Gas Mileage-how to fix? - Ford Focus Forum, Ford Focus ST Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST Forum > Ford Focus Tech Discussions > General Technical Chat

General Technical Chat This section is for technical discussions relating to general maintenance, electrical issues, engine trouble, and recalls.

Search This Forum | Image Search | Advanced Search    
Ford Focus Tire & Wheels FocusFanatics Merchandise

Reply
 
Thread Tools Display Modes
Old 07-08-2006, 11:15 AM   #1
ammorgan
Focus Enthusiast
 
Join Date: Apr 2006
Fan#: 34226
Location: Fort Worth
What I Drive: 2003 Dark Blue ZTS

Posts: 204
FF Reputation: 1 ammorgan Good Standing Member
Buy-Sell-Trade Rating: (1)
Gas Mileage-how to fix?

Our gas mileage seemed decent until we took it to the mechanic to get it fixed. The fill up before it went into the shop was 26 MPG, the fill up after we had only gotten 23 MPG.

I replaced the air filter yesterday, because I think I heard that that helps with gas usage.

Is there any other easy (cheap) fixes underneath the hood?

I'm going to fill up the car at a different station and see if maybe it has to do with that one particular station we've been buying gas at.


ammorgan is offline  
    Reply With Quote
Sponsored Links
Advertisement
 
Old 07-08-2006, 11:17 AM   #2
UnderEstimated
Focus Enthusiast
 
Join Date: Apr 2006
Fan#: 34085
Location: Oceanside, California, United States
What I Drive: 2013 Ford Focus SE Sedan

Posts: 76
FF Reputation: 1 UnderEstimated Good Standing Member
Buy-Sell-Trade Rating: (0)
Try changing your fuel filter. Also, try different brands of gas. Here, I get the best mileage with ExxonMobil and Chevron. Other brands normally yield me anywhere from 30-70 miles less to the tank.
__________________
.::2013 Ford Focus SE (Sport Package)
.::2014 BMW 335i M-Sport
UnderEstimated is offline  
    Reply With Quote
Old 07-08-2006, 11:34 AM   #3
awnuts
Focus Enthusiast
 
awnuts's Avatar
 
Join Date: Sep 2004
Fan#: 12680
Location: ABQ NM, United States
What I Drive: 2001 Red ZX3 with Zetec

Posts: 274
FF Reputation: 6 awnuts Good Standing Member
Buy-Sell-Trade Rating: (1)
also dont forget tire pressure its one of the biggest causes for poor mileage.
__________________
Magnaflow cat back, EBC sport rotors with red pads,Focus sport stress bar,Yokohama EVS tires,volant cai,screamin demon coil and wires. Red powder coated calipers,Focal 5 spoke tuner wheels deep chrome edge.
awnuts is offline  
    Reply With Quote
Old 07-08-2006, 11:58 AM   #4
ammorgan
Focus Enthusiast
 
Join Date: Apr 2006
Fan#: 34226
Location: Fort Worth
What I Drive: 2003 Dark Blue ZTS

Posts: 204
FF Reputation: 1 ammorgan Good Standing Member
Buy-Sell-Trade Rating: (1)
Is the fuel filter something easy to do?

I filled the car up at Valero this morning instead of Wal-Mart so maybe that will change.

Before we had to take it and get it fixed we got 29, 28, then 26 MPG. After we got it back from the repairs we've gotten 23 then 21 MPG.

That's pretty bad considering the car I used to have (93 geo prizm) got 21-23 MPG and it was 13 years old when I got rid of it!
ammorgan is offline  
    Reply With Quote
Old 07-08-2006, 06:22 PM   #5
ammorgan
Focus Enthusiast
 
Join Date: Apr 2006
Fan#: 34226
Location: Fort Worth
What I Drive: 2003 Dark Blue ZTS

Posts: 204
FF Reputation: 1 ammorgan Good Standing Member
Buy-Sell-Trade Rating: (1)
Could the age of the oil in the engine have anything to do with gas mileage?
ammorgan is offline  
    Reply With Quote
Old 07-08-2006, 07:16 PM   #6
Mastodon
Focus Enthusiast
 
Mastodon's Avatar
 
Join Date: Jun 2006
Fan#: 35775
Location: Memphis, TN
What I Drive: 2005 Pitch Black ST

Posts: 176
FF Reputation: 1 Mastodon Good Standing Member
Buy-Sell-Trade Rating: (1)
A 3mpg difference between tanks isn't something to worry about. It could simply be you filled up at a different station, the average temperature outside, more stop-and-go driving than usual or any number of things. If your average MPG drops off over a large number of tanks, then you may have an issue. Also, make sure you're dividing the number on your trip odometer by the number of gallons you put in it when you fill up. If you're just dividing by the 14 gallons the tank holds you'll never get an accurate number.
__________________
ST Crew #41
Mastodon is offline  
    Reply With Quote
Old 07-08-2006, 08:23 PM   #7
yahoo1z
Focus Enthusiast
 
yahoo1z's Avatar
 
Join Date: Jun 2006
Fan#: 36319
Location: New York
What I Drive: 00 focus zx3, 94 miata

Posts: 343
FF Reputation: 11 yahoo1z Great Standing Member
Buy-Sell-Trade Rating: (3)
maybe try those fuel addictives to clean the fuel system, and check the sparkplugs
__________________
cardomain.com/id/yahoo1z
sites.google.com/site/yaogarage
yahoo1z is offline  
    Reply With Quote
Old 07-08-2006, 08:39 PM   #8
fordblue72
Registered User
 
Join Date: Aug 2005
Fan#: 26701
Location: your moms house
What I Drive: Focus

Posts: 325
FF Reputation: 1 fordblue72 Good Standing Member
Buy-Sell-Trade Rating: (0)
WHAT kind of work did the MECHANIC do??
fordblue72 is offline  
    Reply With Quote
Old 07-09-2006, 06:42 AM   #9
allanzx3
Focus Enthusiast
 
Join Date: Mar 2006
Fan#: 33007
Location: Dartmouth, Nova Scotia
What I Drive: 2001 Liquid Grey ZX3 S2

Posts: 384
FF Reputation: 0 allanzx3 Newbie
Buy-Sell-Trade Rating: (0)
Sounds to me like you have a different issue goign on there then the one you took it to the mechanic for. Start with small things like checking spark plugs, air and fuel filter and such and they work your way up to checking sensors.
__________________
2001 Ford Focus ZX3 S2
2002 Mazda Protege5
allanzx3 is offline  
    Reply With Quote
Old 07-09-2006, 05:15 PM   #10
ammorgan
Focus Enthusiast
 
Join Date: Apr 2006
Fan#: 34226
Location: Fort Worth
What I Drive: 2003 Dark Blue ZTS

Posts: 204
FF Reputation: 1 ammorgan Good Standing Member
Buy-Sell-Trade Rating: (1)
Well we went from about 280 miles on 3/4ths of a tank of gas used and this last time we filled up we only got about 190 miles out of that tank of gas and we even let it go lower than 1/4th of a tank left. So the mileage has gone down considerably.

I filled the car up at a different gas station and I changed the air filter, still gotta run through this tank of gas before I can tell if there is a difference or not.

Maybe it is something simple like Murphys is putting water in their gas or something like that and switching to Valero gas will help that. Hopefully it's nothing that it needs to be taken to the shop for.

Before we took it to the dealership it got 29 then 28 then 26 MPG. The gas that was in the car when we got it fixed and shortly after, that tank got 23 MPG, then the tank after that only got 21 MPG. And I know before I even started tracking it online that we were getting about 270-280 miles before we had to fill up again.
ammorgan is offline  
    Reply With Quote
Reply

Bookmarks & Social Networks

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

Forum Jump


All times are GMT -5. The time now is 04:07 AM.


Copyright 2002-2014 FocusFanatics.com. All Rights Reserved : Terms of Use : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Acura TLX or Fiesta ST. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area.