Complete engine failure or seizure on the 2014 Hyundai Sonata
3 crashes 3 of the 28 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 complete engine failure or seizure gets reported
Owners of the 2014 Hyundai Sonata report complete engine failure or seizure at a median of 80,000 miles. A quarter of the reports come in before 70,000 miles and a quarter after 90,000 miles, from 16 reports that carried an odometer reading.
A part like this is normally expected to survive 105,000 miles. It is the 10th most-reported problem on this model year.
The mileage distribution
The reported range runs from 60,000 miles at the tenth percentile to 115,000 miles at the ninetieth, a spread of 54,097 miles across the middle 80% of reports.
Reports bunched into a band this tight usually mean the component has a life of its own: it goes at roughly the same mileage regardless of who owns it.
6% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 59,903 miles | 68,500 miles | 80,000 miles | 88,000 miles | 114,000 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, 3 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 $4,500–$12,000 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.
This mode is classified as critical, which means a failure can leave the car unable to stop, steer, or stay out of the way of traffic. It is weighted accordingly in the risk score.
The same failure on other years
The same failure is reported on 8 model years of this car. It shows up earliest on the 2015, at a median of 60,000 miles, and latest on the 2017 at 140,000 miles.
By volume the 2011 carries the most reports, with 140; the 2014 has 28. 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.
Car has just over 30,000 miles on it. Started shaking while we were driving it. We took it into the dealership within 15 minutes. The dealership stated that the engine blew and that there was no oil in it. Oil was changed regularly and no oil pressure notification indicated low oil.
Tl* the contact owns a 2014 hyundai sonata. While driving approximately 60 MPH, two deer suddenly landed on the hood and two other deer collided against the driver side door. None of the frontal or side air bags deployed and the front driver and passenger seat belts did not restrain the occupants. No injuries were sustained and a police report was not filed. The vehicle was driven to the contact 's residence. Approximately four days later, the engine seized. The contact also mentioned that he received a recall notification for NHTSA campaign numbers: 17v226000 (engine and engine cooling) and 17v152000 (seat belts). The vehicle was towed to the dealer (autonation hyundai corpus christi texas, 6686 s padre island dr., corpus christi, tx, (361) 444-0156) where the engine was replaced per the recall; however, the cause of the air bag failure was not determined and the seat belt recall was not performed. The manufacturer was notified of the failure. The approximate failure mileage was 80,000.
Tl* the contact owns a 2014 hyundai sonata. While driving approximately 60 MPH, two deer suddenly landed on the hood and two other deer collided against the driver side door. None of the frontal or side air bags deployed and the front driver and passenger seat belts did not restrain the occupants. No injuries were sustained and a police report was not filed. The vehicle was driven to the contact 's residence. Approximately four days later, the engine seized. The contact also mentioned that he received a recall notification for NHTSA campaign numbers: 17v226000 (engine and engine cooling) and 17v152000 (seat belts). The vehicle was towed to the dealer (autonation hyundai corpus christi texas, 6686 s padre island dr., corpus christi, tx, (361) 444-0156) where the engine was replaced per the recall; however, the cause of the air bag failure was not determined and the seat belt recall was not performed. The manufacturer was notified of the failure. The approximate failure mileage was 80,000.
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 28 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 complete engine failure or seizure happen on the 2014 Hyundai Sonata?
Across 16 owner reports that included an odometer reading, half were filed by 80,000 miles. A quarter were filed before 70,000 miles and a quarter after 90,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is complete engine failure or seizure on the 2014 Hyundai Sonata?
28 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