2018 Kia OPTIMA PHEV
Problems, Recalls & Reliability Report
Quick Summary
The 2018 Kia OPTIMA PHEV has 12 owner complaints filed with NHTSA — that's 0.3x the segment average of 37. The most common issue is engine problems (33% of all complaints), specifically: 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. . There are 2 recalls issued for this model year.
12
Total Complaints
2
Recalls Issued
—/5
Safety Stars
0.3x
vs Segment Avg
Known Problems(top 5 of 6)
ENGINE
4 complaints- • 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.
- • 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 B
- • 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
“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. ”
— NHTSA complaint filing
When Problems Appear on the 2018 Kia OPTIMA PHEV
Based on 10 owner complaints that included an odometer reading. Median mileage at time of complaint: 19K miles. Most complaints cluster in the 0-30K miles range.
Mileage figures are self-reported by owners in NHTSA complaint filings. Peak bucket = the mileage range with the most complaints for that component; it reflects when owners noticed and reported problems, not necessarily when the fault first occurred.
Recalls (2)
Kia Motors America (Kia) is recalling certain 2017-2018 Optima Hybrid and Optima Plug-In Hybrid vehicles. The connecting rod bearings inside the engine may wear prematurely, which can result in engine damage.
Risk: A damaged engine can increase the risk of a fire or it can cause an engine stall, increasing the risk of a crash.
Fix: Dealers will inspect the engine. If bearing damage is found, the engine will be replaced. Dealers will also install a software update containing a Knock Sensor Detection System (KSDS). Repairs will be performed free of charge. Owner notification letters were mailed November 29, 2021. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC218.
Estimated Insurance Cost for 2018 Kia OPTIMA PHEV
How this estimate is calculated
Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.
Maintenance & Warranty
Recommended Kia OPTIMA PHEV Service Intervals
Turbo engines (Optima 2.0T, Sorento 2.5T) may benefit from more frequent oil changes.
"Severe service" conditions (heavy towing, extreme temps, city stop-and-go) typically halve these intervals. Always consult your vehicle's owner's manual for the authoritative schedule.
Kia New-Vehicle Warranty Coverage
10 year powertrain not transferable to subsequent owners
These are the terms for a new Kia. If you're buying a used 2018 OPTIMA PHEV, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Kia dealer for VIN-specific remaining warranty.
Estimated Repair Costs
Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.
🔍 Pre-Purchase Inspection Checklist
Based on 12 owner complaints for this specific year, here's what to check or ask about:
- ☐ENGINE: 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.
Typically appears around 50K miles. Repair cost ~$500
- ☐ELECTRICAL: 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 B
Typically appears around 50K miles. Repair cost ~$500
- ☐OTHER: I LEASED A NEW #KIA #OPTIMA #PHEV FROM YOU IN JULY OF 2018. IN JULY OF 2020, THE CHARGING CABLE LODGED IN THE CAR AND IT TOOK 4 HOURS FOR ROADSIDE ASSISTANCE TO REMOVE IT. ON DECEMBER 2, 2020, I GOT A CHECK ENGINE LIGHT AND MADE AN APPOINTMENT FOR SERVICE, BUT BEFORE I COULD BRING IT ON DEC 3, TH
Typically appears around 50K miles. Repair cost ~$500
- ☐VISIBILITY: THE CAR WAS PARK IN THE HOUSE AND WHEN I GET BACK I SAW A LONG CRACK ON THE WINDSHIELD SO I CHECK THE SURROUNDING IF THERE IS SOMETHING FELL ON IT BUT THERE'S NO EVEN AN IMPACT ON IT IT'S JUST CRACK FROM THE TOP OF THE WINDSHIELD UP TO THE MIDDLE CENTER. IT'S A BRAND NEW CAR SO HOW WILL THE WINDSHIE
Typically appears around 50K miles. Repair cost ~$500
- ☐RECALLS: Verify all 2 recalls have been completed — free at any Kia dealer
- ☐General: Get a pre-purchase inspection from an independent mechanic ($100-$200)
Kia OPTIMA PHEV — Year Comparison
How does 2018 compare to other years? Fewer complaints = more reliable.
Full years-to-avoid analysis →NHTSA Safety Rating
No NHTSA safety rating available
At a Glance
- Complaints
- 12
- Recalls
- 2
- Fire reports
- 0
- Crash reports
- 0
- Injury reports
- 0
- Segment avg
- 37
Check a Specific VIN
See recalls for YOUR 2018 Kia OPTIMA PHEV