2017 Hyundai Elantra: Engine complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 313 owner complaints for the 2017 Hyundai Elantra that list the engine component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11764901 (filed 09/17/2026): “I leased my 2017 hyundai elantra new in july 2016 and later purchased it. as of september 2026, it has approximately 77,000 miles. i am reporting two unresolved safety concerns despite repeated repairs and more than five months of seeking assistance from hyundai. multiple ignition coils have failed…”
- NHTSA complaint ODI #11763633 (filed 09/11/2026): “I bought my 2017 hyundai elantra se earlier this year with about 119,000 miles. it had good maintenance records when i bought it, and it now has about 128,000 miles. since buying it, i've had two oil changes done along with new spark plugs, coils, front brake pads, and tires. about two days before t…”
- NHTSA complaint ODI #11757404 (filed 08/17/2026): “The contact owns a 2017 hyundai elantra. the contact stated that while driving 50 mph, there was an abnormal knocking sound coming from the engine. the contact pulled over to the right side of the road, turned off and restarted the vehicle, and the vehicle operated as intended. no warning light was …”
Likely causes
These complaints do not establish a single root cause; read the examples above and get a diagnosis.
Fix, in plain English
No single fix is established by these reports. Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer about technical service bulletins (TSBs) or extended warranty coverage, then have the system diagnosed.
DIY difficulty: Pro
Internal engine work (lifters, oil consumption, fuel dilution diagnosis) requires engine teardown or dealer software/tests. (Our assessment.)
Cost
No sourced cost range for this issue. Get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
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Sources
Page last updated .