Other fuel system problem on the 2012 Hyundai Elantra
1 crash 1 of the 9 reports for this failure mention a crash, a fire, an injury or a death. Those are the owner's words on the complaint form, not a verified finding, and one report can mention more than one.
Only 4 reports for this mode came with an odometer reading, which is too few for percentiles to mean anything. The page is here because someone linked to it; treat the figures as anecdotes, and see the full report for this year instead.
When other fuel system problem gets reported
There are 9 reports of other fuel system problem on the 2012 Hyundai Elantra, 4 with a mileage attached. That is too few to place the failure on the odometer with any confidence.
A part like this is normally expected to survive 90,000 miles. It is the 21st most-reported problem on this model year.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| — | — | 51,567 miles | — | — |
Read the 10th percentile as “one report in ten arrived this early”. Exact figures are shown in this table because it is the table of record; everywhere else on the site they are rounded to the precision the sample can carry.
What a percentile can and cannot tell you here
These five numbers describe the readings owners gave, in order. The median is the middle one: half the reports arrived below it. The 10th and 90th are the edges of the bulk of the distribution, and the distance between them is the part worth reading. A tight spread — say 70,000 to 95,000 miles — points at something that wears out on a schedule, and the schedule is knowable. A wide one, 20,000 to 190,000, points at a fault that hits some cars and never troubles others, which means the mileage on the listing in front of you tells you very little about your odds.
What these figures are not is a survival curve. Every reading here comes from a car whose owner filed a complaint, so the sample contains only failures: it cannot say what share of the fleet made it past 150,000 miles untouched, because those owners had nothing to report. Nor is the mileage the moment of failure — it is the odometer reading as recalled at the time of filing, which may be weeks later and is sometimes rounded to the nearest ten thousand by the person typing it.
Percentiles are shown at all only once 8 readings exist for the vehicle and mode. Below that the middle of a handful of numbers is noise wearing a decimal point, so the figures are withheld rather than dressed up.
What happens, and what it costs
Of these reports, 1 a crash is mentioned. Owners write their own complaints and the agency does not verify them, so read this as what the reports say happened rather than as a confirmed count.
Putting it right typically runs $300–$2,200 at an independent US shop. That range is an editorial estimate held in this site's failure-mode catalogue, not a figure from NHTSA, and it is a repair cost rather than a diagnosis cost.
The same failure on other years
The same failure is reported on 20 model years of this car. It shows up earliest on the 2020, at a median of 5,000 miles, and latest on the 2002 at 95,000 miles.
By volume the 2013 carries the most reports, with 20; the 2012 has 9. A mode that appears across most years of a model is usually a design choice rather than a bad batch.
If one year stands out to the left, that is the year to avoid; if the whole line sits at a similar mileage, this is wear rather than a defect in one production run.
Tick median reported mileage Solid middle half of reports Faint 10th to 90th percentile Colour how bad the failure is when it happens
What owners wrote
Verbatim from NHTSA complaint narratives, trimmed for length. The mileage is the one the owner gave.
I bought a brand new 2012 hyundai elantra on feb. 10, 2012. Within several weeks I noticed the gas disappearing so quickly so I began filling the tank and taking pictures. I bought this particular vehicle due to the fact it advertised 40 mi. Gal on highway and 29 city. I took it to the dealership, I was told to fill car and reset trip and drive on highway. I did as they said on several occasions before going back. The trip continued to read 18 MPH and approximately (as low as 10.9 and as high as 24.8 mpg) one of the mechanics (I guess he was a mechanic) took it for a ride, I waited; he was gone an hour. When he got back he said he drove 47 miles and got it to read 33 mpg in which he said he combined city and highway together. I have never got it to do that and I have been tracking it closely since I bought it. Also, the steering wheel squeals, I told them; they said it is nothing. The brakes (alloyed wheels) squeal after it rains, they said it is nothing. I smelled something coming from cabin filter, they said it is a big job to take apart to see what the smell is and they said they believed it is a dead animal in which I would…
I was accelerating to enter flowing traffic on highway 14 in washougal ,washington when the elantra blows a cloud of blue smoke out of the exhaust (burnt engine oil). The incident caused the vehicle behind me to slow down until the cloud cleared. This incident could have caused a accident if I was on a busy highway.this problem has happen to me twice before.I took the car into the dealer and they could not find the problem. There are forums on this problem @ forums.edmunds.com/discussion/13025/hyundai/elantra....updated 10-13-15 *bf. The dealer recommened the consumer use a higher grade of fuel. Updated 12/31/15. *jb updated 01/04/16.*jb
My car accelerate on its own without me pressing on the gas randomly. Some days it drives normally and other days I can feel the car accelerating on its own. It was so bad 2 days ago that when I got off the highway it was trying to accelerate into the car in front of me at a red light. I had by foot on the brake and the car was revving to 5000 rpms. I took it to hyundai who could not find a problem but charged me $250 to clean the throttle body.
Also reported on the 2012 Hyundai Elantra
No-start or intermittent start failure
Airbag warning light or occupant sensor fault
Other engine problem
Other brake problem
Other steering problem
Other electrical problem
How far this goes
This page is kept out of search results because 9 reports is not enough to publish percentiles from. It stays reachable because somebody looking at this exact car would rather see the reports than be told there are none.
Complaints are voluntary, so 9 is a floor and not a count of affected cars. Mileages are typed in by owners and cluster on round numbers. And the mode itself is assigned by software reading the complaint text, which is reliable in bulk and fallible one report at a time.
Questions this page answers
At what mileage does other fuel system problem happen on the 2012 Hyundai Elantra?
Across 4 owner reports that included an odometer reading, half were filed by 50,000 miles. A quarter were filed before — and a quarter after —. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is other fuel system problem on the 2012 Hyundai Elantra?
9 reports have been filed with NHTSA, about 0.1 per 1,000 vehicles. Complaints are voluntary, so this is a floor rather than a count of affected cars.
What this is and is not. These are the mileages at which owners chose to complain to a federal agency, which is not the same as the mileage at which the part fails on every car. It skews toward failures that happened outside warranty, cost real money, or frightened someone. It is still the only public dataset that carries failure mileage at all, and the shape of a few hundred readings is informative even when a single one is not. Methodology · JSON · this failure on other cars
Source Owner complaints and recall records published by the US National Highway Traffic Safety Administration, model years 1996–2027 Figures rebuilt Published by AtWhatMileage How every figure is computed