2014 Hyundai Elantra: Engine knocking
Common wear/failure (not a recall)
Symptoms
Owners of the 2014 Elantra report: engine knocking. CarComplaints.com lists 8 owner complaints, average mileage 69,900 miles.
NHTSA has 176 owner complaints for the 2014 Elantra in this area. Examples:
- NHTSA complaint ODI #11769829 (filed 10/08/2026): “I was sold this car in july of 2025, and i was sold an extended warranty. i didn’t know about the recall, the recall caused engine failure so the warranty company refuses to pay for the new engine and hyundai refuses to pay for the new engine even though the r…”
- NHTSA complaint ODI #11769808 (filed 10/08/2026): “The contact owned a 2014 hyundai elantra. the contact stated that while the vehicle was parked and turned off with the contact seated inside the vehicle, there was an abnormal burning odor coming from the vehicle. the contact had previously been smoking a ciga…”
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 (5 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 $5,000 (owner-reported average, not a quote).
Typical parts (search links, no affiliate codes)
AutoZone · O'Reilly · Advance · RockAuto
Sources
Page last updated .