Worst 2018 Kia Optima Problems
Top 3 most-reported issues with average mileage at failure.
Engine Problems
Electrical Faults
Transmission / Drivetrain
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All Problems by Category
Every NHTSA complaint category for the 2018 Kia Optima.
| Component | Complaints | Crashes | Fires | Avg Mileage | Volume |
|---|---|---|---|---|---|
| Engine Problems | 126 | 1 | 9 | 63,843 mi | |
| Electrical Faults | 31 | — | 2 | 32,415 mi | |
| Transmission / Drivetrain | 18 | 1 | 1 | 35,367 mi | |
| Brakes | 16 | 2 | — | 34,393 mi | |
| Headlight/Taillight Failures | 13 | — | 1 | 32,662 mi | |
| Fuel System | 13 | — | — | 68,000 mi | |
| Steering Defects | 12 | — | — | 44,489 mi | |
| Unintended Acceleration | 10 | — | — | 49,161 mi | |
| Engine & Cooling | 9 | — | — | 72,000 mi | |
| Airbags | 8 | 6 | 1 | 48,627 mi | |
| Body Structure | 7 | 1 | — | 15,860 mi | |
| Seat Belt Issues | 4 | 1 | — | — | |
| Electronic Stability Control | 3 | — | — | — | |
| Lane Departure: Blind Spot Detection | 3 | — | — | — | |
| Electrical System:Ignition:Coil:Spark Plugs | 2 | — | — | — | |
| Engine And Engine Cooling:Engine:Oil/Lubrication | 2 | — | — | — | |
| Exterior Lighting:Headlights | 1 | — | — | — | |
| Firerelated | 1 | — | 1 | — | |
| Forward Collision Avoidance: Automatic Emergency Braking | 1 | — | — | — | |
| Forward Collision Avoidance: Warnings | 1 | — | — | — | |
| Suspension Failures | 1 | — | — | — | |
| Tire Defects | 1 | — | — | — | |
| Wipers & Visibility | 1 | — | — | — | |
| Wheel Issues | 1 | — | — | — |
Search Owner Complaints
Read what owners actually reported to NHTSA for the 2018 Kia Optima. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.
Recalls for 2018 Kia Optima
2 NHTSA recall campaigns affecting ~321,146 vehicles.
Kia America, Inc. (Kia) is recalling certain 2016-2017 Rio, 2016-2018 Optima, 2017-2018 Optima Hybrid and Optima Plug-in Hybrid vehicles. The trunk latch base may crack, preventing the opening of the trunk from the inside. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 401, "Internal Trunk Release."
Kia Motors America (Kia) is recalling certain 2017-2018 Kia Optima hybrid vehicles. These vehicles are equipped with a Voltage Protection Device (VPD), designed to protect the high voltage battery module, that may activate inadvertently.
Other Kia Optima Years
2018 Kia Optima — FAQ
Answers based on real NHTSA complaint and recall data for this specific model year.
Is the 2018 Kia Optima reliable?
What are common problems with the 2018 Kia Optima?
At what mileage do problems start on the 2018 Kia Optima?
How safe is the 2018 Kia Optima?
Does the 2018 Kia Optima have any recalls?
Should I buy a 2018 Kia Optima?
Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinItel.
Wider context: See the full Kia Optima reliability report with year-by-year comparison and generation analysis.
Check Your Specific 2018 Kia Optima
Real owner complaints tell you about the model. The VIN tells you about your specific car — accidents, title issues, odometer fraud.
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