It is exciting everytime I fill-up and wait for the pump to "click'...

For once I don't mind going to the gas station!

Cheers!

STC · 07-21-2010, 02:54 PM

Quote:

Originally Posted by KrazyDawg

Congratulations. So when are you going to get that Ecometer or Scangauge to post some higher numbers ;)

Thanks...

Funny thing you ask! I've been eyeing the Ecometer or Scanguage for some time now. Don't know which one to get?

In August, I'm purchasing from Garm a rear sway bar. I found out he also sells the Ecometer for $59.95... that's a good price! I may just be placing an order now for two items...

Cheers!

KrazyDawg · 07-21-2010, 07:28 PM

Quote:

Originally Posted by STC

Thanks...

Funny thing you ask! I've been eyeing the Ecometer or Scanguage for some time now. Don't know which one to get?

In August, I'm purchasing from Garm a rear sway bar. I found out he also sells the Ecometer for $59.95... that's a good price! I may just be placing an order now for two items...

Cheers!

That's where I ordered mine from. He price matched with free shipping. I should be getting mine tomorrow.

R2D2 · 07-22-2010, 01:14 AM

Quote:

Originally Posted by STC

Thanks...

I'm very pleased with the car's FE! It is exciting everytime I fill-up and wait for the pump to "click'...

For once I don't mind going to the gas station!

Cheers!

I couldn't agree more-fill ups are "events" for me as well.

bkrownd · 07-22-2010, 01:26 AM

I'm stuck hovering around 44 MPG. I need to start riding my bike to work again to eliminate all those 2-5 mile MPG-killing commutes. Then I will join the "50 Club" as well...

I'm surprised about the heat effect, since I always thought colder/denser air in the intake would give a bit more power? My car won't get any "heat assist" here, anyhow.

firemachine69 · 07-22-2010, 03:51 AM

Cold/dense air requires more fuel to combust, hence the increase in power.

However, more fuel is detrimental to FE.

Hence why hot air will benefit the Yaris in your quest for FE.

bkrownd · 07-22-2010, 03:50 PM

Quote:

Originally Posted by firemachine69

Cold/dense air requires more fuel to combust, hence the increase in power.

If there was excess power you'd be accelerating. To maintain speed you'd respond by reducing throttle to eliminate the excess power and it would balance out to the same FE. There has to be another or more specific explanation, like a decrease in power output per unit fuel flow rate for colder intake air.

To take it to the limit, your arguement suggests that the thinner the air gets the higher the fuel efficiency will be. It obviously isn't that simple.

firemachine69 · 07-23-2010, 02:06 AM

No, it really is that simple, that's the basics behind the "CAI", or "Cold Air Intake".

STC · 08-04-2010, 11:47 AM

Hi Everyone:

Just the other day, I was able to reach consecutively 50+ MPG... this time 52.166 MPG.

No different techniques then last month... and the same tire pressure. The only difference is I took two trips (200mi and 100mi) instead of one.

It has been very hot and muggy! The Yaris loves the heat and highway trips...

I'm using the A/C still about 1/2 the time of my driving. It seems that using the A/C has not had any affect on fuel consumption...

Hopefully, I can make three consecutive 50+ MPG tanks? The cooler weather will be coming soon, the Yaris does not perform as well in FE for the PA Winter Season.

Cheers!

Gas Tank mile increments (non-ethanol gas used):
1st Bar drop (8/8) > 112 mi (112)
2nd Bar drop (7/8) > 85 mi (197)
3rd Bar drop (3/4) > 40 mi (237)
4th Bar drop (5/8) > 73 mi (310)
5th Bar drop (1/2) > 83 mi (393)
6th Bar drop (3/8) > 60 mi (453)
7th Bar drop (1/4) > 55 mi (508)
8th Bar drop (1/8) > 0

Tank total : 508 miles
Fuel used: 9.738 gallons
MPG: 52.166

BailOut · 08-04-2010, 12:52 PM

Well done!

RED87 · 08-04-2010, 04:49 PM

Wow your getting better mileage than I am in my 2010 5 Door LB auto What state do you live in? I live in UTAH and I average 36-40 miles per gallon...

KrazyDawg · 08-04-2010, 06:35 PM

Quote:

Originally Posted by STC

Hi Everyone:

Just the other day, I was able to reach consecutively 50+ MPG... this time 52.166 MPG.

No different techniques then last month... and the same tire pressure. The only difference is I took two trips (200mi and 100mi) instead of one.

It has been very hot and muggy! The Yaris loves the heat and highway trips...

I'm using the A/C still about 1/2 the time of my driving. It seems that using the A/C has not had any affect on fuel consumption...

Hopefully, I can make three consecutive 50+ MPG tanks? The cooler weather will be coming soon, the Yaris does not perform as well in FE for the PA Winter Season.

Cheers!

Gas Tank mile increments (non-ethanol gas used):
1st Bar drop (8/8) > 112 mi (112)
2nd Bar drop (7/8) > 85 mi (197)
3rd Bar drop (3/4) > 40 mi (237)
4th Bar drop (5/8) > 73 mi (310)
5th Bar drop (1/2) > 83 mi (393)
6th Bar drop (3/8) > 60 mi (453)
7th Bar drop (1/4) > 55 mi (508)
8th Bar drop (1/8) > 0

Tank total : 508 miles
Fuel used: 9.738 gallons
MPG: 52.166

What's the low and the high in your area?

STC · 08-05-2010, 05:37 PM

Quote:

Originally Posted by KrazyDawg

What's the low and the high in your area?

What do you mean? Is this something you gather from Ecometer or SGII?

Cheers!

KrazyDawg · 08-06-2010, 12:40 PM

Quote:

Originally Posted by STC

What do you mean? Is this something you gather from Ecometer or SGII?

Cheers!

Sorry, I meant the temperatures. I'm trying to figure out what's the optimal temp for the Yaris to run in.

STC · 08-08-2010, 12:46 PM

Quote:

Originally Posted by KrazyDawg

Sorry, I meant the temperatures. I'm trying to figure out what's the optimal temp for the Yaris to run in.

Both trips I traveled in the late morning into afternoon. The outside temperature was at around 90-92 degrees with high humidity... very sticky. I used A/C over half of the time.

Cheers!

07-21-2010, 10:04 AM	#1
STC "LibertyRides!" View User's Garage Drives: 2010 Yaris 3Dr LB \| 2020 Stang Join Date: Mar 2010 Location: State College, PA, USA Posts: 576	Broke 50 MPG Hi Everyone: Well, it's been two months since I first broke the 50 MPG barrier. Just filled up my tank early this morning and the calculation came out to 51.542... I filled-up at the 7th Bar (1/4 Tank). I have been using the same hypermiling techniques that I've learned from this great Fuel Economy Forum! The only difference in driving this time rather than in May is that it involved a shorter trip (200mi), changing the tire pressure from 38 psi to 42 psi, and me using my A/C 1/2 the time of the trip. I have noticed with the vehicle that when the weather is hot the engine really likes the heat! Using the A/C more than usual for me seems to not have any effect on gas mileage? Has anyone experienced the same? I have increases my tire pressure. It's been in the upper 80's and low 90's in PA. The trip was during the height of the heat wave in the Northeast. I'm going to be taking another short trip at the end of this week and in the beginning of August. It would be nice to get two consecutive +50 MPG on this tank? Cheers! Gas Tank mile increments (non-ethanol gas used): 1st Bar drop (8/8) > 102 mi (102) 2nd Bar drop (7/8) > 86 mi (188) 3rd Bar drop (3/4) > 50 mi (238) 4th Bar drop (5/8) > 62 mi (300) 5th Bar drop (1/2) > 74 mi (374) 6th Bar drop (3/8) > 72 mi (446) 7th Bar drop (1/4) > 52 mi (498) 8th Bar drop (1/8) > 0 Tank total : 498 miles Fuel used: 9.662 gallons MPG: 51.542 __________________ ~ Mark ~ 2010 Yaris 3-Dr Liftback, 5-Speed Manual, P185/60R 15, Bayou Blue Pearl I Love my YARIS - (Click below to see Gaslog): Most miles Tank: 538 tank/10.148 gal = 53.015 MPG / Most MPG: 54.95 MPG (ethanol) 425 tank/7.73 gal "The evils of government are directly proportional to the tolerance of the people." -- Frank Kent

07-21-2010, 11:45 AM	#2
R2D2 Crazy Oil Sniffer Drives: MM 09 Yaris 5 Dr LB "Click" Join Date: May 2009 Location: ME Posts: 498	Nice work my friend! That's awesome economy. I too have noticed the Yaris LOVES heat to the point it helps to offset the use of AC. I just got two of my best tanks ever (46.2 and 45.4 mpg-5dr LB auto) in humid 80-90 deg weather with almost constant AC use. R2 __________________ "The howl was the sound of God’s casting pot, the morphing of my cells into shape, the forming of oceans out of molten premordial plasma. And I could feel it. I could cry for it. I could cry with it." -The Fitful One

07-21-2010, 12:05 PM	#3
KrazyDawg View User's Garage Drives: 08 3dr LB AT Join Date: Feb 2010 Location: SF Bay Area Posts: 151	Congratulations. So when are you going to get that Ecometer or Scangauge to post some higher numbers ;) __________________

07-22-2010, 01:26 AM	#8
bkrownd View User's Garage Drives: 2010 Yaris "5-door" Join Date: Mar 2009 Location: Upper Waiakea Forest Reserve Posts: 170	I'm stuck hovering around 44 MPG. I need to start riding my bike to work again to eliminate all those 2-5 mile MPG-killing commutes. Then I will join the "50 Club" as well... I'm surprised about the heat effect, since I always thought colder/denser air in the intake would give a bit more power? My car won't get any "heat assist" here, anyhow. __________________

08-04-2010, 11:47 AM	#12
STC "LibertyRides!" View User's Garage Drives: 2010 Yaris 3Dr LB \| 2020 Stang Join Date: Mar 2010 Location: State College, PA, USA Posts: 576	Update: Broke 50 MPG... again Hi Everyone: Just the other day, I was able to reach consecutively 50+ MPG... this time 52.166 MPG. No different techniques then last month... and the same tire pressure. The only difference is I took two trips (200mi and 100mi) instead of one. It has been very hot and muggy! The Yaris loves the heat and highway trips... I'm using the A/C still about 1/2 the time of my driving. It seems that using the A/C has not had any affect on fuel consumption... Hopefully, I can make three consecutive 50+ MPG tanks? The cooler weather will be coming soon, the Yaris does not perform as well in FE for the PA Winter Season. Cheers! Gas Tank mile increments (non-ethanol gas used): 1st Bar drop (8/8) > 112 mi (112) 2nd Bar drop (7/8) > 85 mi (197) 3rd Bar drop (3/4) > 40 mi (237) 4th Bar drop (5/8) > 73 mi (310) 5th Bar drop (1/2) > 83 mi (393) 6th Bar drop (3/8) > 60 mi (453) 7th Bar drop (1/4) > 55 mi (508) 8th Bar drop (1/8) > 0 Tank total : 508 miles Fuel used: 9.738 gallons MPG: 52.166 __________________ ~ Mark ~ 2010 Yaris 3-Dr Liftback, 5-Speed Manual, P185/60R 15, Bayou Blue Pearl I Love my YARIS - (Click below to see Gaslog): Most miles Tank: 538 tank/10.148 gal = 53.015 MPG / Most MPG: 54.95 MPG (ethanol) 425 tank/7.73 gal "The evils of government are directly proportional to the tolerance of the people." -- Frank Kent

07-22-2010, 03:51 AM	#9
firemachine69 School'er of hard knocks Drives: Silver Yaris 4dr. HB Join Date: Oct 2008 Location: Sudbury, On Posts: 556	Cold/dense air requires more fuel to combust, hence the increase in power. However, more fuel is detrimental to FE. Hence why hot air will benefit the Yaris in your quest for FE.

07-23-2010, 02:06 AM	#11
firemachine69 School'er of hard knocks Drives: Silver Yaris 4dr. HB Join Date: Oct 2008 Location: Sudbury, On Posts: 556	No, it really is that simple, that's the basics behind the "CAI", or "Cold Air Intake".

08-04-2010, 12:52 PM	#13
BailOut Steals terrorist's lunch View User's Garage Drives: 2007 Yaris Liftback Join Date: Mar 2007 Location: Reno, Nevada, USA Posts: 1,299	Well done! __________________ - Brian Share the Road I often carry 2 carpool passengers and mountain bikes or snowboards/skis over a 4,500 foot elevation difference. Click the graphic above to see my detailed mileage logs.

08-04-2010, 04:49 PM	#14
RED87 Drives: 2010 Yaris 5 Door Liftback Join Date: May 2010 Location: Salt Lake City Utah Posts: 2	Wow your getting better mileage than I am in my 2010 5 Door LB auto What state do you live in? I live in UTAH and I average 36-40 miles per gallon...

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