What 459 owners told NHTSA about the 2011 Hyundai Elantra Gt

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 engine failure. A settlement offered extended warranties, engine repairs, and reimbursement. I was unaware and have already spent tons of money towards repairs to the engine over the years. Now I am aware of this lawsuit and would like some kind replacement.

NHTSA ODI 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 electrical..I have a brand new battery and a complete tune up on the car..I have not been able to drive the car in 3 weeks

NHTSA ODI 11655110

UnKnown. When financing the vehicle through Adonis Auto Group I was unaware of the unrepaired safety recall. Also I am under the impression nothing was done to the car before purchasing it, I have had to make repairs to the car only after 10,000 - 15,000 miles of driving. For example replacing the control arm, axle, brake hardware. My point is they are selling cars without repairing them and not advising the customer upon purchase. I also asked for the repair paperwork for what has been done to the car before purchase and never received it.

NHTSA ODI 11589419

Unknown Sensors possibly is the issue

NHTSA ODI 11579468

They have failed to address the recall in a timely manner. Sep 22,2023 Manufacturer Recall Number251 NHTSA Recall Number23V651000

NHTSA ODI 11570443

When I start the engine, I hear pronounced knocking sounds in the engine for approximately 1-2 seconds, and they are quite loud. As the engine warms up, the knocking persists, albeit at a lower volume. The ongoing knocks are not as loud, resembling a consistent noise similar to that of a diesel engine, although it is not a diesel-powered vehicle

NHTSA ODI 11564757

There's a piston slap ,the engine block is damaged to the risk pin bushing ,connecting rods needs replacing the piston slap noise is in the upper end of the engine ,the gas tank want hold gas

NHTSA ODI 11529486

10 am Sunday morning going to church I am about 2 miles away from home I started hearing trickled sound at front before entering the freeway. Then about 5 miles before my exit the noise start to get louder and I decided to go 25 mph after I exited the freeway. I stopped at AutoZone parking lot to check and didn't find anything unusual.No engine lights or anything on the dashboard. After 2 hours parked at AutoZone I drove it home at slow speed and decided not to use the freeway so I can keep moving 25 mph max. It's a scary situation and good thing is I'm the driving not my wife. It has closed to 130,000 miles.

NHTSA ODI 11506880

The contact owns a 2011 Hyundai Elantra. The contact stated while driving 40 MPH, she heard an abnormal sound coming from the front of the vehicle. The contact stated no warning light was illuminated. The contact was able to continue driving to her destination. The contact took the vehicle to the local dealer, where it was diagnosed with needing a piston to be replaced. The vehicle was not repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 123,500.

NHTSA ODI 11502429

Had oil changed at Take 5 recently as always do. 2 weeks later car cut off 3 times in traffic. Engine light came on. Car started to lose power/acceleration and engine began to make a ticking/knocking sound. I checked the oil and none was in it. I added 4 quarts to see would that help. It did not.

NHTSA ODI 11500778

The 2011 Hyundai Elantra false starts. I’ve changed the battery and gotten a tune up. I’ve taken it into the dealership and paid for a diagnostic, even the Hyundai dealership says they cannot explain why the car is false starting. I believe it is my engine. But why isn’t my car Included in the engine recall?

NHTSA ODI 11489890

My car stalls while in motion without warning. While driving the vehicle will randomly speed up and rpm will fly up without command. I also experience a lot of engine power loss randomly the vehicle will bog and be slow. Occasionally when I press on the accelerator I can almost go to the floor with no response from the vehicle. Speed acceleration response is delayed approximately 30 seconds occasionally. Uncommanded acceleration and random stalling when vehicle is in motion has been a big safety risk for me. This issue has been ongoing for awhile. This issue has occurred countless times so it’s very frequent. This complaint is in compliance with the current open investigation regarding the throttle control system vulnerabilities. NHTSA Action Number: DP21003

NHTSA ODI 11489212

The contact owns a 2011 Hyundai Elantra. The contact stated that while driving at an undisclosed speed, the vehicle hesitated during acceleration with the check engine warning light illuminated. The vehicle was taken to several independent mechanics who diagnosed that the engine and battery needed to be replaced. The dealer was made aware of the failure but provided no assistance. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 125,000.

NHTSA ODI 11467869

ENGINE KNOCKING NOISE, EVEN AFTER ENGINE REPLACEMENT BY CAR REPAIR SHOP, ENGINE TICKS AGAIN. ALL 2011 HYUNDAI ELANTRA'S ENGINE TICKS UNNATURALLY.

NHTSA ODI 11455799

The contact owns a 2011 Hyundai Elantra. The contact stated that the vehicle was serviced at the dealer for an engine failure and after retrieving the vehicle the check engine light would remain illuminated while driving. The vehicle was taken back to the dealer who diagnosed that the engine was again faulty and needed additional repairs. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was 109,000.

NHTSA ODI 11448842

ENGINE KNOCKING NOISE, EVEN AFTER ENGINE REPLACEMENT BY CAR REPAIR SHOP, ENGINE TICKS AGAIN. ALL 2011 HYUNDAI ELANTRA'S ENGINE TICKS UNNATURALLY.

NHTSA ODI 11407512

THE BATTERY WON'T CHARGE AND CAUSING THE REMOTES TO KEEP GOING OUT AND I'M UNABLE TO START MY CAR WITH THE PUSH START REMOTE. THE BATTERY AND REMOTES WERE JUST REPLACED IN NOVEMBER 2020 & IT IS NOW GIVING ME THE SAME ISSUES AGAIN. I CAME BACK TO START MY PARKED CAR & IT WON'T START.

NHTSA ODI 11406793

MY VEHICLE DOESN'T FEEL SAFE AND THIS IS THE SECOND REPORT I MAKE. PLEASE CONTACT ME ABOUT THIS MATTER. THANK YOU!

NHTSA ODI 11390995

ENGINE HAS TROUBLE STARTING OR STALLS OFTEN. WAS TOLD TO REPLACE WHOLE ENGINE WHEN I WENT IN AWHILE AGO DUE TO ISSUE OF STARTING, NOISE AND OIL LEAK. TPMS SENSOR I THINK IS SHOT TO EVERY TIME I FILL UP AIR IT STILL SUGGESTS ISSUE WITH TIRES. WINDOWS ALSO GET STUCK DOWN OR UP.

NHTSA ODI 11378238

THE PROBLEM WITH MY VEHICLE ARE MANY. WHEN IM DRIVING IT THROWS ME TO THE SIDE FOR ANY DENTS THE STREET HAS, BAD CONTROL. THE COILS ARE BAD. THE ENGINE BLOCK HAS A NOISE THAT GETS LOUDER AND LOUDER EVERY TIME I TURN THE CAR.IM NOT A MECHANIC BUT I KNOW SOMETHING WRONG WITH MY CAR CONTROL SYSTEM.

NHTSA ODI 11373581

WHEN GOING AT LOW SPEEDS IN TRAFFIC CAR SHUTS OFF AFTER PRESSING BREAK TOO MUCH. CAR SHUTS OFF IN REVERSE. CAR SHUTS OFF WHILE MAKING TURNS AND HITTING BREAK SIMULTANEOUSLY. GOING OVER 60 MPH CAUSES CAR TO SHUT OFF MULTIPLE TIMES EVERY FEW MINUTES OR EVEN SECONDS. (WORST WAS 9 TIMES IN UNDER 2 MINUTES) CAR SHUTS OFF SLOWING DOWN TO RED LIGHT. HAD CAR CHECKED NUMEROUS TIMES BY MECHANICS. NOONE CAN FIGURE IT OUT. NO CODE COMES UP WHEN PLUGGED INTO COMPUTER AT AUTOSHOP. ALOT OF OTHER PEOPLE HAVE REPORTED THIS ISSUE WITH SAME MAKE AND MODEL

NHTSA ODI 11365065

MY DAILY DRIVER BEGAN TO MAKE A KNOCKING NOISE AND MY DASHBOARD BREAK LIGHT INDICATOR CAME ON. I IMMEDIATELY SCHEDULED SERVICE WITH MY HYUNDAI DEALER. BUT IT DID NOT MAKE THE (2) DAYS WAIT. WHILE DRIVING AT HIGHWAY SPEED THE FRONT END BEGAN TO INTERMITTENTLY PULL TO THE RIGHT AS IF THE RIGHT FRONT BRAKE WAS BEING TAPPED INDEPENDENTLY. WITHIN MINUTES ALL OF THE ELECTRICAL SHUT OFF AND THE ENGINE STALLED. I DRIFTED TO THE SIDE OF THE ROAD. AFTER SEVERAL ATTEMPTS THE ELECTRICAL DID COME BACK ON BUT THE ENGINE WOULD NOT TURN OVER. I HAD THE VEHICLE TOWED TO CLOSEST HYUNDAI DEALER, WHO SAID THE ENGINE NEEDED TO BE REPLACED AND ALL THAT WAS AVAILABLE WAS A USED ENGINE WITH 60,000 MILES ON IT AT AN APPROXIMATE COST OF 5,000.00 DOLLARS WITH NO GUARANTEE THAT IT MAY REQUIRE ADDITIONAL REPAIRS.

NHTSA ODI 11361657

KNOCKING NOISE ON ENGINE I HAVE DONE ALL THE OIL CHANGE ON TIME IT ONLY HAS 60000 MILES WHAT'S GOING ON A LOT OF PEOPLE ARE COMPLAINING AND HYUNDAI IS NOT DOING ANYTHING I PAYED A LOT FOR THIS CAR MONTHS AGO AND NOW

NHTSA ODI 11322467

THERE WAS TOTAL ENGINE FAILURE WHEN THE CAR REACHED ABOUT 80K MILES. THIS IS KNOWN FOR IN THE 2011 HYUNDAI ELANTRAS BUT HYUNDIA HAS YET TO RECALL THE ELANTRAS JUST THE SONATAS. DESPITE CONSTANT AND FREQUENT OIL CHANGES OIL SLUDGE FORMED AND ENTERED THE ENGINE COMPARTMENT COMPLETELY RENDERING IT UNREPAIRABLE. A "NEW" ENGINE HAD TO BE PLACED BUT I WAS WARNED THE PROBLEM COULD OCCUR AGAIN BUT A RECALL STILL HAS NOT BEEN ISSUED. THIS IS DANGEROUS AS THE ENGINE WAS SPUTTING OUT, MISFIRING AND BLUE SMOKE WAS BEING RELEASED FROM THE EXHAUST DUE TO THIS

NHTSA ODI 11315721

MY CAR HAS HAD ENGINE LIGHT ON OVER ONE YEAR SINCE I BOUGHT IT USED, DIFFERENT SHOP TRIED TO FIX IT BUT THEY CAN'T GET IT ,THEY SAID IT IS BECAUSE OF VEHICLE BAD SYSTEM ITSELF SO WHY IT SHAKES EVERY SINGLE TIME,ELECTRICAL POWER SYSTEM IS NOT GOOD,THE HEATING SYSTEM WAS DOWN,THE FIXED IT A COUPLE DAYS FROM NOW BUT STILL IT ISN'T WORKING PROPERLY.THE PROBLEM CAME IN WHEN I WAS DRIVING IN HIGHWAY I-295 MAINE STATE.

NHTSA ODI 11308406