Verify with official recall databases, service records, a mechanic inspection, and local market data before relying on this summary.
At a glance
Fault summary
The Hyundai Elantra is commonly reported to experience a bottom-end bearing knock, often associated with the 2017–2020 model years. It can show up as a deep knocking that rises with rpm. Confirm the cause...
SeverityCriticalDrive?Drive only to a repair shopEvidenceSource notes available
Affected system
Engine
Severity
Critical
Structured severity term
Urgency
Urgency not yet verified
Can I drive?
Drive only to a repair shop
Best driven only to a repair shop; if symptoms get worse on the way, stop somewhere safe.
Repair/cost band
$$$$ · Very expensive
Potentially a very expensive repair; a pre-purchase inspection is strongly advised.
Vehicle applicability
Elantra
Evidence/confidence
Source notes available
See source & evidence notes below
Short answer
The Hyundai Elantra is commonly reported to experience a bottom-end bearing knock, often associated with the 2017–2020 model years. It can show up as a deep knocking that rises with rpm. Confirm the cause with a qualified mechanic before deciding on repairs.
SeverityCriticalDrive?Drive only to a repair shopRepairSpecialist
Key takeaways
Most often discussed around the 2017–2020 model years — verify the exact build.
Watch for early signs such as a deep knocking that rises with rpm.
Best driven only to a repair shop; if symptoms get worse on the way, stop somewhere safe.
Have a qualified mechanic confirm the cause before any major spending.
Can I still drive with this?
Drive only to a repair shop
Best driven only to a repair shop; if symptoms get worse on the way, stop somewhere safe.
SeverityCritical
Critical
What the records show for the Hyundai Elantra
Records held for the model years this page covers — open a year to see its issue areas, official records and codes:
Record counts are not adjusted for how many vehicles were sold. They show where records exist, not how likely this fault is.
The Hyundai Elantra is commonly reported to experience a bottom-end bearing knock, often associated with the 2017–2020 model years. It can show up as a deep knocking that rises with rpm. Confirm the cause with a qualified mechanic before deciding on repairs.
CarFaultIQ summaries are informational — always confirm with a qualified mechanic and check official recall sources for the exact vehicle.
Common symptoms
A deep knocking that rises with rpm
Oil light or reduced power in some cases
Likely causes
Connecting-rod bearing wear on certain Nu/Gamma builds
Engine-protection items addressed by campaigns in some markets
Diagnosis checks
Ask a mechanic to stop hard driving, check oil pressure, and verify recall/campaign status and confirm the root cause before replacing parts.
Used-car buyer warning
If you're considering a used Hyundai Elantra from around 2017–2020, ask for service records, check for a deep knocking that rises with rpm, and budget to inspect this area. Confirm there are no open recalls for the VIN.
Repair actions / cost band
$$$$ · Very expensive
Potentially a very expensive repair; a pre-purchase inspection is strongly advised.
Frequently asked questions
Which years are most often mentioned for this Elantra issue?
Owner discussion commonly references the 2017–2020 range, but individual vehicles vary — verify the specific VIN.
Is it safe to keep driving?
Best driven only to a repair shop; if symptoms get worse on the way, stop somewhere safe.
Is this expensive to fix?
It depends on the cause and severity. Potentially a very expensive repair; a pre-purchase inspection is strongly advised.