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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 17, 2026
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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

2010
63%
36 of 75
2011
59%
287 of 593
2012
55%
471 of 919
2013
56%
722 of 1,383
2014
59%
327 of 586
2015
69%
668 of 1,009
2016
70%
490 of 756
2017
78%
182 of 256
2018
76%
159 of 232
2019
54%
105 of 210
2020
84%
116 of 148
2021
no data
2022
no data
2023
no data

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

In the full report

The rest of the picture on the 2020 Kia Optima

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 them, 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.

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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.

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.

Should I buy a 2020 Kia Optima?

That depends on the car in front of you, not just the model year. The 2020 Kia Optima has an elevated engine complaint pattern, so treat it as a car that needs proof: service records showing engine work, a cold-start test drive, and an independent pre-purchase inspection focused on the engine. A well-kept or already-repaired example can be a fine car; an unknown one is a gamble.

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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.