2011 Hyundai Elantra Engine Problems

Source: NHTSA · Updated Sep 28, 2026 · 92 complaints analyzed

Owners have filed 92 complaints with NHTSA about engine problems on the 2011 Hyundai Elantra, 21% of all complaints for this model year. Half of the reports with a mileage happened before 81,000 miles. The words owners use most often: “knocking noise” (10% of reports).

What owners describe

Phrases that appear unusually often in these complaints compared with complaints about other cars.

  • Knocking noise: mentioned in 9 of 92 complaints (10%)

At what mileage do engine problems happen?

Based on 66 complaints that reported the odometer reading.

Under 10k miles0 · 0%
10k–25k miles3 · 5%
25k–50k miles9 · 14%
50k–75k miles15 · 23%
75k–100k miles17 · 26%
100k–150k miles19 · 29%
150k+ miles3 · 5%

How serious are the reports?

Of 92 complaints, 2 mention a crash, 2 a fire.

Hyundai Elantra engine complaints by model year

Peak: 2017, with 290 complaints
1997: 119971999: 22000: 620002001: 42002: 220022003: 12004: 520042005: 42006: 220062007: 122008: 2420082009: 132010: 1520102011: 922012: 13920122013: 2332014: 16620142015: 922016: 11120162017: 2902902018: 14120182019: 1332020: 10820202021: 132022: 1120222023: 192024: 820242025: 3

n = 1,650 complaints · Source: NHTSA

Model yearEngine complaintsShare of that yearMedian miles
2025 Elantra314%4,000
2024 Elantra815%43,000
2023 Elantra1919%7,645
2022 Elantra1111%28,913
2021 Elantra1310%71,250
2020 Elantra10843%32,500
2019 Elantra13353%76,000
2018 Elantra14150%38,000
2017 Elantra29038%49,000
2016 Elantra11138%73,000
2015 Elantra9235%73,500
2014 Elantra16643%82,500
2013 Elantra23318%65,000
2012 Elantra13921%68,585
2011 Elantra9221%81,000
2010 Elantra154%91,250
2009 Elantra135%86,500
2008 Elantra248%112,283
2007 Elantra124%140,000
2006 Elantra21%80,540
2005 Elantra43%104,250
2004 Elantra53%99,597
2003 Elantra10%3,500
2002 Elantra21%80,300
2001 Elantra41%126,100
2000 Elantra63%30,750
1999 Elantra22%150,000
1997 Elantra11%189,000

When owners reported it

Peak: 2019, with 19 complaints
2012: 2201222013: 222014: 4201442015: 992016: 4201642017: 772018: 152018152019: 19192020: 112020112021: 332022: 5202252023: 442024: 5202452025: 112026: 120261

n = 92 complaints · Source: NHTSA

Related recalls (0)

No safety recall lists engine for the 2011 Hyundai Elantra. A pattern of complaints does not always lead to a recall.

What owners report

Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.

I have a Piston/Engine Defect according to the mechanic at the car shop. Any time any acceleration is applied you can hear the knocking. I believe it should be covered through the class action alleged that 2011-2016 Elantras engines (including the Limited trim) have a piston defect leading to…

Received Feb 10, 2026 · NHTSA complaint 11717069

Car stop working once I got home I notice while I was driving the car kept back firing and Jurking while driving .had a mechanic look at the car he tried to start it but it started and shut off..he even tried to jump start the car with the jumping cables but it will not start..he told me it was…

Received Apr 16, 2025 · NHTSA complaint 11655110

My engine completely stop working.

Received Oct 21, 2024 · NHTSA complaint 11620920

Frequently asked questions

Do all 2011 Hyundai Elantras have engine problems?

No. NHTSA has 92 owner complaints about engine for the 2011 Hyundai Elantra (21% of the 433 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.

Was there a recall on the 2011 Hyundai Elantra engine?

No recall currently lists engine for this vehicle.

At what mileage do engine problems start?

The median reported mileage is 81,000 miles: half of the reports with a mileage came before that.

What do owners say about engine problems on the 2011 Hyundai Elantra?

The most frequent phrase is “knocking noise”, in 9 of 92 complaints.

Other 2011 Hyundai Elantra problems

See all 2011 Hyundai Elantra problems or engine problems across all Elantra years.