2015 Hyundai Sonata SE: Incorrect Gas Reading

Asked by 95LMKS Oct 21, 2022 at 04:59 PM about the 2015 Hyundai Sonata

Question type: Maintenance & Repair

Filled up my gas tank and drove literally drove approximately 9 miles and it
showed that I had already used a quarter of a tank of gas.
My gas reader and dashboard is all digital so I'm surprised by the sudden
incorrect reading.
Any suggestions?

1 Answer

10

Hi, Try this first ! This has happened to me on a few different vehicles. Even different makes. The solution was shared to me by a mechanic. Electronic fuel gauges use resistance as the method of measure. The contact points can get a film or become dirty inside the tank. My friend said that it's from cheaper gas a with high ethanol percentage, you can use a bottle of *Techron from you local auto parts store. Some times it takes 2. sounds odd right? Consider this: For me it happened first in 2006 when gas $ was very high. Now it happened again same thing, (2022) adding 10$ or 20$ not filling all the way with this high ethanol that was added to help the supply issues. The ethonol can be higher in the winter and from different sations. Now my vehicle is parked due to less driving. The gauge is always right around the same place. It's sticks. I had a quarter tank at a stop sing and the gauge began to drop, to empty My car died. That never happened before.. It's not that old. The modern gas pups and gauges are inside the tank and very expensive to work on. Kindly note that the gas inside cools the gas pump and it can overheat if your driving on a low talk all of the time. This is understandable because it's so expensive at some stations and we pass them. Modern gas pups and gauges were designed to not fail. They also were tested under, some what normal conditions. It is high ethonal that cuses the sticking, I have just been keeping my tank full as I can..... I hope this helps even 1 person :)

1 people found this helpful.

Your Answer:

CarGurus Experts

  • #1
    sumcon
    Reputation
    5,940
  • #2
    clifford
    Reputation
    2,220
  • #3
    toDumbToNotKnow
    Reputation
    2,070
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Hyundai Elantra
154 Great Deals out of 3,205 listings starting at $1,850
Used Honda Accord
37 Great Deals out of 907 listings starting at $2,799
Used Toyota Camry
53 Great Deals out of 954 listings starting at $2,212
Used Honda Civic
153 Great Deals out of 3,397 listings starting at $2,495
Used Hyundai Sonata Hybrid
4 Great Deals out of 72 listings starting at $6,499
Used Nissan Altima
26 Great Deals out of 669 listings starting at $2,000
Used Hyundai Tucson
85 Great Deals out of 2,175 listings starting at $1,591
Used Hyundai Santa Fe
66 Great Deals out of 1,539 listings starting at $4,400
Used Kia Optima
16 Great Deals out of 249 listings starting at $3,999
Used Toyota Corolla
120 Great Deals out of 1,947 listings starting at $1,995
Used Chevrolet Malibu
42 Great Deals out of 1,147 listings starting at $1,495
Used Dodge Charger
44 Great Deals out of 607 listings starting at $4,888
Used BMW 3 Series
72 Great Deals out of 1,176 listings starting at $1,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.