The Lane Check

Home › Cars › Kia › Optima › 2020

2020 Kia Optima problems: engine and transmission complaints and recalls

VERY HIGH COMPLAINT SIGNAL
84%
116 of 138 relevant owner complaints are about the engine, transmission or fuel system

84% of relevant owner complaints filed with NHTSA on the 2020 Kia Optima are about the engine, transmission or fuel system. Well over half of everything owners reported is the drivetrain. That is a severe model-level pattern; every model year we track at this level has a documented failure behind it.

Worse than 99% of the 1,790 model years we track (2010–2023).

Excludes 10 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 78%).

NHTSA data checked October 3, 2026

The VIN is on the listing, the driver’s door jamb, and the bottom of the windshield on the driver’s side.

Does the 2020 Kia Optima have engine problems?

Owner complaints say yes, heavily, as a model-year pattern. 116 of 138 relevant complaints filed with NHTSA about the 2020 Kia Optima concern the engine, transmission or fuel system (84%), and the largest group is filed under engine (100). For comparison, the 2019 scores 54%. On a test drive, check for stalling, loss of power, rough idle, oil consumption or a check-engine light. This describes the model year, not any one car: a well-maintained or already-repaired example can be fine, and a clean model year can still have a bad car in it.

Drivetrain complaints
116
engine, transmission, fuel
Total complaints
148
this model year
Fires reported
3
owner-reported
Recall campaigns
0
6 crashes · 4 injuries

Complaints by component

ENGINE100 · 68%
POWER TRAIN27 · 18%
UNKNOWN OR OTHER16 · 11%
ELECTRICAL SYSTEM13 · 9%
FUEL/PROPULSION SYSTEM11 · 7%
ENGINE AND ENGINE COOLING8 · 5%

The years either side

Manufacturers fix things mid-generation. A bad year next to a clean one is common; the fix usually arrived in between.

How the 2020 compares with other Kia Optima years

Of the 11 Kia Optima years with enough complaints to score, the 2020 is the worst on engine and transmission share (84%). The best is the 2019 (54%). By volume, the 2020 drew 148 complaints (116 drivetrain), against 210 for the 2019.

Kia Optima years to avoid and best years →

In the full report

The rest of the picture on the 2020 Kia Optima

  • The mileage where it happens. When owners of the 2020 Kia Optima said the problem showed up, and the range most of them fell in.
  • What the repair costs. Typical engine repair ranges, to price into your offer.
  • Cleaner alternatives. Similar cars and nearby years with a better record.
  • Up to 15 owner reports, with the ones about your car's own engine first.
  • What to ask the seller and what to check on the test drive, for this car.
  • Two cars side by side, if you are deciding between them.

What one owner reported

ENGINE10/01/2026
purchased this vehicle on June 18, 2024, as a second owner with 125,019 miles on the odometer. Within months of purchase, the engine began exhibiting symptoms consistent with connecting rod bearing failure: engine knock, excessive oil burning (requiring oil top-ups every 2-3 weeks), and rough running. The check engine …

One of 116 drivetrain complaints. The full report shows up to 15, with quotes about the engine in the car you are looking at first.

Checking one particular 2020 Kia Optima? This page is about the model year. Accidents, title brands and odometer records belong to the individual car, and that is what a vehicle history report covers.

Get a history report from EpicVIN Before you pay: EpicVIN’s $1 offer is a 3-day trial (up to 5 reports) that renews at $49.99 a month unless you cancel. Other plans are listed under “View all our packages” at checkout. We may earn a commission if you buy through this link. It does not change what this page reports.

Questions people ask about the 2020 Kia Optima

Does the 2020 Kia Optima have engine problems?

Owner complaints say yes, heavily, as a model-year pattern. 116 of 138 relevant complaints filed with NHTSA about the 2020 Kia Optima concern the engine, transmission or fuel system (84%). Before buying one, have an independent mechanic check the engine and ask the seller whether it has been repaired or replaced.

What is the most common problem with the 2020 Kia Optima?

Going by NHTSA owner complaints, the most common problem filed against the 2020 Kia Optima is engine: 100 of 148 complaints (68%) name it, followed by power train (27) and electrical system (13). A complaint can name more than one component, so these overlap.

Is the 2020 Kia Optima reliable?

On the engine and transmission, owner complaints point to a weak spot: 84% of relevant complaints filed with NHTSA concern the drivetrain (very high signal). That is worse than 99% of the 1,790 model years we track. Among the 11 Kia Optima years we score, it ranks worst. Complaint data describes the model year, not one car, and it says nothing about trim, paint or electronics outside the drivetrain; an independent inspection still decides it.

Are there engine or transmission recalls on the 2020 Kia Optima?

NHTSA lists no recall campaigns on the 2020 Kia Optima.

Which Kia Optima years are better?

Among the Kia Optima years we track, the 2019 (54%), the 2012 (55%) and the 2013 (56%) have a lower engine and transmission complaint share than the 2020 (84%). Manufacturers fix things mid-generation, so the year before or after can be a different car. Every year side by side: https://thelanecheck.com/cars/kia-optima

Have the VIN?Paste it and get the full report for that car. First report free, then a 30-day pass covers a whole car search.

Check a VIN

Experimental model-level information. This is not a vehicle inspection, vehicle-history report, financial advice or purchase recommendation. It describes patterns across a model year, not the condition of any individual vehicle.