2020 Kia Optima power train problems
26 owner complaints filed with NHTSA name the power train on the 2020 Kia Optima — 18% of all complaints for this model year.
What owners report
“While driving, my 2020 Kia Optima suddenly lost engine power and went into limp mode on the road, leaving me stranded and creating a severe safety hazard in traffic. The vehicle threw diagnostic trouble code P1326, which indicates a catastrophic rod bearing failure. The problem has been confirmed…”
filed Sep 8, 2026
“Engine replacement needed at 99,782 miles. P1326 code continuously popping up. Also has excessive oil consumption and electrical problems concerning the forward collision system. Kia refuses to replace engine although the P1326 code is covered by lifetime warranty. The cause of the incident was…”
filed Jun 13, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Power Train problems in other Optima years
| Year | Reports | Share |
|---|---|---|
| 2019 Optima | 17 | 8% |
| 2018 Optima | 18 | 8% |
| 2017 Optima | 21 | 8% |
| 2016 Optima | 73 | 10% |
| 2015 Optima | 49 | 5% |
| 2014 Optima | 20 | 3% |
| 2013 Optima | 64 | 5% |
| 2012 Optima | 54 | 6% |
| 2011 Optima | 25 | 4% |
| 2010 Optima | 24 | 32% |
| 2009 Optima | 33 | 28% |
| 2008 Optima | 18 | 13% |
Other reported problem areas on the 2020 Kia Optima
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.