2018 Kia Optima Phev Engine Problems
- Complaints
- 3about this part
- Share
- 38%of 8 total for the year
- Median mileage
- 19,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the engine of the 2018 Kia Optima Phev, 38% of the 8 complaints for this model year. Where a mileage was given, the median is 19,000 miles. 1 recall campaign on record is filed under a similar system.
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.
“I was told by the dealership that my 2018 Kia Optima Phev was repaired but after I drove it off the lot and got on the freeway the warning light came on again and lost all power. I almost got into another accident because of this. The dealership said they worked with Kia technical support to fix my car but apparently Kia doesn't know what's wrong with their own car. The vehicle has only 19k miles. I'm afraid for my safety and my families that this will continue to happen.”
NHTSA complaint #11398068, filed 2021-02, 19,000 miles“Error message check hybrid system. Turn off engine with yellow caution triagle showing exclaimation point and hev came on, at highway speed vehicle dropped to from 65 MPH to 40 MPH suddenly, exited freeway, turned car off and restarted...vehicle had loss of propulsion, would not go over 20 MPH. Stop, at stop sign, and when I applied gas, the vehicle would not go over 10 MPH...once safely off the road, I turned engine off, towed to dealer. Dealer could not duplicate. 1 day after picking up the vehicle from dealer, same problem occurred. …”
NHTSA complaint #11219554, filed 2019-06, 11,000 miles“When I was driving on the highway on 2/14/2011 a check hybrid system warning came on, check engine light, triangle hev light, a red battery light came on and car lost engine power. After my vehicle slowed traffic down due to not having power I was barely able to pull over to the side of the road by coasting the car to the shoulder. It would not accelerate what so ever not even with just the engine power. When I pulled over the big check hybrid system warning dissapeared and only the check engine light and triangle hev light stayed on. I had my children in the car and almost caused an accident. …”
NHTSA complaint #11396321, filed 2021-02, 19,000 milesRelated recalls
- 21V844000Oct 29, 2021Kia Motors America (Kia) is recalling certain 2017-2018 Optima Hybrid and Optima Plug-In Hybrid vehicles. The connecting rod bearings inside the engine may…Covers: Kia Optima Phev 2017–2018, Optima Hybrid 2017–2018
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2018 | 3 | 38% |
| 2017 | 11 | 48% |
Other parts of the 2018 Kia Optima Phev
3 complaintsOther or unknown
2 complaintsEngine cooling
1 complaintsSteering
1 complaintsTransmission and drivetrain
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2018 Kia Optima Phev
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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