No-start or intermittent start failure on the 2014 Hyundai Sonata
2 fires 2 of the 34 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.
When no-start or intermittent start failure gets reported
Owners of the 2014 Hyundai Sonata report no-start or intermittent start failure at a median of 50,000 miles. A quarter of the reports come in before 45,000 miles and a quarter after 80,000 miles, from 22 reports that carried an odometer reading.
A part like this is normally expected to survive 88,000 miles. It is the 9th most-reported problem on this model year.
The mileage distribution
The reported range runs from 20,000 miles at the tenth percentile to 125,000 miles at the ninetieth, a spread of 105,700 miles across the middle 80% of reports.
A spread this wide points at use rather than design. Towing, climate, service history and city mileage all move a failure like this, so the median is a weak guide to any individual car.
18% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 21,300 miles | 43,750 miles | 51,000 miles | 82,250 miles | 127,000 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, 2 a fire 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 $200–$1,800 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 17 model years of this car. It shows up earliest on the 2007, at a median of 20,000 miles, and latest on the 2001 at 155,000 miles.
By volume the 2011 carries the most reports, with 145; the 2014 has 34. 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.
Went to start the car all it did was go click. Tried different key fob, it started, replace both batteries in key fobs. Next week, wouldn't start, let it set for a bit, it started, week later on a saturday tried would not start, called hyundai 24 hr road service, they had trouble starting it. Next morning it started, 6 hrs later it wouldn't start, moved the shift lever from park to drive back to park like the road service guy did, it started. It started the next morning monday 6/22/15 took it to the dealer, said they couldn't find anything wrong, even though the battery shows a charge of 10 volts. I have a print out from pep boys showing that the battery needs replaced soon as it may not start a car. Which they were right. Hyundai corp. Could care less about me or my car, what I think, they sold a car is all they care about. Between me and my two sons we have purchased over the years 8 hyundai vehicles. Because what they are doing, or should I say not doing for me there dad, no more hyundai cars, hyundai does not stand by there cars, warrany their products. I'm asking if they will buy the car back, guess what no word from them, ms…
On three occasions my car would not start. After the second time it failed, I brought it in. Hyundai service department could not find anything wrong with it after hooking it up to the machine. No codes showed on the system check. They said they checked the battery. They said it could be the brake sensor, which was changed from a recall, so they said I have a new one, they would just adjust it and hopefully would fix the problem. Three days later on a saturday morning, the car would not start again. I brought it back in. They kept my car from 06/20 - 06/30 and could not find or reproduce the same problem. Updated 09/17/15*lj updated 11/07/2017*cn
I have a push button ignition. Three times this past week, my car has failed to start. When I press the button, all of the lights come on, but the engine does not turn over and when trying to press the break in conjunction with pressing the push start engine button, the break pedal is stiff and does not press downward. The third time this occurred, I was stranded for 1.5 hours. My brother came to give me a "jump" as he thought it was my battery only for sparks to come from my battery and for his cables to get so hot that they melted. I had my car owed to allen samuel's hyundai in north richland hills, tx the next morning only to be told that because they are unable to "recreate" the issue, there is nothing they can do. I also reached out to hyundai and was told that since there are no recalls, there is nothing they can do. This is a safety issue and because they are unable to recreate or do not have any recalls, then I am stuck with a lemon car. The second issue I have been facing (which has been ongoing) is the sensor in my gas tank recognizes my tank as "full" when I fill up with gas but this is not indicated on the gas hand…
Also reported on the 2014 Hyundai Sonata
Other engine problem
Other electrical problem
Other lighting problem
Other fuel system problem
Tail light, brake light or signal failure
Other powertrain problem
How far this goes
Complaints are voluntary, so 34 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 no-start or intermittent start failure happen on the 2014 Hyundai Sonata?
Across 22 owner reports that included an odometer reading, half were filed by 50,000 miles. A quarter were filed before 45,000 miles and a quarter after 80,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is no-start or intermittent start failure on the 2014 Hyundai Sonata?
34 reports have been filed with NHTSA, about 0.2 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