2024 Hyundai Elantra Engine Problems

The contact owns a 2024 Hyundai Elantra. The contact stated that while driving, check engine light illuminated, with a loss of power when accelerating. The vehicle was taken to the dealer where it was diagnosed with power train failure and received diagnostic code P040100. The vehicle was repaired; however, the issue persisted. The vehicle was returned to the dealer multiple times but still continued The manufacturer was notified of the failure. The approximate failure mileage was 43,000.

NHTSA ID

11741490

Incident

Mar 25, 2026

Mileage

43,000 mi

The Gas pedal, would not work as I was trying to accelerate when going from the ramp onto the freeway. The pedal had no pump in it, it just went all the way down as I was trying to press and the car started slowing down. I had to pull over on the side of the freeway and restart the car for the pedal to start working again. I came to the dealership the next day on 12/5/25, at around 5:45pm in which I was scheduled to come back at 8am on 12/6/25. My safety was at risk, because the car lost pedal power for me to pickup speed as I merged onto the freeway. I brought it in for inspection, at the dealership I purchased it from. There were not any signals or displays that came on during the incident.

NHTSA ID

11703440

Incident

Dec 4, 2025

When you accelerate & let off the gas pedal, the vehicle still accelerated for 2 seconds after you release the gas pedal. It is like there is a delay with drive by wire signal. This situation can cause rear end collisions & hard panic braking. Please recall this situation to prevent higher insurance cost & increased accidents!

NHTSA ID

11677506

Incident

Jul 31, 2025

My oil plug fell out causing engine damage. They are saying it is fault of wal mart who did last oil change but 2 months and 12,000 miles have passed since oil change and they will not cover under warranty

NHTSA ID

11672727

Incident

Jun 13, 2025

I had my oil changed in September at McGovern Hyundai in Leominster, MA. I have the invoice on file and my app that I have with them. I went out of town on [XXX]. At approximately [XXX], I heard a loud pop, saw smoke and immediately pulled over, a large amount of oil came out of the bottom of my car. The car was undrivable and I had to have it towed to the closest Hyundai dealership in North Plainfield, NJ. They provided me with a write up that stated I need a new engine due to the damage. We called McGovern and they are claiming that is isn't their issue and to contact my insurance company or cooperate. The cost right now is over $11,000, $300 for a tow, $200 for an uber driver to my destination where I was going, $223.86 for a diagnostic test, $350 car rental for my parents to come and get me, approximately $100 in gas fees to get me and my dad lost a day of pay. This all happened just a little over 1,000 miles and there is only 14,421 miles on the car. The dealership I bought it from isn't taking responsibility for it and Hyundai has yet to. This happened on a major highway on NJ and I was left on the side of the highway alone for over 2 hours waiting for a tow. This was such a scary and dangerous position to be in. This seems to be an issue with Hyundai cars and they aren't helping. I am now without a car and no one seems to care. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11626808

Incident

Nov 15, 2024

I was driving around 34 miles per hour in traffic and my speedometer turned red indicating a problem. I attempted to accelerate in traffic and it made a funny noise and would not speed up. I was able to drive home which was about a mile away. Once I got home I turned the vehicle off and back on and the speedometer was blue again. I took it to the dealer and they advise they could not locate the problem , They put it on a level 3 scope and drove it a lot. Since then it happened as I left home and I stopped the vehicle and started it again which solved the problem. The car has around 3100 miles.I was not at risk because I was in slow traffic and could run about 30 mph during the first event.

NHTSA ID

11625564

Incident

Nov 5, 2024

Vehicle shut off 8 times on my wife while driving. Check engine light did come on with a warning from the vehicle stating a possible issue with our Engine Control System. Shortly after, while ON the roadway, at about 35-40 mph, the car completely shut off. Luckily my wife was going to a church and the church men were able to push her car safely, with our kids inside, off the roadway and into the parking lot. Hyundai Roadside Assistance was contacted and vehicle was towed to Matt Bowers Hyundai in Gulfport, MS on June 5th. During a 12 day stint at the dealership, it was determined that the problem was caused by the open safety campaign (Bulletin 206) and the EGR Valve Assembly was replaced. We took back delivery of the vehicle June 18th, 13 days after the tow/problem.

NHTSA ID

11595178

Incident

Jun 5, 2024

New vehicle was recently purchased at Hyundai dealership odometer reading 8 miles only. Four days later while driving the engine turns off and all dashboard lights start flashing vehicle stops completely in the middle of the road I immediately turned-on emergency lights to make the cars behind me aware. Looking on my rear mirror I notice a vehicle wasn't stopping and I was about to get rear ended so I suddenly wave my hand out, thankfully he passed right by me, and all traffic slowly comes to a complete stop. There was no warning lamps, messages or problem prior failure. I took the vehicle back to dealership for service maintenance I was informed no problem was found and it was a onetime thing they guaranteed me it wouldn't happened again and unfortunately it did.

NHTSA ID

11586691

Incident

Apr 16, 2024