Want some real MPG data on 4.6L V8 and manual 5 spd? - Mustang Evolution

Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 2005-2010 Mustang GT



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 04-24-2013, 10:20 PM   #1
Registered User
Newbie
 
Join Date: Apr 2013
Location: Redding
Region: California
Posts: 8
Want some real MPG data on 4.6L V8 and manual 5 spd?

I live in REdding, CA and work in San Jose, CA area. about 250 miles...I drive this each week. Up til last week, I have been driving a 94 Mazda Miata for last 10 years (315,000 miles!). Started out getting 29-ish MPG and slowly dropped over time to about 25MPG. so for last 2+ years been living with 25MPG. I struggled buying the V8 vs V6 Mustang, but appeared I might get 25 under certain conditions. I gambled and took chance on 4.6l, manual, convertable 05 (19K miles on odemeter).

This Monday was my first test. Sunday PM I bought gas in Redding at about $3.46 per gallon (struggled to get tank full, had to baby pump-gas fill kept shutting off-this fill design SUCKS BAD-Ford should be ASHAMED!!!) and drove to my house, then next morning hit freeway (I-5). once I got up to 70MPH, reset MPG, only ONCE during entire trip. THen I changed over to bar graph data mode.

Maintained about 23.5MPG (to my shock), some up and down due to rolling hills for first 30 miles. then leveled out, and about 60 miles out I stopped for coffee, then back on freeway. Stopped once more in Williams, about 100 miles out. then freeway again.

monitoring MPG and bar graph, I noticed once I hit flat ground the MPG started climbing with time. by the time I stopped in Vacaville for gas I had driven EXACTLY 153.2 miles, 6.2 gallons reported as used, 26.0 MPG!!! Amazing! (BTW, I took photos of speedometer at regular intervals for record keeping,noting trip meter, MPG and gallons used-also gas pump I filled up at.)


Actual fill-up was 6.061 gallons (at $3.89 per gallon), so I actually got 25.32MPG (remember, i RESET the MPG after i drove to get gas and hit freeway). (Again, had to fight to fill up tank BAD).


CONDITIONS;

temp 65-75 F
wind = ~0
elevation - 500Ft above sea level
Fuel = Arco, 87 octain, summer blend ethynol.

Observations:

1. any stopping resutls in drop in MPG. So appears simply momentium of getting mass moving is hard on MPG (Duh!)
2. driving at 70 vs 75 mph appears to make big difference, as much as 3 MPG. I will try this next week.
3. watching and adjusting using bar graph indicator helps. (I used it for surface street driving also, helps alot)
4. Keeping RPMs below 2K makes huge difference. SHort shifting!

the balence of trip is traffic driving, some bumper to bumper, also surface streets. Even so, still was 23 by time I hit work, with new tank of gas. SHould not this week, all surface street, about 28 miles from work to apptment I stay in each day, still getting 20MPG.

I still am considering trading this in on V6 auto convertable, if I could get 29mpg, might be worth it...appears to have almost the same HP at similar torque...

I will update this as I get more data.
Supercommuter is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 04-24-2013, 10:46 PM   #2
Registered Member
Regular
 
MidnightBlueGT's Avatar
 
Join Date: Apr 2013
Location: Charlotte
Region: North Carolina
Posts: 3,887
Really went in depth for the mpg thing. I avg about 22 mpg
MidnightBlueGT is offline   Reply With Quote
Old 04-24-2013, 11:28 PM   #3
ME Bloodhound
Staff
 
Soccerluvr4's Avatar
 
Join Date: Feb 2012
Location: Sacramento/Bay Area
Region: California
Posts: 14,672
Damn, i must be doing something wrong (or right) since i'm only getting 12.5
__________________

Bullitt build paused pending graduation

HID end all thread
Soccerluvr4 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 04-24-2013, 11:32 PM   #4
Sad Panda
Staff
 
silverskoundrel's Avatar
 
Join Date: Aug 2012
Location: TX
Region: Texas
Posts: 5,630
Turn the gas nozzle at either a 90 degree angle or completely upside down and fill at top speed lol
__________________
@silverskoundrel
05 TL Mustang Base (the silverskoundrel) - sold
05 TL Mustang GT - sold
98 UA Mustang GT - sold
10 CI Mustang GT - slow
silverskoundrel is offline   Reply With Quote
Old 04-24-2013, 11:41 PM   #5
Registered Member
Regular
 
MidnightBlueGT's Avatar
 
Join Date: Apr 2013
Location: Charlotte
Region: North Carolina
Posts: 3,887
Quote:
Originally Posted by Soccerluvr4 View Post
Damn, i must be doing something wrong (or right) since i'm only getting 12.5
Daily driving i also shift really low rpms and granny it lol
MidnightBlueGT is offline   Reply With Quote
Old 04-24-2013, 11:47 PM   #6
ME Bloodhound
Staff
 
Soccerluvr4's Avatar
 
Join Date: Feb 2012
Location: Sacramento/Bay Area
Region: California
Posts: 14,672
Quote:
Originally Posted by MidnightBlueGT View Post
Daily driving i also shift really low rpms and granny it lol
I shift really low also, and have been trying to granny it lately. But i still seem to get bad mileage. Might have to check the plugs. What rpm do you usually cruise in? Oh and i drive 100% city miles.
__________________

Bullitt build paused pending graduation

HID end all thread
Soccerluvr4 is offline   Reply With Quote
Old 04-24-2013, 11:51 PM   #7
Registered Member
Regular
 
MidnightBlueGT's Avatar
 
Join Date: Apr 2013
Location: Charlotte
Region: North Carolina
Posts: 3,887
Quote:
Originally Posted by Soccerluvr4 View Post
I shift really low also, and have been trying to granny it lately. But i still seem to get bad mileage. Might have to check the plugs. What rpm do you usually cruise in? Oh and i drive 100% city miles.
I do a mixture of both. And no more than 3 when trying to conserve gas and i don't go above 60mph. Unless i got the urge to let the ponies free.
MidnightBlueGT is offline   Reply With Quote
Old 04-24-2013, 11:59 PM   #8
Registered Member
Regular
 
Silver06GT's Avatar
 
Join Date: Mar 2013
Location: Canton
Region: Michigan
Posts: 78
Gas mileage? Whats that?

Very interesting write up though! Is the car bone stock? If it is I'm guessing you've got 3.55 gears.
Silver06GT is offline   Reply With Quote
Old 04-25-2013, 12:37 AM   #9
Registered Member
Regular
 
Join Date: Dec 2012
Location: Shelby
Region: Michigan
Posts: 31
I get 17 and 22ish all day. Pretty much baby it but not the greats gas car
Bakiebruno5 is offline   Reply With Quote
Old 04-25-2013, 02:00 AM   #10
Registered Member
Regular
 
tc x 4's Avatar
 
Join Date: Jan 2012
Region: Indiana
Posts: 3,783
Quote:
Originally Posted by Soccerluvr4
Damn, i must be doing something wrong (or right) since i'm only getting 12.5
Your doing it right.
tc x 4 is offline   Reply With Quote
Old 04-25-2013, 02:19 AM   #11
Registered Member
Regular
 
Terminator's Avatar
 
Join Date: Nov 2011
Region: California
Posts: 983
I remember those days 22+ mpg lol now I'm stuck at 16 or less -_-
Terminator is offline   Reply With Quote
Old 04-25-2013, 07:24 AM   #12
Registered Member
Regular
 
Join Date: Apr 2012
Location: Lakeland
Region: Florida
Posts: 1,699
Send a message via AIM to Borii
That is advertised MPG, why so surprised?

The fill system is fine, just get yours fixed. It is a problem many newer cars encounter here and there.

Even at 440 crank (estimated with an 18% loss due to 4.10 gears), I still get 23-26 MPG highway (after my latest dyno tune). But just as you described, the minute there is a slight incline, the MPG tanks lol
__________________
SOLD - 06 GT 371WHP/332WTQ


Sold - 1998 Camaro SS
Sold - 2001 Audi S4
Borii is offline   Reply With Quote
Old 04-25-2013, 07:53 AM   #13
Registered Member
Regular
 
DaBluedude's Avatar
 
Join Date: Oct 2008
Region: Canada
Posts: 1,996
Not bad numbers. But as a tip, that ethanol blend crap will also hurt fuel economy. On normal premium I get nearly 30mpg highway. On ethanol blends about 24. Cars throttle response feels like crap too.
__________________
2003 Mach 1
DaBluedude is offline   Reply With Quote
Old 04-25-2013, 07:59 AM   #14
Registered Member
Regular
 
Join Date: Apr 2012
Location: Lakeland
Region: Florida
Posts: 1,699
Send a message via AIM to Borii
Quote:
Originally Posted by DaBluedude View Post
Not bad numbers. But as a tip, that ethanol blend crap will also hurt fuel economy. On normal premium I get nearly 30mpg highway. On ethanol blends about 24. Cars throttle response feels like crap too.
Correct. Ethanol in theory was supposed to be cheap fuel. It is now waaaaaayyyyyy more than regular fuel but it is only cheaper in some places because state and federal subsidy to offset the gaff that has become ethanol. You get a little boost in power but it is absolutely worse MPG.
__________________
SOLD - 06 GT 371WHP/332WTQ


Sold - 1998 Camaro SS
Sold - 2001 Audi S4
Borii is offline   Reply With Quote
Old 04-25-2013, 08:18 AM   #15
Registered Member
Regular
 
Boomdizzle's Avatar
 
Join Date: Feb 2013
Location: Cincinnati
Region: Ohio
Posts: 681
Not bad numbers. I average about 19-20 in the city with frequent stomps on the gas and right around 23-24 on the highway. Usually average about 300-330 miles per tank which is fine with me.
__________________
Torque: It's like crack for your right foot
Boomdizzle is offline   Reply With Quote
Old 04-25-2013, 08:19 AM   #16
Registered Member
Regular
 
Join Date: Apr 2012
Location: Lakeland
Region: Florida
Posts: 1,699
Send a message via AIM to Borii
I pull between 200-220 Per tank Averaging 13.1 this tank.
__________________
SOLD - 06 GT 371WHP/332WTQ


Sold - 1998 Camaro SS
Sold - 2001 Audi S4
Borii is offline   Reply With Quote
Old 04-25-2013, 02:06 PM   #17
Registered Member
Regular
 
Rosco's Avatar
 
Join Date: Jan 2011
Location: La Verne
Region: California
Posts: 535
I get about 17 city, 22 highway with 3:73s. I shift typically at 2800. That's also in a 98.
__________________
1998 Bright Atlantic Cobra - 3:73's, BBK ls, Pro 5.0, 96 Cobra STB, Borla XR-1 Catback, Custom Catch Can, Spec clutch, MM Firewall adj, FRPP wires, RSD, Spoiler delete, 245/275 BF Goodrich g sports on chrome 95 cobra r's
1998 V6 Mustang : SOLD!
Rosco is offline   Reply With Quote
Old 04-25-2013, 07:05 PM   #18
Registered Member
Regular
 
UltArc's Avatar
 
Join Date: Sep 2012
Region: Ohio
Posts: 1,782
Quote:
Originally Posted by Supercommuter
I live in REdding, CA and work in San Jose, CA area. about 250 miles...I drive this each week. Up til last week, I have been driving a 94 Mazda Miata for last 10 years (315,000 miles!). Started out getting 29-ish MPG and slowly dropped over time to about 25MPG. so for last 2+ years been living with 25MPG. I struggled buying the V8 vs V6 Mustang, but appeared I might get 25 under certain conditions. I gambled and took chance on 4.6l, manual, convertable 05 (19K miles on odemeter).

This Monday was my first test. Sunday PM I bought gas in Redding at about $3.46 per gallon (struggled to get tank full, had to baby pump-gas fill kept shutting off-this fill design SUCKS BAD-Ford should be ASHAMED!!!) and drove to my house, then next morning hit freeway (I-5). once I got up to 70MPH, reset MPG, only ONCE during entire trip. THen I changed over to bar graph data mode.

Maintained about 23.5MPG (to my shock), some up and down due to rolling hills for first 30 miles. then leveled out, and about 60 miles out I stopped for coffee, then back on freeway. Stopped once more in Williams, about 100 miles out. then freeway again.

monitoring MPG and bar graph, I noticed once I hit flat ground the MPG started climbing with time. by the time I stopped in Vacaville for gas I had driven EXACTLY 153.2 miles, 6.2 gallons reported as used, 26.0 MPG!!! Amazing! (BTW, I took photos of speedometer at regular intervals for record keeping,noting trip meter, MPG and gallons used-also gas pump I filled up at.)

Actual fill-up was 6.061 gallons (at $3.89 per gallon), so I actually got 25.32MPG (remember, i RESET the MPG after i drove to get gas and hit freeway). (Again, had to fight to fill up tank BAD).

CONDITIONS;

temp 65-75 F
wind = ~0
elevation - 500Ft above sea level
Fuel = Arco, 87 octain, summer blend ethynol.

Observations:

1. any stopping resutls in drop in MPG. So appears simply momentium of getting mass moving is hard on MPG (Duh!)
2. driving at 70 vs 75 mph appears to make big difference, as much as 3 MPG. I will try this next week.
3. watching and adjusting using bar graph indicator helps. (I used it for surface street driving also, helps alot)
4. Keeping RPMs below 2K makes huge difference. SHort shifting!

the balence of trip is traffic driving, some bumper to bumper, also surface streets. Even so, still was 23 by time I hit work, with new tank of gas. SHould not this week, all surface street, about 28 miles from work to apptment I stay in each day, still getting 20MPG.

I still am considering trading this in on V6 auto convertable, if I could get 29mpg, might be worth it...appears to have almost the same HP at similar torque...

I will update this as I get more data.
Check out www.ecomodder.com. or its on my Sig, I track fuel their, fully.com, and fueleconomy.gov. Ecomodder may be able to help. There are a lot of great ideas, and like me, a lot of people who just want to fix the stupid mistakes the auto manufacturers made-grilles, under bodies, so on.

Look forward to following this.
__________________
2012 Mustang EPA: 19/29
2012 AeroStang: 40/46

My sponsor, Tokkyo Nutrition, offers 50% off your entire order with the code "PowerHouse"
UltArc is offline   Reply With Quote
Old 04-29-2013, 10:02 PM   #19
Registered User
Newbie
 
Join Date: Apr 2013
Location: Redding
Region: California
Posts: 8
@DaBlueDude

Yes, my car is bone stock, light metalic blue-looks like chick car. I need to man it up if I keep it.


INSTALLMENT 2: Idling!

Took a phone call, stopped in parking lot to talk. Do this often, in California talking on phone = ticket.

WHile chatting, I left motor running. Call lasted 33 minutes. Car had dropped 1MPG during call, from 20 to 19. Never recovered on that tank.
Supercommuter is offline   Reply With Quote
Old 04-30-2013, 10:14 AM   #20
Registered Member
Regular
 
S197STANG's Avatar
 
Join Date: Mar 2011
Location: San Antonio
Region: Texas
Posts: 178
I average 28 to 30 depending on the tune I run, type of fuel, and of course driving habits. I drive about 300 HWY miles a week so I feel your pain but I wouldn't think twice about trading mine in and I know others would vouch for this!!
S197STANG is offline   Reply With Quote
Old 04-30-2013, 11:21 AM   #21
Registered Member
Regular
 
Cmusstang19's Avatar
 
Join Date: Jan 2013
Location: Groton
Region: Connecticut
Posts: 47
I had to drive from Texas to Connecticut and through out Alabama and I believe Missouri I averaged 27-28mpg (after switching to shell gas) going about 75-80 the whole time, I only have intake, tune and exhaust, before and after those states I averaged 25-26 but either way I was shocked
Cmusstang19 is offline   Reply With Quote
Old 05-01-2013, 10:38 PM   #22
Registered Member
Regular
 
B52Bombardier's Avatar
 
Join Date: Mar 2013
Location: Niceville
Region: Florida
Posts: 72
Quote:
Originally Posted by S197STANG View Post
I average 28 to 30 depending on the tune I run, type of fuel, and of course driving habits. I drive about 300 HWY miles a week so I feel your pain but I wouldn't think twice about trading mine in and I know others would vouch for this!!
Wow, I would love to see above 25...28 - 30 would be OUTSTANDING!
B52Bombardier is offline   Reply With Quote
Old 05-01-2013, 10:54 PM   #23
Registered Member
Regular
 
S197STANG's Avatar
 
Join Date: Mar 2011
Location: San Antonio
Region: Texas
Posts: 178
I have 3:31's so that could be a reason for the higher gas mileage plus the bolt ons I have. but none the less It still surprises me. My milage is all hwy usually traveling around 70 to 75 since the mph fluctuates.
S197STANG is offline   Reply With Quote
Old 05-02-2013, 10:52 AM   #24
Registered Member
Regular
 
Davo_281GT's Avatar
 
Join Date: Feb 2013
Location: Bogalusa
Region: Louisiana
Posts: 326
Damn!!! I thought my 132 miles a day was rough.....I average 20mpg, 310-330 per tank. That's cruising at 75-80mph daily.
Davo_281GT is offline   Reply With Quote
Old 05-03-2013, 11:05 AM   #25
Registered Member
Regular
 
Join Date: Dec 2012
Region: Maryland
Posts: 24
Around town, I average about 21.5 if I drive moderately. If I baby it which I tested this week, I averaged 24. 3.55 gears, airaid cai, and 87 hybrid tune. I really tried the OP's advice on short shifting and keeping rpms below 2k. Plus it also helps with warmer weather coming and the car warming up significantly faster.
stang2008 is offline   Reply With Quote
Old 05-04-2013, 09:13 AM   #26
Registered Member
Regular
 
UltArc's Avatar
 
Join Date: Sep 2012
Region: Ohio
Posts: 1,782
Quote:
Originally Posted by stang2008 View Post
Around town, I average about 21.5 if I drive moderately. If I baby it which I tested this week, I averaged 24. 3.55 gears, airaid cai, and 87 hybrid tune. I really tried the OP's advice on short shifting and keeping rpms below 2k. Plus it also helps with warmer weather coming and the car warming up significantly faster.
The warm weather helps a LOT of ways.
__________________
2012 Mustang EPA: 19/29
2012 AeroStang: 40/46

My sponsor, Tokkyo Nutrition, offers 50% off your entire order with the code "PowerHouse"
UltArc is offline   Reply With Quote
Old 05-19-2013, 03:32 AM   #27
Registered Member
Regular
 
GTgorilla's Avatar
 
Join Date: May 2013
Location: San Diego
Region: California
Posts: 41
12.5 mpg here.
GTgorilla is offline   Reply With Quote
Old 05-19-2013, 08:46 AM   #28
Registered Member
Regular
 
Join Date: Dec 2012
Region: Maryland
Posts: 24
Quote:
Originally Posted by GTgorilla View Post
12.5 mpg here. But I drive my car the way I believe it was meant to be driven.
What do you have done to your car? All city?
stang2008 is offline   Reply With Quote
Old 05-20-2013, 08:44 AM   #29
Registered Member
Regular
 
maldog's Avatar
 
Join Date: Jun 2012
Region: Nevada
Posts: 1,563
That's a kool write up.

I run 91 tune and get 16 City and about 22 Hwy my computer says I have 325 miles till empty when I fill up.

Sorry guys, but I've never had a issue filling my Stang up with fuel. She takes it like a cheap whore on nickel night.
__________________
2006 Mustang GT Premium RedFire. CAI, SLP Loudmouth, SCT Progammer, 5 speed manual trans. My other car is a CORVETTE!
maldog is offline   Reply With Quote
Old 05-20-2013, 11:58 AM   #30
Registered Member
Regular
 
Davo_281GT's Avatar
 
Join Date: Feb 2013
Location: Bogalusa
Region: Louisiana
Posts: 326
Quote:
Originally Posted by maldog View Post
That's a kool write up.

I run 91 tune and get 16 City and about 22 Hwy my computer says I have 325 miles till empty when I fill up.

Sorry guys, but I've never had a issue filling my Stang up with fuel. She takes it like a cheap whore on nickel night.

+1
Davo_281GT is offline   Reply With Quote
Old 05-20-2013, 12:18 PM   #31
Registered Member
Regular
 
S197STANG's Avatar
 
Join Date: Mar 2011
Location: San Antonio
Region: Texas
Posts: 178
Quote:
Originally Posted by maldog View Post
That's a kool write up.

I run 91 tune and get 16 City and about 22 Hwy my computer says I have 325 miles till empty when I fill up.

Sorry guys, but I've never had a issue filling my Stang up with fuel. She takes it like a cheap whore on nickel night.
lol...+1000000 on filling up!!
S197STANG is offline   Reply With Quote
Old 05-22-2013, 09:13 PM   #32
Registered Member
Regular
 
RedSleeper's Avatar
 
Join Date: May 2013
Location: Austin
Region: Texas
Posts: 417
Ohh I forgot!

I took a picture of my mpg. Lol
29.9 mpg cruising on 70.

No bs there.
But it does go down to 26mpg when I'm in curves, and hills.
Straight, flat road. No problem doing 29mpg lol
__________________
Loving the days when you travel down to Mexico to push your car to the limits!
RedSleeper is offline   Reply With Quote
Old 05-22-2013, 11:04 PM   #33
ME Bloodhound
Staff
 
Soccerluvr4's Avatar
 
Join Date: Feb 2012
Location: Sacramento/Bay Area
Region: California
Posts: 14,672
And I'm over here like, I've never touched 14s lol
__________________

Bullitt build paused pending graduation

HID end all thread
Soccerluvr4 is offline   Reply With Quote
Old 05-22-2013, 11:09 PM   #34
Registered Member
Regular
 
RedSleeper's Avatar
 
Join Date: May 2013
Location: Austin
Region: Texas
Posts: 417
Quote:
Originally Posted by Soccerluvr4 View Post
And I'm over here like, I've never touched 14s lol
Kinda funny.
My insurance's higher, but my mpg saves me some money.
Your mpg low more $, but insurance low.
__________________
Loving the days when you travel down to Mexico to push your car to the limits!
RedSleeper is offline   Reply With Quote
Old 05-22-2013, 11:11 PM   #35
ME Bloodhound
Staff
 
Soccerluvr4's Avatar
 
Join Date: Feb 2012
Location: Sacramento/Bay Area
Region: California
Posts: 14,672
Quote:
Originally Posted by RedSleeper View Post

Kinda funny.
My insurance's higher, but my mpg saves me some money.
Your mpg low more $, but insurance low.
Insurance is only low because its on basic coverage. If I had full coverage it would be $250+ per month. 18, no tickets or accidents. about $100 per month
__________________

Bullitt build paused pending graduation

HID end all thread
Soccerluvr4 is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 2005-2010 Mustang GT

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are On
Refbacks are Off


» Like Us On Facebook



05:14 PM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.