general problems of the 2018 Hyundai Elantra

The dealership replaced my engine and spark plugs when the pistons were grinding metal causing a catastrophic failure in November of 2024. In July of 2025 I started experiencing the same issues and the dealership stated that Hyundais ignition coils have a high rate of failure because they changed the design and used my old ones from my engine replacement. It is now I brought my car into the dealership July 18th and they stated that was their best guess but they didn’t now forsure. I was never informed of the high rate of failure until I was experiencing it.

Engine is knocking cannot find a solution for this problem car stalls wen coming to a stop the car completely powers off , noticing a weird smell now ,.

I was driving about 45 mph when the car just turned off the first time. I was able to put it in neutral and start it back up to get to the side of the road and it died on me again. I was about 30 feet from my destination at this point so I got it where I was going and turned it off. When I turned it back on it was making a terrible knocking/grinding noise. It didn’t have a drop of oil in it (about a thousand miles after my last oil change mind you) so I put oil in it and started it again and the sound quit. I went to drive it and it died before I could accelerate to a decent speed, got it cranked and rolling again and it slowly got up to 40 mph, but the second I started to slow down again it would die. So I had it towed to my mechanic who at first thought it was because the timing chain had a lot of slack in it, assuming it jumped time so he changed that, but it was still dying. He ended up finding the cause to be the exhaust cam sprocket? I’ve never heard of this before but I do know that ever since I bought the car 3 years ago it never felt like it would get up and go whenever I hit the gas. Since I picked it up from being fixed, this thing zoom zooms everywhere now! but it is still using an ungodly amount of oil between oil changes.

When I drive my car shuts off in the middle of driving in traffic I almost got into an accident with my kids in the car the dealership doesn’t know what’s the problem they fixed a code of p0011 can anybody help because it’s a safety hazard with me and my family in the car please help feel like I’m just wasting money.

My Hyundai Elantra is a lemon. I have been having accelerating problems, stalling problems fresh from the lot even before 5,000 miles with my Hyundai not accelerating took it to dealer said nothing is wrong with it 5 years ago. It still continues to stall on me! it broke down on me twice in two days in a row. One on 8/8 and 8/9! could have killed me or others if I took it on the highway. My car has been stalling and I had to pump the break to rev up the engine at the same time while turning! could have killed us! I am sitting in a lemon! it is not safe on the road at all!! I lost my job because of this and the time it took me to try and get a rental. Hyundai won't let me get a loaner car! I cannot afford uber all the time. All the lights are on. Check engine light too and airbag light. My transmission seems to be slipping too and the double clutch. Crank and cam shaft problems! headlightw are very dim too. Airbag weight front seat sensor is turning on. Engine is stalling. Slows down! will not accelerate after 60mph goes super slow down to 55 mph up hill. I want Hyundai manufacturer to pay or I am getting a lemon lawyer and contacting the bbb and the state of arizona.

While driving at any speed, vehicle momentarily does not respond to any gas pedal input. Driver presses on gas pedal but no change in speed, no rpm change no warning lights on dash. After a few seconds vehicle responds again randomly. Puts driver at danger due to not being able to same speed as traffic very dangerous!.

We own a driving school. My husband was giving a road skills test for a student in our 2018 Hyundai Elantra. For unknown reasons the car rapidly accelerated. He told the driver to get off the accelerator. She said she was not on the accelerator. He looked over and her foot was on the brake. We have an instructor's brake and by pressing it my husband was able to overpower the Elantra accelerator they missed another car by inches, but he was able to stop the car. They continued down the road and the car's rpms where high. He tested the car by putting the transmission in neutral, the car revived but the student's foot was on the brake. They continued to the office using the instructor's brake to control it. After the car was shout off and restarted it never had this same issue. We just brought it to the dealership for inspection of problem. Our mechanic looked at the car but could not find a reason for the problem.

While driving, the acceleration stopped working and loud clanging noises were heard in the engine. There were no warning lights, nothing. I was driving on a busy road and the lack of acceleration created a major safety hazard for me and the vehicles around me. I eventually pulled over and restarted the car. It happened three more times on the way home. I got the car to my local mechanic and he said that it was the engine and it needed to be replaced. He saw this many times before on this model and told me to bring it to the dealer. I had the car towed to the Hyundai dealer/service center in milford, connecticut. I am waiting for them to look at it. I know that this has happened to many others with a 2018 Elantra and I am very upset that the car failed.

I have been having issues with my car since November 2021. My car would not go over 35 miles per hour, if I let my car sit for a couple of days I would have to jump my car. My check engine light came on and then 10 minutes later went off. So I finally got it in to the Hyundai dealership after months of them not having enough mechanics. So they did a multipoint inspection and came back saying the catalytic converter needed to be replaced even though no codes in the system. So I was coming back from florida when my car stopped accelerating on the highway and my check engine light. So I had to take the long way home which means no highways and anytime I stopped I had to throw my hazards on until it would pick up any speed. I took it to jiffy lube in SC and that's when my car was reading 8 different misfire codes so I did my tune up with them and that is when I was told that my engine valve was cracked and dumping oil on my spark plugs and coil pack. Yesterday my engine valve replaced and another set of spark plugs in 2 weeks and it is still reading misfire codes and still no change in acceleration. I have only had my car 4 years and my catalytic converter should not be gone. I have not really moved my car in 10 months because my husband passed and I had 2 surgeries. My family can't take another loss if something happens to me because of this car.

When accelerating after stop car lunges and then starts to move, since bought it I have told dealership several times they say nothing wrong that how it is. Also tires have all fell apart or went flat and have wire showing on inside . I feel this is safety concern and when buying a new car tires should last longer than 1 year I should not acceleration problems either. I have some picture.

I am drivng down the higway and I have it on cruise and it will jump up in speed by 3-7 miles and that is going stright not downhill or up hill then when I try to slow down using cruse it will not slow down I have to all most break the button when trying to slow down and it never did that before this just started to happing.

Car has intermittent problem with acceleration. Will go into a fail safe mode, wont accelerate past 40-60 mph. I have had very close call on multiple accidents due to the fact I am unable to accelerate. My car lost power and could not pick up speed at all. This is a major safety issue and the car dealership will not help me.

Tl-the contact owns a 2018 Hyundai Elantra. The contacted stated that while driving at various speeds, the vehicle will stall without warning. The contact stated that the vehicle would not accelerate intermittently when the contact depressed the gas pedal. The contact also stated that when they would turn the steering wheel left or right it would vibrate. The vehicle was taken to several dealers including 94-1299 ka ulka blvd, waipahu, hi 96797. The manufacturer was contacted and made aware of the failure but were unable to provide any further assistance. The vehicle was not diagnosed or repaired. The failure mileage was 3,400. Am.

The contact owns a 2018 Hyundai Elantra. The contact stated that there was a sudden loss of acceleration when the accelerator pedal was applied. The vehicle was taken to the dealer (empire Hyundai inc, 428 pleasant st, fall river, MA 02721, (508) 673-7646) more than twice, but they could not replicate and diagnose the failure due to no dtc. In addition, a service technician test drove the vehicle and was unable to duplicate the failure. The manufacturer was notified and indicated that they would provide a follow-up response to determine a solution. The approximate failure mileage was 50.