2018 Kia Optima

◆ Worse than typical
2018 Kia Optima
BUILT 2026-09-02

This year had 30% to 100% more complaints than this model's typical year.

This verdict reflects complaint volume compared to this model's typical year. Recalls and safety issues below apply regardless of the verdict — always check them.

How is this computed?

COMPLAINTS PER YEAR

Complaints per year, Kia Optima Bar chart of distinct NHTSA complaints filed per model year, 2018 highlighted. 2001: 143 complaints 2001 2002: 107 complaints 2003: 141 complaints 2004: 225 complaints 2004 2005: 144 complaints 2006: 155 complaints 2007: 166 complaints 2007 2008: 143 complaints 2009: 116 complaints 2010: 75 complaints 2010 2011: 592 complaints 2012: 919 complaints 2013: 1379 complaints 2013 2014: 583 complaints 2015: 1006 complaints 2016: 754 complaints 2016 2017: 255 complaints 2018: 231 complaints 2018 2019: 205 complaints 2019 2020: 142 complaints 2020
2018: 231 complaints
View as data table
YearComplaints
2001143
2002107
2003141
2004225
2005144
2006155
2007166
2008143
2009116
201075
2011592
2012919
20131379
2014583
20151006
2016754
2017255
2018231
2019205
2020142

KNOWN PROBLEM AREAS

Percentages can add to more than 100% -- a complaint can name more than one system.

ENGINE 56%

56% of complaints: engine — 130 distinct reports on file.

CRASH FIRE
Show complaint excerpts

Was driving on the interstate. The only light on was the ABS light and the car started smoking.

NHTSA ODI report, 20231020

Also filed under UNKNOWN OR OTHER

The contact owns a 2018 Kia Optima. The contact stated that while driving at an undisclosed speed, the vehicle failed to accelerate and failed to exceed 52 MPH. The vehicle shut off.

NHTSA ODI report, 20260820

I’ve had my 2018 kia optima for round about two years.I only got this car because they refused to replace my previous engine on my 2015 Kia optima,even though I had a warranty but that’s another story(Kia on the Blvd).This car have given me...

NHTSA ODI report, 20260709

ELECTRICAL SYSTEM 14%

14% of complaints: electrical system — 33 distinct reports on file, most commonly citing spark plugs.

FIRE
POWER TRAIN 8%

8% of complaints: power train — 18 distinct reports on file.

CRASH FIRE INJURY
Show complaint excerpts

SATURDAY, JANUARY 20, 18:55(APPROXIMATELY) AMHERST MASSACHUSETTS, 39 DEGREES FAHRENHEIT PARKED CAR, PULLED KEYS AND EXITED CAR TO HELP MY MOTHER EXIT.

NHTSA ODI report, 20180120

SERVICE BRAKES 7%

7% of complaints: service brakes — 17 distinct reports on file.

CRASH INJURY
Show complaint excerpts

I slowly pulled into the parking lot at work coming around a corner with my break song slowly to see if anything was coming from the other side, pull it around to THE back looking straight ahead to pull into my parking spot as I pulled into my...

NHTSA ODI report, 20231018

EXTERIOR LIGHTING 6%

6% of complaints: exterior lighting — 14 distinct reports on file, most commonly citing headlights.

FIRE

SAFETY TIMELINE

2018 — complaint volume: 231
R 20180503 — hybrid propulsion system

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.

Remedy: Kia will notify owners, and dealers will remove the VPD switch and install two newly designed Battery Management Systems (BMS) that contain Overvoltage Protection Devices (OPDs), free of charge. The recall is expected to begin May 2018.

Campaign 18V161000 — check if this car was fixed

I 20190419 — EA (closed 20240919)

Electrical overstress

I 20220912 — DP (closed 20231212)

Loss of Motive Power

R 20231019 — latches/locks/linkages

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.

Remedy: Dealers will replace the trunk latch base subassembly, free of charge. Owner notification letters were mailed October 19, 2023. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC278.

Campaign 23V594000 — check if this car was fixed

BUY-SMART CHECKLIST

2018 Kia Optima — pre-purchase inspection

  • Test/inspect for engine issues (130 reports on file for this year).
  • Test/inspect for electrical system issues (33 reports on file for this year).
  • Test/inspect for power train issues (18 reports on file for this year).
  • Verify recall 18V161000 (hybrid propulsion system) has been completed.
  • Verify recall 23V594000 (latches/locks/linkages) has been completed.

OTHER YEARS OF THIS MODEL

BEST YEARS

▲ 2010 ▲ 2002 ▲ 2009

WORST YEARS

■ 2013 ■ 2015 ■ 2012

See all years ranked →

FAQ

Is the 2018 Kia Optima reliable?

Based on NHTSA complaint volume compared to this model's typical year, the 2018 Kia Optima is rated "worse than typical".

What are the most common problems with the 2018 Kia Optima?

The most-reported component is engine, accounting for 56% of complaints on file.

How many recalls does the 2018 Kia Optima have?

2 recalls on file for this model year.

Data updated 2026-09-01 · Complaints are unverified owner reports filed with NHTSA, not independently verified defects. Methodology.