2018 Hyundai Elantra

I have a 2018 Hyundai Elantra with about 155k miles. It has been consuming oil excessively and has developed serious drivability issues. If I try to accelerate even slightly harder than normal—especially above 2,000 RPM—it makes a metallic, chain-type rattling noise, loses power, and produces heavy smoke from the exhaust. The smoke sometimes continues even after shutting the engine off and restarting. Because of this, I’ve been avoiding rapid acceleration and slowly working up to highway speeds. The car also periodically shakes at idle, idles higher than normal at times, and the RPMs will occasionally rise on their own. In the past it has stalled randomly, and sometimes it feels like the transmission is “stuck” and won’t shift properly. Despite all this, there are currently no check-engine codes. This is terrible and clearly there’s been lawsuits and other recalls regarding the same issue and same engine but nothing for mine? I am out of warranty and had no clue the amount of issues the car was going to have until last year and I’m screwed now, insurance doesn’t cover issues with the engine or transmission. Neither will Hyundai?! Last year Hyundai performed a CVVT repair that cost about $6,000, which temporarily improved things, but the symptoms returned shortly afterward. When I brought it back, they said they couldn’t recreate the issue. The car is now out of warranty. Separately, the car was stolen two months ago due to the immobilization fault and TIk TOKs videos and the police said it has been hundreds of these Elantras stolen and destroyd and the ignition and wiper control switch/harness were damaged, which still hasn’t been repaired.

Initial Fault Code: P0303 Replaced all 4 spark plugs and all 4 ignition coils. The check engine light extinguished momentarily but returned, logging P0303 and a new P0301 Replaced all 4 fuel injectors. CEL extinguished momentarily and then returned, logging P0303. Replaced the entire engine electrical harness. Concurrently, all related electrical components and connectors were meticulously cleaned with professional contact cleaner. CEL extinguished for significantly longer period of time, and then returned, re-logging P0303 and P0301. Thid suggested the ECU was "handshaking" with new components but re-logging the fault upon detecting the persistent core issue. A full compression test was performed. All cylinders reported results within specification. Using a borescope I inspected cylinder walls in piston tops. There was significant carbon residue buildup but nothing out of the ordinary for similar GDI engines. I still performed a PEA GDI specific chemical cleaning. It was a a little smoother afterwards, but the misfire persisted and CEL remained on. I also removed, cleaned, and tested common sensor faults, with no result. Also p0128 code and no start / electrical drain, and engine light started flashing numerous occasions had to stop the vehicle. I tried swapping the coils, but all that proved was that the coil was good, I did a power and ground test, it passed the connector had 12 plus volt power and a perfect resistance to static ground. The signal wire from the coil connector had perfect continuity to the ECU but had OL to chassis ground showing there was no short. A test light was used to see if anything was coming from the signal wire to the ignition coil and that test failed, there was no signal pulse. The diagnostic process has definitively proven a component-level failure inside the engine control unit. See attached file for more detailed information.

In early May 2023 I was driving my 2018 Elantra vehicle on the expressway. I had hot an area where there was traffic and had to slow down and move along with the speeds everyone else was going. When I slowed down my engine quit. Everything turned off and the car was stalled. I was able to turn the car back on and start the engine but there was a loud knocking sound coming from the engine and when applying my foot on the gas it wasn't going anywhere. It stalled in traffic again. I put it in park, and restarted it and got enough gas for it to move and get off the main road. I called a tow company and had a certified mechanic take apart the engine $600 and Inform me the engine was shot. The car had maybe 80,000 miles on it. I had no idea what to do. The car sat at the repair shop for several weeks while I figured out what to do. I had it towed to a Hyundai dealership and had them look at it. They told me that there was no recall and that since I wasn't the original owner their powertrain warrenty was not valid. They did their diagnosis, another $300 just for them to tell me the same thing the other mechanics told me, the engine was shot and needed to be replaced. They put together a list of items that needed to be replaced and repaired and it came out to over $17,000 and Hyundai would do nothing for me. A vehicle with less than 80,000 that's engine fails is a recall in my book. It's now been over 2 years and I continue to pay for a car I cannot drive, and Hyundai still doesn't accept responsibility. This is a faulty car and would never recommend to anyone. Look at all the complaints regarding the engine and powertrain, obviously this is an issue. Hyundai needs to acknowledge this and replace these failing engines. Maybe by the time I'm done paying this car off they will take responsibility and the NHTSA will fully support the individuals that are owed a vehicle or engine replacement.

the car keeps lagging on acceleration i had the throttle body checked and cleaned and they said it was fine i have been doing all maintenance required by manufacturer, but sometimes is lacking on the power loses acceleration, i see these model has a recall but when i entered my vin number doesn't show up so i am concerned why is not covered as it could lead to my car been stalled in the middle of the highway, dealer wants 300 dollars just to take it in and usually they can't reproduce the issue , what should i do in this case, i dont want to wait until i have an accident for this to be checked thank you

While driving vehicle the black nylon fuel line started spraying fuel over the top of the hot engine. At highway speed the passenger compartment filled up with gasoline fumes. Pulled over to open the hood and saw fuel streaming from the fuel line on top of engine. Vehicle was shut down, and AAA towing called to tow vehicle 85 miles from StAugustine Fl, to Gainesville Florida to Hyundai Dealership of Gainesville. The vehicle has been in the shop on [XXX], for repairs. This vehicle only has 44000 miles on it. Hyundai states that they don’t have the fuel line in the USA and had to order the part from Korea. I was stranded 352 miles from my home. I called Hyundai corporate to notify them of this issue with the defective fuel line. They said there is no recall on this part, and not covered under the 10 year 100,000 mile warranty. They told me it’s going to cost me $1124.26 for the repair. I almost lost my life potentially being barbecued in this vehicle, not to mention other innocent people getting hurt. I have owned many cars in my lifetime and this is the most dangerous vehicle I ever had. Potential to explode and catch fire while driving on expressway. I think NHTSA should look into this vehicles safety before other innocent people get killed. An extremely dangerous road hazard. Note this vehicle only has 44,000 miles and is maintained properly. Hyundai doesn’t care about safety, and their customers. When I purchased this vehicle they told me how safe it was and the best auto warranty in the world. Please look into this fuel line defect before someone gets severely injured or killed by fire. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

This has happened a couple of times where in the middle of driving, my car automatically shuts off, I can not turn my steering wheel I can not push the brakes, everything stops working. I have to wait till my car comes to a complete stop on its own, put the car in park, turn off the ignition, turn my keys and start my car again. Then it sometimes acts like there is no power to accelerate when I'm at a full stop. RPMs go crazy, but acceleration doesn't occur. No warnings have ever come up. I received an notice about a recall, but it's for 2019 Elantra and up. Mine is a 2018, but the issues for that recall is the same thing that is happening with my car. This is DANGEROUS and can lead to serious repercussions or even death. Something needs to be done to fix this. I don't not have thousands of dollars to pay for an issue with the manufacturer.