2018 Kia Optima reliability record
Every consumer complaint and recall the U.S. government (NHTSA) has on file for the 2018 Kia Optima — the repair risk behind the ownership cost.
- NHTSA complaints
- 325
- 238 in the last 5 years
- Top problem area
- ENGINE
- 127 complaints
- Recalls on record
- 2
- see below
- Reported harm
- 12 reported crashes · 11 injuries · 17 fires
What owners report fails — 2018 Kia Optima
- ENGINE 127
- UNKNOWN OR OTHER 37
- ELECTRICAL SYSTEM 31
- POWER TRAIN 18
- SERVICE BRAKES 16
2 recalls on record for the 2018 Kia Optima
- NHTSA 23V594000 · 2023 · LATCHES/LOCKS/LINKAGES:TRUNK LID:LATCH A person inside the trunk compartment may become trapped, increasing their risk of injury.
- NHTSA 18V161000 · 2018 · HYBRID PROPULSION SYSTEM If the VPD activates while the vehicle is being operated in Electric Vehicle (EV) mode, there may be a loss of power, in
Estimate the 5-year cost to own a 2018 Kia Optima
A vehicle's complaint record hints at the repair and maintenance budget you'll need. Add your state, purchase price, and mileage to the TCO calculator for the full picture.
Open TCO calculatorThese are unverified consumer reports and manufacturer recalls filed with the National Highway Traffic Safety Administration — not validated defect rates, and not adjusted for how many 2018 Kia Optima units were produced or sold. High-volume and older vehicles naturally accumulate more complaints. Use this as one research signal, not a verdict on any individual vehicle. Data as of 2026. Source: NHTSA Office of Defects Investigation (public domain).
Frequently asked questions
Is the 2018 Kia Optima reliable?
NHTSA has 325 consumer complaints on record for the 2018 Kia Optima and 2 recalls. The most-reported problem area is engine (127 reports). These are unverified consumer reports filed with the government, not validated failure rates, and are not adjusted for how many 2018 Kia Optima units were produced — popular vehicles naturally accumulate more reports.
What are the most common problems with the 2018 Kia Optima?
Owners most often report problems with: engine (127), unknown or other (37), electrical system (31), power train (18). Each figure is the number of complaints filed with NHTSA for this exact model year.
How much does it cost to own a 2018 Kia Optima?
Ownership cost depends on your state taxes, insurance, fuel, and the maintenance the vehicle's reliability record implies. Use the CarOutlay 5-year TCO calculator to estimate the full cost including the repair risk this complaint record suggests.