Go Back   FORD RAPTOR FORUM - Ford SVT Raptor Forums - Ford Raptor > GEN 1 (2010-2014) Ford SVT Raptor Forums > Ford SVT Raptor General Discussions [GEN 1]
Become a Supporting Member         Become a Supporting Vendor

Register to remove these ads.


Ford SVT Raptor General Discussions [GEN 1]

Fuel Consumption vs. Speed - A semi-scientific study of Raptor Fuel Economy


This is a discussion on Fuel Consumption vs. Speed - A semi-scientific study of Raptor Fuel Economy within the Ford SVT Raptor General Discussions [GEN 1] forums, part of the GEN 1 (2010-2014) Ford SVT Raptor Forums category!
Fuel consumption for the Raptor has been discussed frequently here, but I haven't seen anyone post information from a designed ...


User Tag List

Like Tree1Likes
  • 1 Post By TurboDog

Reply
 
LinkBack Thread Tools Display Modes
Old 11-28-2010, 02:03 PM   #1 (permalink)
Junior Member

 
Join Date: Oct 2010
Age: 56
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)

(Thread Starter)
Default Fuel Consumption vs. Speed - A semi-scientific study of Raptor Fuel Economy
Fuel consumption for the Raptor has been discussed frequently here, but I haven't seen anyone post information from a designed study. I don't have the resources to conduct a true scientific study, but did just complete a 3,700 mile road trip from Boston to Kansas and back for Thanksgiving and decided to take the opportunity to do a "semi-scientific" study.

My 6.2 Raptor had logged just over 4,700 miles when I began my trip, so probably wasn't completely broken in, but should be getting there. I started by "research" while driving through Indiana (yep, I was really bored ;)) with about 6,200 miles on the odometer.

Experiment #1 - Miles per Gallon vs. Miles per Hour


Objective: Determine relationship between ground speed and fuel consumption.

Conditions: Overcast, 41 degrees, wind light and variable

Method: For this "experiment" I recorded the MPG estimated by the Raptor's onboard computer at a given speed over a distance of 5 miles. Thanks to multiple construction zones I was able to evaluate speeds as low as 40 mph, and went as high as 75 mph on stretches of open road with light traffic. I completed multiple 5-mile sections at all speeds between 40 and 75 mph.

I determined my speed using my Garmin 755T GPS (my speedometer reads about 2 mph low, so I relied on the Garmin for a more accurate measurement), and maintained desired speed during the experiment using cruise control.

Results: [ATTACH=CONFIG]1326[/ATTACH]

Miles per Gallon for the Raptor decreased with increasing speed (DUH), ranging from 24.6 MPG at 40 MPH to 14.3 at 75 MPH. I had expected that MPG would decrease faster as speed increased, but the onboard computer indicated otherwise. Whether this is real, or results from the way the computer calculates mileage I can't tell. Using linear regression analysis of the observed MPG/MPH data, I would estimate the fuel consumption of my Raptor at various speeds to be:

MPH Estimated MPG
40 24.6
45 23.1
50 21.6
55 20.2
60 18.7
65 17.2
70 15.7
75 14.3

The question now is, "how accurate is the Raptor's computer's estimate of MPG?" To answer this, I compared the MPG reported by the computer to what I would get by manually calculating mileage at each fill up based on gallons used divided by distance traveled.

Experiment #2 - Computer MPG vs Hand Calculated MPG


Objective: Determine relationship between the Raptors computer estimated MPG and hand calculated MPG.

Conditions: Temps from 16 to 46 degrees, winds variable

Method: For this "experiment" I reset the MPG reading on the Raptor's computer each time I filled it with gas, and then at the next fill up compared the computer's estimated MPG for that tank of gas to what I calculated using miles traveled (from the odometer) to gallons consumed (from the fuel pump reading). This data was collected while driving on 2 lane and interstate highways in IA, NE, KS, IL, IN, OH, MO, PA, CT and MA with very little city driving. Now that I am back in Boston I will collect data to compare MPG in stop and go city driving, and will report that later.


Actual Computer
MPG MPG
15.7 15.6
15.1 15.9
15.9 16.2
14.7 15.2
15.8 16.1
17.0 17.3
16.2 16.5
16.1 16.8
16.4 16.9
17.8 17.8

16.1 16.4 Average

As you can see, the computer tended to over estimate MPG by an average of about 0.3 MPG compared to "hand" calculated mileage. Much closer than I was expecting, and pretty darned good. The MPG I obtained given the speeds I was driving during these long runs compares closely to what I observed in "Experiment 1" over the 5 mile segments, so I am confident that the mileage reported in "Experiment 1" is pretty close to accurate.

As they say, "your mileage may vary", but hopefully this will provide some perspective on what fuel consumption to expect from the Raptor.
Jimster58 likes this.




TurboDog is offline   Reply With Quote
Old 11-28-2010, 04:37 PM   #2 (permalink)
 
F150SVT's Avatar
Full Access Member

 
Join Date: Oct 2010
Location: Otsego, MI
Age: 50
Posts: 126
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)

Default
Welcome to the website TurboDog! Great first post!

I came up with similar mpg numbers at 65 and 75mph. I am suprised the Raptor actually got 24.6mpg at 40mph. Now if I could only drive 40mph on the freeway. Usually I am pushing 80mph. :mrgreen:


__________________
A bad day on the water is better than a good day at work!
F150SVT is offline   Reply With Quote
Old 11-28-2010, 05:34 PM   #3 (permalink)
Senior Member

 
Join Date: Oct 2011
Location: Magic Mountain
Posts: 7,682
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)

Default
Welcome to the forum and thanks for sharing your research with us. Great post!

You've illustrated clearly why my mileage is so poor. My freeway speed often exceeds your highest MPH :mrgreen:
MagicMtnDan is offline   Reply With Quote
Old 11-28-2010, 08:29 PM   #4 (permalink)
 
LVdezertdawg's Avatar
Full Access Member

 
Join Date: Jul 2010
Location: Henderson, NV
Age: 61
Posts: 886
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)

Default
Fantastic post and welcome to the board. Although most of my mph are under 60 but mpg is usually less than 10. Could have something to do with the sand rooster tails shooting from the wheel wells. Doing it in the dirt!!!!


__________________
17 avalanche Raptor in my driveway
LVdezertdawg is offline   Reply With Quote
Old 11-28-2010, 09:51 PM   #5 (permalink)
Senior Member

 
Join Date: Oct 2011
Location: Magic Mountain
Posts: 7,682
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)

Default
Originally Posted by lvdezertdawg View Post
FCould have something to do with the sand rooster tails shooting from the wheel wells. Doing it in the dirt!!!!
For sure. I checked my MPGs yesterday after 2 days in the sand and dirt and it said 10.4 :thumbsup: Running in Off-Road mode with TC off and the motor at redline will do that.
MagicMtnDan is offline   Reply With Quote
Old 11-29-2010, 09:36 AM   #6 (permalink)
 
KaiserM715's Avatar
Kaiser Söze

 
Join Date: Aug 2010
Location: Houston, TX
Posts: 8,579
Mentioned: 311 Post(s)
Tagged: 0 Thread(s)

Default
Welcome aboard!!

Originally Posted by TurboDog View Post
As you can see, the computer tended to over estimate MPG by an average of about 0.3 MPG compared to "hand" calculated mileage. Much closer than I was expecting, and pretty darned good. The MPG I obtained given the speeds I was driving during these long runs compares closely to what I observed in "Experiment 1" over the 5 mile segments, so I am confident that the mileage reported in "Experiment 1" is pretty close to accurate.

As they say, "your mileage may vary", but hopefully this will provide some perspective on what fuel consumption to expect from the Raptor.
I keep track of the mileage for every vehicle I own and so far my over all average calculated by hand is 13.0 mpg (mixed driving, mainly surface street commuting) versus 12.8 mpg as indicated by the computer. I have a little over 5k and mileage has steadily improved, so we will see what the next 5k has in store.


__________________
'10 Raptor - My build
'08 G8 GT
- sold
'04 MazdaSpeed Miata
'67 Jeep Kaiser M715 - sold
Join the Blue Ribbon Coalition . . . it's YOUR Public Land!
KaiserM715 is offline   Reply With Quote
Old 11-29-2010, 09:40 AM   #7 (permalink)
Senior Member

 
Join Date: Oct 2011
Location: Magic Mountain
Posts: 7,682
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)

Default
Kaiser, you need to drive more, faster, and do more offroading :mrgreen:
MagicMtnDan is offline   Reply With Quote
Old 11-29-2010, 10:24 AM   #8 (permalink)
 
KaiserM715's Avatar
Kaiser Söze

 
Join Date: Aug 2010
Location: Houston, TX
Posts: 8,579
Mentioned: 311 Post(s)
Tagged: 0 Thread(s)

Default
Originally Posted by MagicMtnDan View Post
Kaiser, you need to drive more, faster, and do more offroading :mrgreen:
I have a trip report coming up when I get my pics compiled. Dan, I wholeheartedly agree. But time and family commitments dictate otherwise most of the time, unfortunately.


__________________
'10 Raptor - My build
'08 G8 GT
- sold
'04 MazdaSpeed Miata
'67 Jeep Kaiser M715 - sold
Join the Blue Ribbon Coalition . . . it's YOUR Public Land!
KaiserM715 is offline   Reply With Quote
Old 12-06-2010, 05:16 PM   #9 (permalink)
 
GR8PMKN's Avatar
Full Access Member

 
Join Date: May 2011
Location: Texas
Age: 50
Posts: 147
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)

Default
Great Report TurboDog. My driving habits must be terrible. Gas on...Gas off I have had my Raptor for 2 months and 2000 miles now and at best it averages 10.9 MPG and I live in Kansas. Drove it to OKC and back about 180 miles each way from where I live on I-35 running 80-ish all the way down and back and still only averaged 11.2 MPGs on the long open road. But I see it as getting better mileage than the H2 (7 to 9 MPG's) it replaced. Anyway welcome to the group

Rick


__________________
Yeah it makes a little noise but what would you expect?

http://youtu.be/5YvwSdondaw">http://youtu.be/5YvwSdondaw" type="application/x-shockwave-flash" width="425" height="350">
GR8PMKN is offline   Reply With Quote
Old 12-06-2010, 11:40 PM   #10 (permalink)
 
Nv Guy's Avatar
Full Access Member

 
Join Date: Feb 2011
Location: Nor Nv
Posts: 840
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)

Default
Here is what I have found:

Comp Measured
15 14.37
14.1 13.88
16.2 15.51
16.8 15.38
17.5 17.02
15 14.69
16.7 15.97
16.4 15.68
15.7 14.75
17.1 17.58
15.1 14.29
16.5 15.93
15.8 15.15
16.4 16.44
16.5 15.9
16.5 16.17
16.4 15.71 80 MPH run
14.8 14.21 4WD @ 30-40 MPH

16.02 15.47 Overall Average
My finding are pretty close to T/D, in that the computer seems to over estimate the mileage, but that could be due to my simply adding a little more fuel to the tank.
Most of my mileage tends to be 70% freeway, remainder being in town. Not nearly enough off road! (Gotta work on that).
I have found that running over 70MPH tends to really hurt the mileage, as does running in 4WD @ 35-40 MPH in the snow.
Nv Guy is offline   Reply With Quote
Reply

Bookmarks


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




GM Truck Forum
Chevy Tahoe Forum
Dodge Ram Forum
Chevy Cobalt Forum
Chevy Tahoe Forum
FJ Cruiser Forum
Ford Truck Forum
88-98 GM Truck Forum
73-87 Gm Truck Forum
Ford Expedition Forum
Chevy Equinox Forum
Chevy Cruze Forum
Jeep Liberty Forum
Jeep Forum
Dodge Ram SRT10 Forum
Chrysler 200 Forum
Scion xD Forum
Scion xB Forum
Dodge Challenger Forum
SRT Forum
Nissan Titan Forum
Buick Enclave Forum
Land Rover Forum
Scion FR-S Forum
TRD Forum
Central US Mopars
Southeast Mopars
Cadillac CTS Forum
Oklahoma Dodge Ram Club
Softball Forum