2012 Kia Sorento: Catastrophic engine failure
Common wear/failure (not a recall)
Symptoms
Owners of the 2012 Sorento report: catastrophic engine failure. CarComplaints.com lists 32 owner complaints, average mileage 84,400 miles.
NHTSA has 475 owner complaints for the 2012 Sorento in this area. Examples:
- NHTSA complaint ODI #11753475 (filed 07/29/2026): “I am filing this complaint regarding a sudden and unexpected engine failure in my 2012 kia sorento lx equipped with the 2.4l theta ii engine. vehicle information: year: 2012 make/model: kia sorento lx engine: 2.4l theta ii vin: [xxx] while driving, my vehicl…”
- NHTSA complaint ODI #11736289 (filed 05/07/2026): “The contact owned a 2012 kia sorento. the contact’s spouse stated that while driving at an undisclosed speed, the vehicle suddenly lost motive power with no warning lights illuminated. the contact's spouse noticed smoke coming from the front of the vehicle, p…”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: replace engine (20 reports). Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Pro
Internal engine work (lifters, oil consumption, fuel dilution diagnosis) requires engine teardown or dealer software/tests. (Our assessment.)
Cost
CarComplaints.com owners report a typical repair cost of about $6,560 (owner-reported average, not a quote).
Typical parts (search links, no affiliate codes)
AutoZone · O'Reilly · Advance · RockAuto
Sources
Page last updated .