2018 Hyundai Elantra: Rod bearings
Common wear/failure (not a recall)
Symptoms
Owners of the 2018 Elantra report: rod bearings. CarComplaints.com lists 2 owner complaints, average mileage 119,650 miles.
NHTSA has 176 owner complaints for the 2018 Elantra in this area. Examples:
- NHTSA complaint ODI #11771561 (filed 10/16/2026): “Engine mounts have been replaced already twice and they keep going bad last time was over a year ago and now it's bad again making noises vibrate and this replacement was done by the dealership with parts from hyundai apparently under warranty and now warranty…”
- NHTSA complaint ODI #11768382 (filed 10/01/2026): “While driving the engine light came off and car shut down instantly. i see there is issues with the 2018 hyundai elantra but i’m coming ot if picket. $7678.50 i purchased the vehicle i. zmay and purchased a standard warranty that covers $2500 per repair. i hav…”
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 (2 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 $10,400 (owner-reported average, not a quote).
Typical parts (search links, no affiliate codes)
AutoZone · O'Reilly · Advance · RockAuto
Sources
Page last updated .