NHTSA recall 21V844000
Engine · Kia America, Inc.
Details
What's wrong: The connecting rod bearings inside the engine may wear prematurely, which can result in engine damage.
Why it matters: A damaged engine can increase the risk of a fire or it can cause an engine stall, increasing the risk of a crash.
The fix: Dealers will inspect the engine. If bearing damage is found, the engine will be replaced. Dealers will also install a software update containing a knock sensor detection system (ksds). Repairs will be performed free of charge. Owner notification letters were mailed November 29, 2021.
Affected vehicles on MotorDeets
All model years NHTSA lists
2017 Kia Optima Hybrid, 2018 Kia Optima Hybrid, 2017 Kia Optima Phev, 2018 Kia Optima Phev.
Recalls can cover only some VINs. Check yours on NHTSA's official recall page for 21V844000.
Source: NHTSA recall records. Summary shortened; the official notice has the full text.