Problems · NHTSA complaints

2011 Hyundai Equus problems

Owners filed 24 complaints about the 2011 Hyundai Equus with NHTSA between Jul 2012 and Oct 2025. The most-cited component is suspension (11).

Complaints
24
Filed with NHTSA
Crashes
2
Reported by owners
Fires
1
Reported by owners
Injuries
2
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Suspension11
  2. Service brakes6
  3. Electrical system4
  4. Wheels3
  5. Exterior lighting2
  6. Engine1
  7. Engine and engine cooling1
  8. Air bags1
  9. Steering1
  10. Electronic stability control (esc)1
  11. Visibility/wiper1
  12. Other / unknown1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Nov 7, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20122
20134
20141
20150
20165
20171
20181
20193
20201
20211
20222
20230
20240
20253

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Suspension

11 reports2 crashes
“The contact owns a 2011 Hyundai Equus. The contact stated that the front shocks were previously replaced under an unknown recall. The contact stated that while driving at various speeds, the vehicle experienced rear suspension failure. The vehicle was taken to the dealer, where the rear springs were replaced; however, the failure recurred. The vehicle was taken to another dealer, where the rear springs were replaced a second time; however, the failure persisted. The contact stated that while driving on an uneven road surface, the vehicle was bouncing, and felt like the wheels were rubbing the front and rear wheel wells. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 30,000.”
Owner complaint to NHTSAFiled May 2, 2025SuspensionODI 11658557

Service brakes

6 reports
“THE BRAKE PEDAL GOES ALMOST TO THE FLOOR WHEN THE BRAKES ARE APPLIED. I DO NOT HAVE MUCH BRAKING AND I HAVE CHANGED THE BRAKE PADS (FRONT/REAR) AND BLED THE BRAKES AND IT DID NOT HELP. I HAVE READ THAT THE PROBLEM IS WITH THE HYDRAULIC ELECTRONIC CONTROL UNIT (HECU) AND THE PART IS COVERED UNDER RECALL FOR THE 2011 HYUNDAI GENESIS (RECALL 13V489000). SINCE IT IS THE SAME PART THAT IS USED ON THE 2011 GENESIS, DOES THE RECALL COVER THE EQUUS WHICH IS THE SAME CAR.”
Owner complaint to NHTSAFiled Mar 10, 2020Service brakesODI 11317194

Electrical system

4 reports1 fire
“MALFUNCTION OF SUSPENSION AND NO DEALERSHIP CAN RESET. WE BEEN TO MERIDIAN AND HATTIESBURG DEALERSHIP AND EITHER THE EQUIPMENT WAS NOT WORKING OR HAVE THE PROPER TOOLS TO CORRECT THE ISSUE. ALWAYS TRIED TO SELL US ANOTHER VEHICLE. YOU”
Owner complaint to NHTSAFiled Nov 9, 2019Suspension, Electrical system, Unknown or otherODI 11279163

Wheels

3 reports2 crashes
“AFTER SEVERAL FAILED ATTEMPTS TO FIND A SERVICE CENTER OR AUTHORIZED DEALER TO ADJUST MY ALIGNMENT, I FELT IT WAS NECESSARY TO FILE A COMPLAINT REGARDING MY CONCERNS ABOUT MY VEHICLE'S FRONT TIRE ALIGNMENT. MY MOST RECENT EXPERIENCE OCCURRED ON DECEMBER 14, 2016 AFTER GETTING A NEW SET OF TIRES FOR MY CAR. INCLUDED IN THE TIRE FITTING SERVICE WAS A WHEEL ALIGNMENT CHECK AND ADJUSTMENT. HOWEVER, THIS IS NOT THE FIRST TIME I HAVE ENCOUNTERED ISSUES WITH A SERVICE CENTER SAYING THEY ARE UNABLE TO ADJUST MY FRONT CAMBER AND CASTOR ADJUSTMENTS BECAUSE THE "MANUFACTURER DOES NOT SPECIFY" WHAT THESE ALIGNMENTS SHOULD BE. PERHAPS THE STRANGEST PART ABOUT THIS IS THE FACT THAT THERE ARE SPECIFICATIONS FOR THE REAR WHEELS. I HAVE EVEN CONTACTED SEVERAL HYUNDAI AUTHORIZED DEALERSHIPS HERE IN INDIANAPOLIS AND THEY TOO INDICATE THEY ARE UNABLE TO MAKE THE PROPER ADJUSTMENTS. MY LAST RESORT WAS TO CONTACT HYUNDAI USA TECHNICAL SERVICE TO SEE IF THEY COULD OFFER ADVICE AND THEY'RE ONLY FEEDBACK WAS THAT I NEEDED TO VISIT A LOCAL AUTHORIZED DEALER FOR SUPPORT ..... FORTUNATELY, I HAVE NOT BEEN IN A LIFE-THREATENING SAFETY SITUATION DUE TO THIS DEFECT BUT WITHOUT THE ABILITY TO…”
Owner complaint to NHTSAFiled Dec 14, 2016Suspension, WheelsODI 10935225

Exterior lighting

2 reports1 related recall
“WHEN APPLYING CAR BRAKE PEDAL, THE BRAKES LIGHTS WILL NOT ILLUMINATE. IF I TURN ON CAR HEAD LIGHTS THE BRAKE LIGHTS ILLUMINATE. BUT IF THE HEAD LIGHTS ARE OFF THEY DON'T WORK.”
Owner complaint to NHTSAFiled Aug 8, 2016Exterior lighting, Service brakesODI 10894091

Engine

1 report
“The contact owns a 2011 Hyundai Equus. The contact stated there was an abnormal knocking sound coming from the engine. There was no warning light illuminated. The vehicle was taken to a local independent mechanic, where the vehicle was diagnosed, and the contact was advised that the rod bearings had failed, and the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 120,000.”
Owner complaint to NHTSAFiled Apr 15, 2025EngineODI 11654706
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 7, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.