NHTSA Complaint #11185600 — 2011 HYUNDAI SONATA
ENGINE issue reported to NHTSA
Complaint Details
| ODI Number | 11185600 |
| Vehicle | 2011 HYUNDAI SONATA |
| Component | ENGINE |
| Date of Incident | |
| Date Filed | |
| Mileage | 131,000 miles |
| Crash | No |
| Fire | No |
| Injuries | 0 |
| Deaths | 0 |
| Vehicle Towed | No |
| State | OH |
Consumer Description
MY HYUNDAI SONATA BEGAN INCREASINGLY CONSUMING OIL RAPIDLY FOR A COUPLE MONTHS UNTIL IT GOT TO ME PUTTING IN 1 QUART EVERY 200 MILES!!! THAT DESTROYED THE CATALYTIC CONVERTER, ALTHOUGH THE TECH AT THE DEALER TRIED TO TELL ME IT WAS DUE TO FUEL. EXPERTS AT BOTH THE EXHAUST SHOP AND FORD DEALERSHIP (WHERE I BOUGHT IT USED), REFUTED THAT AND TOLD ME IT WAS DEFINITELY DUE PRIMARILY FROM THE ENGINE CONSUMING WAY TOO MUCH OIL. HYUNDAI REQUIRED ME TO DO 5 OIL CONSUMPTION TESTS AT THEIR DELAERSHIP BEFORE THEY CAN VERIFY AND DOCUMENT THE ENGINE IS HAVING PROBLEMS! BUT IN THE MEANTIME MY ENGINE COULD LIKELY BLOW UP/SEIZE UP, AS THE 2011 HYUNDAI SONATA IS NOTORIOUS FOR THAT AND THEY RECALLED 470,000+ ALREADY!! I ONLY HAVE 3 OIL CONSUMPTION TESTS, AND IT SHOWS 200 MILES PER QUART!! MY CAT CONVERTER IS NOW CLOGGED AND MY CAR LOST POWER. SO NOW IN A CATCH 22 (MAYBE ON PURPOSE?). I CAN'T GET 5 TESTS WITHOUT REPLACING MY CATALYTIC CONVERTER, BUT SINCE ENGINE IS LOSING 1 QUART PER 200 MILES THAT OIL WILL SOON DESTROY ANY NEW CONVERTER I PUT ON WITHIN 1 OR 2 MONTHS, IF NOT LESS!! SO THIS IS RUINING THE CAR, AND I HAVE STARTED A CASE NUMBER WITH CORPORATE HYUNDAI IN CALIFORNIA. THEY HAVEN'T CALLED ME BACK IN SEVERAL DAYS ALL THE WHILE I DON'T HAVE A CAR TO USE. ENGINE BURNING 1 QUART PER 200 MILES OR LESS IS TERRIBLE....ENGINE IS RUINED! AND IT'S NOT SAFE!! AS I HAVE READ SO MANY 2011 SONATA OWNERS TELLING ABOUT THEIR CAR ENGINES SEIZING UP, LOCKING UP WHILE DRIVING 65 MPH ON THE HIGHWAY IN THE MIDDLE LANE!! I HOPE HYUNDAI TAKES RESPONSIBILITY AS I STILL OWE $9,000 ON THIS CAR!
Related Complaints for the 2011 HYUNDAI SONATA
Other ENGINE Complaints
#11713510
My Hyundai Sonata has encounter two failing cylinders (compression loss) due to scoring. When driving in the highway ...
#11712626
The contact owns a 2011 Hyundai Sonata. The contact stated that while driving approximately 65 - 70 MPH, there was a ...
#11710623
The contact owns a 2011 Hyundai Sonata. The contact stated that while driving approximately 30 MPH, the vehicle unexp...
#11710036
I am reporting a safety-related engine failure involving my 2011 Hyundai Sonata 2.0T. In November 2025, at approxima...
#11701548
The contact owns a 2011 Hyundai Sonata. The contact stated that while driving at an undisclosed speed and making a le...
Recent Complaints for the 2011 HYUNDAI SONATA
#11719724
STEERING
The steering column gets loose because of a commonly defective bushing. The steering bangs and has free play making ...
#11718470
STRUCTURE:BODY
My car was broken into and they broke off my door handle and took out ignition parts, a police report was done
#11718470
UNKNOWN OR OTHER
My car was broken into and they broke off my door handle and took out ignition parts, a police report was done
#11712626
STEERING
The contact owns a 2011 Hyundai Sonata. The contact stated that while driving approximately 65 - 70 MPH, there was a ...
#11710420
AIR BAGS
UNKNOWN - I noticed DASHBOARD crack over time and the AIR BAG light remain on at all times. The AIR BAG light on the ...