2018 Hyundai Sonata Hyundai Sonata 2018

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2018 Hyundai Sonata 4dr Sedan

185-horsepower 2.4L I4 6-speed shiftable automatic FWD

Hyundai Sonata in Newfoundland / Lab., Canada
Dec 2017 - Jun 2022
Aug 2021

45880 mi
LH side ball joint 
Hyundai Sonata in Minnesota, United States
Feb 2018 - Jul 2019
Jan 2019

8500 mi
Car would not start under 7F. If sitting outside for more than several hours, the car will not start. All systems will turn on, such as fan blower, lights, radio, bluetooth, etc but car wouldn't click. Car would not jump to start either. Had to be towed to dealer. Dealer couldn't replicate issue unless car sat outside, then they claimed starter had bad spots in it and replaced starter. Car would not start AGAIN in temperatures under 7F. Same exact symptoms as last time. Brake pedal hard as well. The car had to be towed AGAIN to the dealership. This time the inhibitor switch was replaced after dealership replicated the issue. Because the temperatures started to rise we do not actually know if this resolved the issue. We will find out this December or January 2020. 

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2017 Hyundai Sonata 4dr Sedan

185-horsepower 2.4L I4 6-speed shiftable automatic FWD

Hyundai Sonata in Massachusetts, United States
Sep 2017 - Aug 2023
Jun 2017

1019 mi
The dealer had their body shop repair and paint damaged passenger side rocker panel. 
Sep 2017

6000 mi

US $148
Slow leak in rear passenger side tire. Dealer replaced the tire. 
Mar 2018

11850 mi
Car was pulling to the right. Four wheel alignment performed by dealer under 12 month, 12,000 mile adjustments warranty. 
Jun 2018

16000 mi

US $25
Right front tire blew while driving. Tire was successfully repaired. 
Hyundai Sonata in Massachusetts, United States
Feb 2017 - Jan 2022
Jun 2017

4100 mi
Rust at edge of hood area with no damage. Failure of factory paint job. Brought car to the dealer on June 7th and service manager took pictures and said that he would check with Corporate headquarters and get back to me in 48 hours; I am still waiting! 
Nov 2018

20850 mi

US $1
Nut fell off the parking brake cable. Installed a new nut + extra locking nut so the nut could not vibrate off. It was easy to fix and less of a hassle than make an appointment with the dealer. Clunking in right rear from lower shock absorber when going over bumps. Tightened shock absorber bolt and clunking stopped. Fixed it myself. 
Sep 2020

37243 mi

US $36
Rear trunk latch failure. Hyundai recall in effect after I replaced the trunk latch myself. Having observed on the Sonata forum many failures, I elected to get a NON-OEM replacement from Amazon and replace it myself. It was easier and quicker to replace the latch myself than schedule an appointment with dealer. 
Hyundai Sonata in Oregon, United States
Feb 2018 - Mar 2018
Mar 2018

29500 mi
Transmission was replaced after fighting with Hyundai for 7 months and 15,000 miles and many repairs to try fixing the problem. Some of the issues still are there and eventually will damage this transmission again. Hyundai refuses to find or fix issues unless there is a code in the system or check engine light is on. 
Hyundai Sonata in Missouri, United States
Mar 2017 - Jun 2022
Jun 2018

15000 mi
Side warning light came on several times, with note to see dealer if it happened. 
Hyundai Sonata in Ontario, Canada
May 2017 - Jun 2022
Mar 2021

66960 mi

C $1000
VCM on engine intake failed and was replaced. Just outside of 100,000 warranty 

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2016 Hyundai Sonata 4dr Sedan

185-horsepower 2.4L I4 6-speed shiftable automatic FWD

Hyundai Sonata in Massachusetts, United States
May 2016 - Mar 2018
Jul 2017

26000 mi
Scanned and found code P107500 Camshaft position actuator relay circuit performance fault in active state. Vehicle was idling high. 
Hyundai Sonata in New York, United States
Nov 2015 - Jun 2022
Mar 2018

22000 mi
O2 sensor. Detected by Bluelink. 
Hyundai Sonata in Ontario, Canada
Mar 2017 - Jun 2018
Jun 2018

24180 mi

C $350
Calipers started seizing and required servicing. 
Hyundai Sonata in Ontario, Canada
Mar 2018 - Jun 2022
Aug 2020

18600 mi

C $310
Replaced Car Battery 
Jun 2022

25420 mi

C $11
Replaced bulb - Left Rear Brake Light 
Hyundai Sonata in Texas, United States
May 2016 - Jun 2022
Jun 2022

31000 mi

US $332
Replaced original 5yr old battery 

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2016 Hyundai Sonata 4dr Sedan

154-horsepower 2.0L I4 Plug-in Hybrid 6-speed shiftable automatic FWD

Hyundai Sonata in California, United States
Nov 2015 - Dec 2018
Mar 2016

7000 mi
Fuel System - Gas Tank would not open and emergency release didn't open tank. had to take to dealer to fix 
Mar 2017

30000 mi
Seatbelt retractor broken. Replacement part ordered 
Sep 2017

37000 mi
EV Battery and Charger completely died while driving on highway. Major accident risk. Hyundai had to replace entire EV battery and charging assembly, as well as starter battery 
Hyundai Sonata in California, United States
Jul 2017 - Jan 2018
Aug 2017

16600 mi
Hybrid Battery stopped charging. Parts shipped from S Korea. Problem fixed after 41 days in shop. 
Dec 2017

24000 mi
Fuel filler neck was replaced, under warranty. It was a known TSB, and they had previously inspected it and found no issues. This time, it was better diagnosed and it took 7 days in service for the fix. So far, this car has spent 60 days in service. A lemon. 
Hyundai Sonata in California, United States
Dec 2015 - Dec 2017
Feb 2016

2300 mi
Check engine light came on. Dealer reported loose gas cap from first gas-up even though I tightened until it clicked. Dealer removed and replaced the cap. 
Jun 2017

19000 mi
Check engine light came on a second time. Dealer replaced the fuel fill cap gasket and verified that the dimensions of the fill tube are correct. 
Hyundai Sonata in Florida, United States
Nov 2016 - Oct 2017
Aug 2017

16000 mi
Vehicle loses power under full throttle. Hyundai says this is normal operation and the vehicle should not be driven under full throttle. 
Hyundai Sonata in Washington, United States
Mar 2017 - Feb 2019
Feb 2018

5000 mi
Fuel door spring doesn't open the door. Spring tension was adjusted. 
Feb 2019

10000 mi
Crankshaft sensor replaced. 
Hyundai Sonata in California, United States
Apr 2016 - Jun 2018
Apr 2018

13600 mi
Car would not start. Was towed to dealer. Wiring harnesses replaced  and 1 bad battery that is part of the hev system. 
Hyundai Sonata in Washington, United States
Nov 2015 - Dec 2021
Feb 2018

25000 mi
Car shutoff with 'Check Hybrid System' and couldn't be started anymore. Dealer found hybrid module was broken and replaced it. Took week to get the part. 
Feb 2021

51000 mi
Engine shut off on highway with 'Check hybrid system'. Dealer could not find the issue. 

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2016 Hyundai Sonata 4dr Sedan

154-horsepower 2.0L I4 Hybrid 6-speed shiftable automatic FWD

Hyundai Sonata in Virginia, United States
Jul 2016 - Jun 2022
Sep 2016

11000 mi
There was a low volume, persistent sound reportedly coming from the headliner rubbing against a part of door frame. Headliner was dropped and foam was used to prevent the rubbing. Problem completely solved! 
May 2018

36000 mi
One of the anchors for the grab bar on the passenger side failed, is being replaced under a good-will warranty repair. 
Hyundai Sonata in North Carolina, United States
Jul 2015 - Jun 2022
Mar 2016

9000 mi
Ignition coil replaced. 
Mar 2017

22000 mi
Wind deflector on sunroof came loose. 
Feb 2018

35000 mi
Water pump for hybrid battery replaced 
Dec 2021

69950 mi

US $1400
Undiagnosed ignition coil problem caused check engine light to unpredictability go on and off. 
Hyundai Sonata in Florida, United States
Jan 2017 - Jul 2019
Apr 2018

25000 mi
Hybrid engine would not restart after being driven for at least an hour. “Check hybrid system” warning came on, After waiting 10 minutes engine restarted but “check engine ” indicator came on and remained on for remainder of the drive (300 miles). Next day all warning lights were not on. One week later on a long drive the same situation was repeated. Car taken to shops the next day. Code shown was P1877 and a power relay assembly was replaced. 
Hyundai Sonata in South Carolina, United States
Aug 2016 - Nov 2017
Sep 2016

1000 mi
Blind Spot Detection was not working. Need to replace power module, part ordered and appointment scheduled for replacement. 
Mar 2017

10000 mi

US $40
Right front bumper panel wasn't fitting flush with the fender panel - dealer sent me to their recommended body shop and the cost was minimal to fix. 
Hyundai Sonata in Florida, United States
Jun 2016 - Jan 2018
Aug 2017

14000 mi
The parking brake would not release, initially. When it did, there was a crunch and ALL the warning sensors lit up. They remained that way for several minutes, even after driving away. About 10 days prior, the "Key Present" sensor lit up, suggesting that there was NO key in the vicinity. The car could be driven, but I clearly ran the risk of an on-road shutdown because no key was identified or activated. 

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2015 Hyundai Sonata 4dr Sedan

turbocharged 245hp 2.0L I4 6-speed shiftable automatic FWD

Hyundai Sonata in Ontario, Canada
Nov 2015 - Jun 2022
Jul 2017

45880 mi
Noisy panoramic sunroof. Side rails replaced and it appeared to correct the issue. 
Hyundai Sonata in British Columbia, Canada
Jun 2016 - Aug 2020
May 2018

27280 mi
Sun roof wind deflector came off on highway, needed to be replaced. Dealership was painfully slow at getting replacement part. 
Hyundai Sonata in Ohio, United States
May 2017 - Oct 2017
May 2017

33000 mi
Replaced faulty vacuum pump in brakes. Caused electrical shortage 
Oct 2017

41000 mi
Light switch beginning to fail. Would cause light settings to move from Auto setting to full headlights when using turn signals intermittentanly. Light switch replaced 
Hyundai Sonata in Pennsylvania, United States
Dec 2015 - Jul 2018
Dec 2016

15000 mi
Some SiriusXM channels in the 300's would cut out. Took it to the dealer and they said that they found a low signal coming from the antenna. They replaced it, but I'm still having issues. 
May 2017

19000 mi
The moon roof has been rattling and shacking. Had it in 3 times for the same issue. They said there was a recall, but it's still doing the same thing. 
Aug 2017

24000 mi
Took the car in numerous times for a bad vibration in the panoramic moon roof. After the 4th time, they finally agreed to replace it. It was in the shop for about a week for the repair. There is still a slight vibration, but definitely not as bad as it was. I'm just wondering if after about 12 months, the bad vibration doesn't reoccur. 
Hyundai Sonata in Ontario, Canada
Mar 2015 - Oct 2015
Apr 2015 AC leak didnt work first time I tried to use it 
Jun 2015

3720 mi
AC quit working. It needed a part that had to be ordered and was out of stock. 
Hyundai Sonata in Indiana, United States
May 2015 - Nov 2019
May 2016

20700 mi
Steering wheel wobbled side to side. Dealer installed a new steering column. No more issue. 
Dec 2016

35000 mi
Car experiences extended turnover and sputters to life periodically in cooler weather. Took to dealer and they couldn't find anything and said no TSB's on issue. 
May 2018

63000 mi
Resistor for radiator fan failed, was replaced Seat switch control panel clip broke off. Part replaced. 
Hyundai Sonata in New York, United States
Nov 2014 - Jul 2017
Apr 2015

2200 mi
Faulty gas gauge reading 

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2015 Hyundai Sonata 4dr Sedan

turbocharged 178hp 1.6L I4 7-speed automated manual FWD

Hyundai Sonata in Texas, United States
Jun 2017 - Jun 2017
Jun 2017

34000 mi
Parking brake sensor was replaced 
Hyundai Sonata in Minnesota, United States
Apr 2017 - Dec 2021
Oct 2021

119000 mi
Turbo blew despite regular timely maintenance. Outside of warranty, quote was $6500. Decided not to complete the repair 
Hyundai Sonata in Minnesota, United States
May 2017 - Dec 2017
Dec 2017

34000 mi
Check engine light for Misfire number 3 engine cylinder, car did have rough idle, dealer could not replicate the problem, no Parts replace, 

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2015 Hyundai Sonata 4dr Sedan

185-horsepower 2.4L I4 6-speed shiftable automatic FWD

Hyundai Sonata in Maryland, United States
Nov 2014 - Jun 2022
Apr 2015

1300 mi
Car hesitated, sputtered and lost power. Dealer could not initially diagnose cause. Hyundai engineers became involved. Replaced engine wiring harness which resolved issue to date. 
Hyundai Sonata in Louisiana, United States
Oct 2015 - Jul 2016
Jan 2016 Panoramic sunroof rattled and creaked on bumpy roads. A dry silicone lubricant was applied to gaskets Panoramic sunroof seal was being pulled down into the roof when roof was closed. 
Mar 2016

5000 mi
Sunroof rattle has become even worse ECM Update, no problem Auto hold was creaking when released 
Hyundai Sonata in Quebec, Canada
Apr 2015 - Jul 2017
Jan 2016

26960 mi
The "cam Sensor" failed causing the engine to run poorly. 
Jul 2017

41540 mi
blind spot detection and rear motion sensing not working. problem with wiring harness. may have been accident related. dealer fixed under warrantee. 
Hyundai Sonata in Ontario, Canada
Nov 2015 - Jun 2017
Jun 2016

3720 mi
Due to the accident early this year, the body shop replaced the front suspension and stabilizer bar and strut, but there was constant noise coming from the front. The dealer ordered new parts and changed the above mentioned parts. 
Hyundai Sonata in Virginia, United States
Sep 2015 - Jun 2018
Aug 2016

7700 mi
Moon roof squeak. They applied lubricant, which worked for a while, but the squeak has since returned. 
Hyundai Sonata in Massachusetts, United States
Aug 2015 - Sep 2018
Jan 2016

5500 mi
seat motor binding. part backordered Tires out of balance since new. Have had 9 tires replaced, 2 of them still unbalanceable. Pending response from Hyundai on different brand of tire. Currently Hankook Kinergy. Requested different brand that will balance properly Shift shock when coming to a stop. Transmission computer reset and problem resolved. 
Mar 2016

8000 mi
Backordered part arrived. Seat base replaced 
Jun 2016

11000 mi
Chronic snapping noise from panoramic sunroof. Told that it cannot be fixed. Excessive valve clatter unless I use premium fuel. Unable to fix because there is "no error code" It's starting to look like Hyundai makes it very difficult for dealerships to get reimbursed for troubleshooting problems. 
Jan 2017

7800 mi
Shift shock again when stopping. Reset shift parameters and resolved problem. required Engine Computer update. No problem before, but car feels much faster. Panoramic sunroof noise again. New part available but dealer doesn't know about it, so no part replaced. Weather stripping lubed again which helps temporarily but will need to be done over and over again. 
Dec 2017

32000 mi
Occasional power loss while accelerating. Engine stumbles and looses power. Happened 4 times so far over the past 5 months. Unable to be diagnosed, as no check "engine light" Shift shock recurring when coming to a stop. Reset AT parameters. Resolved issue until it returns. No check engine light. Backup camera failed. Replaced camera. 
Jan 2018

33000 mi
Rattle from right front door with bass notes. Dealer replaced woofer. Rattle still there. Will followup at next visit. Heater blower motor making whining noise. Dealer ordered new blower motor. To be replaced at subsequent visit. 
Feb 2018

36000 mi
Speaker rattle still present from previous repair. Door panel replaced. Rattle still present. Will replace window switch next (which is where I told them the rattle was in the first place).  
Mar 2018

36000 mi
Replacing the window switches (3rd attempt) finally fixed the rattle. 
Hyundai Sonata in Virginia, United States
Jan 2016 - Jun 2018
Jun 2016

4000 mi
Minor creaking with glass sun roof. Dealer made a few adjustments and all's good. 
Hyundai Sonata in California, United States
Apr 2015 - Jul 2015
May 2015 high pressure fuel pump leaked due to failed bolt. They replaced bolt and seal 
Hyundai Sonata in Ontario, Canada
Dec 2014 - Dec 2015
May 2015

3720 mi
There was a constant noise from the moonroof. Dealer checked twice to confirm noise. They took the moonroof off and found the noise in the pannel. Hyundai has no parts. Car lying at dealer since three weeks. Hyundai refused to give rental :( 
Sep 2015

8680 mi
The noise continues from the sunroof and the dealership has not been able to repair it. They gave the car back after applying grease which stopped the noise temporarily but as soon as the grease dried up the squeaky noise started again. 
Oct 2015

8680 mi
The car is at the dealership since October 5, 2015. Now the cluster has failed along with the squeaky noise in the sunroof. The dealer says they do not have parts and waiting from Hyundai Canada. Update: cluster fixed while at dealer. 
Dec 2015

8680 mi
Never fixed the sunroof. Hyundai ultimately replaced the car. 
Hyundai Sonata in Texas, United States
Jun 2015 - Dec 2016
Dec 2016

15000 mi
mystery metal piece fell out of driver side mirror. Dealer replaced mirror since they didn't know how to repair or what the piece does. 
Hyundai Sonata in Ontario, Canada
Mar 2015 - Sep 2021
Oct 2015

11140 mi
top 6 rear defroster lines were not working 
Hyundai Sonata in Texas, United States
Mar 2016 - Jun 2018
Jan 2017 TSB issued to update the drivetrain software. Took about an hour at the dealership and afterwards the vehicle had much better throttle response at lower RPM. Also, shifts feel "crisper". 
Hyundai Sonata in California, United States
Apr 2017 - Jun 2019
Feb 2018

58000 mi
Car went limp, check engine on. Dealer said sensor had to be replaced. It was ok for awhile then problem happened again, but resolved itself with a restart 
Hyundai Sonata in Arizona, United States
Sep 2014 - Jul 2018
Jul 2018

46000 mi
Radiator hoses were leaking and needed to be replaced 
Hyundai Sonata in Ohio, United States
Oct 2014 - Nov 2017
Apr 2016

13000 mi
Message on nav screen indicating battery not charging 
Hyundai Sonata in New Jersey, United States
Apr 2015 - Nov 2023
Jan 2018

28000 mi
The camshaft timing sensor cover seal was breached due to sub zero temperatures and oil leaked on the sensor. This caused a low power condition and check engine light. There was a backorder for the part. 
Apr 2021

67000 mi

US $110
Paint was flaking off roof and hood. Hyundai good willed 90% for out of warranty repair. 
Jul 2023

89000 mi

US $100
Oiling issues 
Hyundai Sonata in Ontario, Canada
Oct 2014 - Jun 2022
Nov 2015

8680 mi
replaced right front Ball Joint 
Aug 2018

26040 mi
noise on bumpy roads 
Jun 2022

39060 mi

C $316
replaced leaking valve cover gasket 
Hyundai Sonata in South Carolina, United States
Oct 2020 - Feb 2022
Feb 2022

70000 mi

US $1300
Large areas of chipping paint on 4 panels of car. No cause for chipping, paint just started coming off. 
Hyundai Sonata in North Carolina, United States
Dec 2017 - Jun 2022
Jan 2022

37000 mi
Manufacturer recall - Smart junction box - turn signal error 
Hyundai Sonata in Virginia, United States
Sep 2014 - Nov 2017
Apr 2017

45000 mi
Drivers power seat motor failed. Replaced under warranty. 
Hyundai Sonata in Arizona, United States
Nov 2014 - Jun 2022
Aug 2015

5000 mi
Ventilated driver's seat was not circulating air properly. Dealer found misaligned air vents from factory and realigned them. Works fine now. 
May 2018

41900 mi
Original tires had worn down to 4.5mm, and needed replacement. Purchased and installed a set of OE tires. 
Hyundai Sonata in Texas, United States
Mar 2015 - Jul 2019
Feb 2017

42000 mi
Parking brake light was intermittent. Replaced defective part. 
Mar 2017

42000 mi
Vehicle would lag if acceleration attempted. Bad module replaced. 
Feb 2018

63000 mi
CV joint repair 
Hyundai Sonata in North Carolina, United States
Jun 2014 - Oct 2017
Apr 2017

78000 mi
CVVT seal not seated properly during assembly. Known issue. Causes slight rpm rev when idling and stutter at speed. 
Jun 2017

85000 mi
Replace pads 
Hyundai Sonata in Arizona, United States
Jan 2015 - Jun 2022
Feb 2022

67000 mi
Door wouldn't close due to door lock jamming. 

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2015 Hyundai Sonata 4dr Sedan

162-horsepower 2.0L I4 5-speed manual FWD

Hyundai Sonata in Ontario, Canada
Dec 2015 - Mar 2018
Sep 2016

32860 mi

C $200
Engine knock. Erratic idle. Fuel induction service & throttle body cleaning. 

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2015 Hyundai Sonata 4dr Sedan

159-horsepower 2.4L I4 Hybrid 6-speed shiftable automatic FWD

Hyundai Sonata in Ontario, Canada
Sep 2016 - Mar 2018
Jan 2017

55780 mi
Hybrid system warning message. 
Hyundai Sonata in California, United States
Jan 2016 - Mar 2019
Nov 2016

49900 mi
Hybrid battery cooling system tank leaking. Replaced under warrantee. 
Aug 2017

63000 mi
Turn signal assembly shorting 
Oct 2018

90000 mi
Hybrid battery failure 

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2018 Hyundai Sonata Repair Histories

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2018 Hyundai Sonata problems occur, check out our car reliability stats.