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.


pretty bad
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
6,730 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2011 Hyundai Sonata electrical problems

electrical problem

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2011 Hyundai Sonata Owner Comments

problem #2

Aug 122011

Sonata 4-cyl

  • 7,350 miles


Driving on the freeways at roughly 45mph with air conditioning on without hard acceleration. Vehicle had roughly 7300mi. Vehicle lost power and decelerated, check charging system light turns on, several lights were flashing and the vehicle was beeping. I drove on to the shoulder and came to a stop. I took a short video of the dash before turning off the vehicle and turning it back on. It operates fine after this incident. This incident has occurred twice, the second time more error lights were shown but otherwise identical to above, traveling roughly 65mph on a highway with air conditioning off it occurred at roughly 7700 miles.

- Phoenixville, PA, USA

problem #1

Aug 042011

Sonata 4-cyl

  • 6,109 miles
I have a 2011 Hyundai Sonata hybrid, have had several problems with "check charging system" failue, been into dealership 3 times over a period of two months. Picked car up last Thursday, hopefully no more problems. The car would just die in traffic under speeds of 40mph, happen to me at least 6 times, you would have to come to a complete stop, put in park and click engine off (which is not running anyhow) and then restart and proceed. With traffic in dfw the way it is, this was a huge safety issue.

- Fort Worth, TX, USA

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