Notes: The 2011 Sonata has a seriously defective engine that seizes without warning. It was awarded the dubious honor of being the first CarTalk / CarComplaints Turd of the Week in late September 2015.

A class action lawsuit was filed in May 2015 against Hyundai that claims the 2.4L Sonata engine is defective. More info here.


really awful
Typical Repair Cost:
Average Mileage:
102,850 miles
Total Complaints:
3 complaints

Most Common Solutions:

  1. not sure (1 reports)
  2. replace cooling assembly (1 reports)
  3. replace resistor (1 reports)
2011 Hyundai Sonata cooling system problems

cooling system problem

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2011 Hyundai Sonata Owner Comments

problem #3

May 142018

Sonata GLS 2.4L V6

  • Manual transmission
  • 89,477 miles


Out of the blue my car overheated while in neutral and I was chatting outside the car. 15 mins goes by and my rad fan wasn't working. I turned the A/C trying to force the fan on and it didn't work. A new resistor fixed the problem for a week before my A/C went out and my car overheated again which I will submit a new complaint for as it was a different fix.

- Charla H., London, ON, canada

problem #2

May 252018

Sonata GLS 2.4L V6

  • Manual transmission
  • 144,000 miles

So after my car overheated the first time, the resistor being replaced seem to fix it. That lasted a week until my A/C stopped working. I only drove it twice as my daughter was far too hot in stop and go traffic at 7 months old to be with no A/C. Only the 2nd drive, my car overheats AGAIN! So now it's not driveable. My third party warranty company somehow gets it covered, but the parts would have been $660CAD before labour to have the entire electrical system on my cooling assy replaced.

This car is nothing but problems!!

- Charla H., London, ON, canada

problem #1

Jul 032016

Sonata Limited Turbo 2.5L

  • Automatic transmission
  • 75,000 miles

it's happened twice and they don't know why since the air doesnt work if you have to run the fan even wo the air condition on it overheats

- Amy M., Carrollton, VA, US

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