2018 Hyundai Sonata Hybrid Engine Problems
- Complaints
- 5about this part
- Share
- 56%of 9 total for the year
- Median mileage
- 47,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the engine of the 2018 Hyundai Sonata Hybrid, 56% of the 9 complaints for this model year. Where a mileage was given, the median is 47,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“2018 Sonata Hybrid May 19 - Check Hybrid System Turn Engine Off appeared on the dashboard. Vehicle brought to dealership. May 22 - I pay for a rental vehicle May 26 - Dealer states vehicle is ready and they performed service campaign 966. May 27 - My rental car is returned. Dealer picks me up and I go to dealership. I get into my car and Check Hybrid System Turn Engine Off appeared on the dashboard. Vehicle never driven off dealership lot. Dealership pays for my rental this time. …”
NHTSA complaint #11468982, filed 2022-06“I was driving on the freeway and my car lost all power. My indicator dash board flashed lights and a loud beeping sound. The warning lights flashed to check my hybrid system and turn engine off, HEV. My car immediately lost power and turned off. I was on the freeway, I almost got into an accident, cars were honking at me. My vehicle was towed by my insurance company. I receieved a phone call from the service advisor today, he informed me that I need an electical water pump and the cost quoted to me is $1908.00. When I complained to the advisor he told me that water pumps only last 3-5 years. …”
NHTSA complaint #11564994, filed 2024-01“Same problem with this 2018 Hyundai Sonata Limited Hybrid engine as the already recalled 2017 Sonata’s with the same 4 liter/direct fuel injection engines. At approximately 69,000 miles the problems and check engine light analyzed was done by Auto Zone and Brandon Hyundai (3 times each and finding additional problems each time). I have documentation. …”
NHTSA complaint #11462848, filed 2022-04“The contact owns a 2018 Hyundai Sonata Hybrid. The contact stated that while driving at an undisclosed speed, there were abnormal sounds coming from the vehicle. The malfunction lamp indicator warning light was illuminated. The vehicle was taken to the dealer and diagnosed with engine failure. The contact was informed that the engine needed to be replaced and that there was a Service Campaign Number: 966 (Engine Monitoring Logic) associated with the VIN that was unrepaired. The vehicle was not repaired and remained at the dealer. …”
NHTSA complaint #11452868, filed 2022-02, 75,000 milesRelated service bulletins
- 11038458Oct 8, 2026Some vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin outlines the combustion chamber cleaning procedure…
- 11038456Oct 7, 2026Certain vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin provides the inspection and repair procedures…
- 11006829Aug 19, 2024Hyundai is conducting a campaign to enhance the knock sensor software to detect abnormal engine bearing noise before potentially severe engine damage occurs. If abnormal engine…
- 10165455Aug 12, 2019If you are servicing an applicable vehicle with a ?Check Engine? light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid…
- 10160102Apr 19, 2019This bulletin provides additional service diagnostic information and repair procedures related to electric A/C compressors equipped in hybrid electric vehicles, plug-in hybrid…
- 10160095Apr 9, 2019If you are servicing a Sonata Hybrid with the symptoms and DTC listed below, follow the Service Procedure on Page 2.
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 1 | 11% |
| 2023 | 7 | 47% |
| 2022 | 2 | 11% |
| 2021 | 21 | 38% |
| 2020 | 8 | 50% |
| 2019 | 3 | 60% |
| 2018 | 5 | 56% |
| 2017 | 46 | 57% |
| 2016 | 73 | 55% |
| 2015 | 19 | 35% |
| 2014 | 12 | 43% |
| 2013 | 40 | 37% |
| 2012 | 68 | 44% |
| 2011 | 40 | 42% |
Other parts of the 2018 Hyundai Sonata Hybrid
2 complaintsExterior lighting
2 complaintsForward collision avoidance
2 complaintsAir bags
1 complaintsFuel system
1 complaintsOther or unknown
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2018 Hyundai Sonata Hybrid
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology