2014 Hyundai Sonata Problems

What owners report

Owners of this model year most often describe engine problems: knocking and abnormal engine noise, stalling or loss of power while driving, low oil levels, and in many cases an engine that had to be replaced. A second frequent theme is fuel odors and leaks, several tied to the low-pressure fuel hose covered by recalls, and a third is rear brake light bulbs and sockets that overheat and melt. Complaints are spread across a wide mileage range, with many engine reports arriving between roughly 60,000 and 150,000 miles and some electrical and lighting reports appearing at much lower mileage.

1. 1
   Engine

   Engine knocking, stalling, and engine seizure

   • 217 complaints (29%)
   • median 88,065 mi at 6.1 yrs old (116 state mileage)
   • 20 mention a crash, fire or injury
   • owner-quoted repair $3,250 (median of 8 quotes)
   • filed 2014–2026

   Complaints describe a loud knocking or abnormal sound from the engine, followed by stalling, loss of power on the highway, or a vehicle that will not restart. Several owners say a mechanic or dealer found metal debris in the oil or a failed rod bearing and told them the engine needed to be replaced. Others report check engine lights, limp mode, and knock sensor codes, with some noting the engine had already been replaced once. Reports cluster from roughly 60,000 to 150,000 miles, with several under 90,000 miles.

   Recall 17V226000Recall 18V9340002 related service bulletins

   What to check: Listen for knocking at cold start and during a test drive, check the oil level and condition, and ask whether the knock sensor detection software update was applied. A failed oil consumption test is worth asking about directly.

   2 excerpts from owner complaints in NHTSA records

   “I have a 2014 Hyundai Sonata and my car kept shutting down on me. Every time it does that I turned it off than it came back on. All my lights on my dashboard comes on. It was also leaking oil. So when it happen the third time I was on the highway and I was going like 80mph but it felt like I was going 50mph, than my car slowed down and I pulled over and turned it off and when I tried to turn on it didn't come on but it had the clicking sound. …”

   NHTSA complaint #11320591, filed 2020-04, 96,000 miles

   “Hello! I bought a car at an auction, it had the crankshaft bearings turned and it was knocking. I decided to repair it myself in my workshop . When I disassembled it, all the bearings and crankshaft necks were erased there (I kept all the details) the connecting rod on the 3rd cylinder was black and the bearings were erased into dust. I repaired it myself, but it still doesn't sound right (but errors don't burn) . A friend told me about the problems associated with this model and I found out on the website that there is a review on the engine. …”

   NHTSA complaint #11514453, filed 2023-03, 105,145 miles
2. 2
   Fuel system

   Fuel odor or leak from the low-pressure fuel hose

   • 60 complaints (8%)
   • median 87,000 mi at 6.8 yrs old (25 state mileage)
   • 7 mention a crash, fire or injury
   • filed 2014–2026

   Owners report a strong gasoline smell, fuel visible under the hood, or fuel leaking, sometimes after a recall inspection was performed. Complaints describe the low-pressure fuel hose cracking and being replaced, and several note that recall parts were unavailable for a long period. In a few reports there was smoke or a fire in the engine bay linked by the owner to the fuel line. Mostly reported between about 57,000 and 120,000 miles, at various ages.

   Recall 22V312000Recall 20V121000Recall 18V934000

   What to check: Ask whether recalls 20V121000 and 22V312000 were completed and inspect the low-pressure fuel hose area under the hood for cracks or a fuel smell. Smell for gasoline after the car sits.

   2 excerpts from owner complaints in NHTSA records

   “My vehicles engine was replaced in october 2020 for a sudden engine stall. Now 5 months later a gas smell has come up very quick and strong. My initial search of my VIN number did not include my vehicle in a current open recall. As I searched further through the nhsta site for the complaint section and was promoted again to enter VIN number is when I can see my vehicle should be eligible due to my engine having to be recalled and replaced with faulty installation. …”

   NHTSA complaint #11407448, filed 2021-04, 99,546 miles

   “Experienced slight hesitation upon normal go stop driving rural and city roads. Service for NHTSA campaign id number 20v121000 number:189 performed at obrien Hyundai, ft. Myers fl, 7 aug 20. Tech showed me a blue strip which he claimed was used to detect presence of a gasoline leak when applied to suspected original gasoline tube, campaign number: 189. Tech then mentioned that result displayed no apparent leak at present time, but could not guarantee or rule out a future leak. …”

   NHTSA complaint #11344003, filed 2020-08, 58,000 miles
3. 3
   Electrical system

   Headlights dimming or cutting out with turn signal

   • 136 complaints (18%)
   • median 78,000 mi at 5.6 yrs old (77 state mileage)
   • 6 mention a crash, fire or injury
   • owner-quoted repair $1,500 (median of 5 quotes)
   • filed 2015–2026

   Owners describe the headlights flickering, briefly going out, or shutting off when the turn signal is used, sometimes returning on their own. Several point to the multi-function switch or steering column area, and some report that cruise control work is also intermittent. Others describe sudden electrical shutdowns with dashboard lights going dark and stiff steering. Wide range, from about 50,000 up to 150,000 miles.

   1 related service bulletin

   What to check: Test headlights, high beams, and the turn signal together at night or in a garage, and check that cruise control engages consistently. Ask whether the multi-function switch has been replaced.

   2 excerpts from owner complaints in NHTSA records

   “I was driving the vehicle on a highway going no more than 45 MPH and all the lights came on and it shut completely off. I tried to get a jump but it still didn't do anything. There was no engine lights or anything on my dashboard besides eco. The car hasn't had any issues at all. For some strange reason my steering wheel been locking a lot.”

   NHTSA complaint #11375665, filed 2020-11, 112,121 miles

   “2014 Sonata limited. Headlights flicker when using left blinker signal. Sometimes go off briefly. Tried different positions on multi witch seems to be worse on auto. Vehicle will do it when stationary as well as turning. Research this and see this has been a problem on Hyundai models as far back as 2009. Son has a 2013 has the same problem.”

   NHTSA complaint #11414855, filed 2021-05, 50,000 miles

Buying note. Engine condition matters most on this model year — check service history for the knock sensor and oil consumption remedies, listen for noise, and confirm both fuel hose recalls were completed. Have a mechanic inspect the fuel lines, rear lamp sockets, and steering column before buying.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.