what's caused my mileage to drastically drop from 28 mpg to 15 mpg?

Asked by Oct 21, 2016 at 02:47 PM about the 2004 Hyundai Santa Fe GLS 2.7L

Question type: Maintenance & Repair

What parts cost to fix this. What pars do I need to
try to fix

6 Answers

10

Have you changed your driving or added weight inside the vehicle

94,755

When is the last time you did a complete tune-up on the car ???? are your under inflated ???

Check the air filter first. That's the most common cause.

47,115

Does the car have a lot of miles on it? If so it may be worn out but I would check the catalytic converter to see if it is plugged up. Like joemom says do a tuneup and check the air in your tires but those would probably only account for a 10% or so drop in mileage.

17,660

Also add some fuel injector cleaner to gas tank and clean throttle body with throttle body cleaner.

61,195

Is the transmission, if automatic, upshifting properly and into the highest gear? If not, that'll absolutely kill your gas mileage! Is the check engine light on? HTH. -Jim

Your Answer

Add photo

Related Questions

Santa Fe

Looking for a Used Santa Fe in your area?

CarGurus has 16,654 nationwide Santa Fe listings starting at $1,995.

ZIP:

Search Hyundai Santa Fe Questions

Hyundai Santa Fe Experts

#1 LouB
LouB
Reputation 2,980
#2 me29
me29
Reputation 2,830
#3 dandyoun
dandyoun
Reputation 900
View All

Related Models For Sale

Used Kia Sorento
477 Great Deals out of 36,185 listings starting at $1,995
Used Hyundai Tucson
197 Great Deals out of 23,605 listings starting at $2,490
Used Honda CR-V
810 Great Deals out of 59,368 listings starting at $1,200
Used Toyota Highlander
479 Great Deals out of 25,066 listings starting at $1,500
Used Toyota RAV4
643 Great Deals out of 61,990 listings starting at $2,450
Used Hyundai Sonata
605 Great Deals out of 51,051 listings starting at $1,300
Used Honda Pilot
463 Great Deals out of 19,638 listings starting at $599
Used Ford Explorer
937 Great Deals out of 74,004 listings starting at $750
Used Ford Escape
1,119 Great Deals out of 90,859 listings starting at $1,295
Used Nissan Murano
363 Great Deals out of 22,821 listings starting at $1,800
Used Chevrolet Equinox
1,262 Great Deals out of 65,891 listings starting at $1,600
Used Kia Sportage
232 Great Deals out of 19,977 listings starting at $795

Used Cars For Sale

2017 Hyundai Santa Fe For Sale
16 Great Deals out of 7,714 listings starting at $17,990
2016 Hyundai Santa Fe For Sale
31 Great Deals out of 979 listings starting at $14,795
2015 Hyundai Santa Fe For Sale
20 Great Deals out of 402 listings starting at $13,925
2014 Hyundai Santa Fe For Sale
18 Great Deals out of 505 listings starting at $13,500
2013 Hyundai Santa Fe For Sale
58 Great Deals out of 1,683 listings starting at $10,900