2017 Hyundai Elantra: engine failure

Filed Oct 24, 2026 · Engine · UT

Vehicle Information: Year/Make/Model: 2017 Hyundai Elantra Value Edition Mileage: ~135,000 miles Engine: 2.0L Nu 4-Cylinder VIN: [XXX] Incidence Summary: Engine internal failure, metallic debris/shavings found in oil, severe knocking noise, high risk of sudden engine stall/failure while driving. Detailed Description of the Incident: While driving home, the vehicle began producing a loud, severe metallic knocking noise from the engine compartment. The engine continued running, but the noise persisted throughout the trip. Upon inspecting the vehicle, a certified mechanic removed the engine oil and discovered a significant amount of metallic debris and metal shavings inside the oil pan, indicating severe internal engine component wear (connecting rod bearing / crankshaft failure). The mechanic advised that the engine is at immediate risk of seizing or experiencing complete catastrophic failure. Safety Risk: A sudden engine failure or seizure while driving on a highway or at high speeds creates a critical safety hazard, as it can cause an immediate loss of power, loss of power steering/braking assistance, and significantly increase the risk of a crash or rear-end collision for me and surrounding traffic. Current Status: The vehicle is no longer safe to drive and has been grounded to prevent complete engine lockup or serious road accidents. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 11, 2026 · Engine · VA

I bought my 2017 Hyundai Elantra SE earlier this year with about 119,000 miles. It had good maintenance records when I bought it, and it now has about 128,000 miles. Since buying it, I've had two oil changes done along with new spark plugs, coils, front brake pads, and tires. About two days before the engine failed, I noticed the car had suddenly burned through a significant amount of oil. There was no visible oil leak. The car stopped running, so I had it towed instead of continuing to drive it. Oil was added, and afterward it started and seemed to be running fine.The next day, I was driving approximately 70 mph on the interstate when the car suddenly lost acceleration and warning lights came on. There was smoke while I was driving, including smoke/fumes coming into the car. Afterward, there was oil everywhere. The car had to be towed again and is no longer drivable.What concerns me most is how quickly this happened. The car went from suddenly consuming oil with no visible leak to losing acceleration and experiencing a major engine failure while I was traveling 70 mph on the interstate. Losing power at that speed was dangerous, and the amount of oil and smoke also made me concerned about the possibility of a fire. Hyundai has told me the vehicle is no longer under warranty. I have not paid for an extensive engine teardown yet. My grandfather looked and he said it appears the engine threw a connecting rod through the side of the engine block. With the valve cover off, the engine looked brand new. I'm filing this complaint because an engine suddenly losing power at interstate speeds, along with oil and smoke, is a serious safety concern, especially with the potential for a fire. I hope the federal safety agency will compare this incident with other complaints involving engine failure and excessive oil consumption in 2017 Hyundai Elantras. Currently, it's available for inspection.

Filed Aug 17, 2026 · Engine · 108,404 miles · OK

The contact owns a 2017 Hyundai Elantra. The contact stated that while driving 50 MPH, there was an abnormal knocking sound coming from the engine. The contact pulled over to the right side of the road, turned off and restarted the vehicle, and the vehicle operated as intended. No warning light was illuminated. An independent mechanic was contacted. The vehicle was taken to an independent mechanic where it was diagnosed and determined that the engine needed to be replaced. The engine was replaced, and the vehicle was repaired. The manufacturer was not notified of the failure and referred the contact to the BBB to report the issue. The approximate failure mileage was 108,404.

Filed Mar 20, 2026 · Electrical, Engine · TX

I am filing a formal complaint regarding my 2017 Hyundai Elantra SE (VIN: [XXX] ). The vehicle is currently experiencing severe safety issues, including unexpected engine stalling and loud mechanical rattling, alongside a P0014 diagnostic code. These symptoms align directly with the defects described in Recall 203 (the federal safety agency 21V301000) involving improper piston ring heat treatment and Service Campaign 966regarding engine bearing wear. As a consumer, I am extremely concerned about the risk of a crash due to sudden loss of power. I am really concerned for my son and I as I drive my vehicle. I am requesting: 1. An immediate inspection and confirmation of eligibility for an engine replacement at no cost to me. 2. Verification of the lifetime long-block warranty extension associated with the KSDS (Campaign 966) update. 3. Provision of a loaner vehicle or rental reimbursement while my primary vehicle is unsafe to operate. Please assign a case manager to this matter and provide a timeline for resolution. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Feb 12, 2026 · Engine · GA

After no previous issues, car stalled out multiple times on short drive to work. No warning lights and no subsequent diagnostic codes were reported. Upon final restart, engine started knocking severely. Upon investigation, the oil stick showed no oil in the pan. Vehicle was towed to trusted, licensed mechanic for evaluation where we were informed about the potential of a failure due to rapid oil consumption. The mechanic confirmed the engine failure to to oil loss. Vehicle had received regular, documented maintenance and fluids were checked periodically between cycles. There was no low-fluid indicator prior to the mechanical failure. Dealership-level conversations confirmed the rapid oil consumption issue for the 2017 Elantra is common, but because the vehicle VIN was not listed as part of a prior recall no assistance could be provided to repair the engine. The dealer provided a full cost quote of $9,000 to replace the engine block with a remanufactured unit.

Filed Feb 6, 2026 · Engine · VA · fire

Driving on the highway in the far left lane. Check engine light came on, car stopped accelerating. Car came to a stop, car shut off. Smoke was coming out from under the hood and flames were seen underneath the car. Police and fire department arrived. Report states an electrical fire. Had car towed to Hyundai. Hyundai stated that the engine seized followed by the starter catching on fire. Car was only 2,000 miles in from last oil change. Was up to date on maintenance and safety inspection. Hyundai also stated there was a hole in the engine block. No prior issues with the car. The car would need roughly $16,000 in work done, confirmed by Hyundai. Car is now totaled. Car only had 121,000 miles on it.

Filed Jan 23, 2026 · Electrical, Engine · PA

While driving, pressing the accelerator pedal, the vehicle hesitated and stalled. No warning lights came on until after I attempted to turn the vehicle back on then the check engine light and low oil light were illuminated. My vehicle was towed to a local mechanic and I was informed that the engine was blown and to tow my car to a Hyundai dealership as I was still under the 10 year/100k mile warranty. After getting my car to Hyundai, I was told I had to get a combustion cleaning for $800 whether the cleaning worked or not before any warranty work could be completed. The cleaning did not work and it was then found that a pin was sheared off inside the engine. My engine was then replaced under warranty but I still had to pay for the cleaning. A second mechanic looked over my paperwork after getting my car back 2 months later and noted that the engine failure could have been diagnosed without the cleaning as the cleaning would not have affected where the pin was sheared off. My 2017 Elantra had 90,315 at the time of this incident.

Filed Jan 15, 2026 · Body, Electrical · VA

to whoever it is that can help, I am reaching out to submit a formal complaint regarding my 2017 Hyundai Elantra due to ongoing mechanical and structural issues that began very shortly after I purchased the vehicle, which have progressively worsened. I made the purchase in January 2024 for approximately $13,000 with 60,000 miles. The vehicle now currently has approximately 108,000 miles. Since purchasing the car, I have experienced consistent time consuming and serious issues that I believe indicate defects in manufacturing or design. First, the thermostat had failed during the first winter season I owned the Elantra, despite replacement the vehicle’s heating system still does not function properly. I’m not a fan of the cold. Also, the engine burns oil at an extreme rate. I am required to add oil literally every 2–3 days to prevent the engine from running dry, which presents a serious risk of engine failure and potential safety hazards while driving. And is also costly as oil is not cheap. In addition, the vehicle’s headlights developed spiderweb pattern cracking and shattered from the inside after approximately nine months of use, without any external damage. The paint has chipped across the vehicle, including in door jambs and other protected areas, suggesting poor paint quality. And recently, the lower engine underbody cover has completely broken down and disintegrated over time due to clips constantly falling out. Given the age of the vehicle and the normal use, the amount and severity of these issues are unacceptable. These defects have caused significant financial burden and raise serious concerns on vehicle safety and manufacturing quality. I am requesting that this complaint be reviewed for potential defects or recalls. I would also like Hyundai to be held accountable, either through compensation for the repairs required or replacement. Thank you for your time and attention to this matter. Sincerely, Owner of the 2017 Hyundai Elantra

Filed Jan 3, 2026 · Engine · IL

Component or System Involved Engine and internal lubrication system. The engine and related components are available for inspection upon request. Description of the Problem In January 2025, this vehicle experienced a catastrophic engine failure and seized. An independent repair facility inspected the engine and reported metal fragments in the engine oil, indicating internal engine damage. The vehicle was then transferred to a Hyundai-authorized dealership for major engine repairs, which were completed on January 18, 2025. Less than one year later, the vehicle developed excessive oil consumption. In October 2025, the engine stalled and was found to have no oil, despite having received an oil change approximately one month earlier. The vehicle is currently undergoing Phase 2 of Hyundai’s oil consumption testing. The dealership has indicated a full engine replacement will likely be required. Oil consumption has been measured at approximately 1.5 quarts per 1,000 miles. This vehicle is not currently included in Hyundai’s engine recall or warranty extension, despite being the same make, model, and model year as vehicles that are covered and exhibiting the same failure characteristics. Hyundai and the federal safety agency have documented similar engine defects on other Elantra models due to piston oil ring issues, resulting in excessive oil consumption and engine failure. My vehicle exhibits the same symptoms and failure mode. Safety Risk Excessive oil loss can result in sudden engine stalling or seizure without warning, creating a risk of loss of propulsion while driving, including at highway speeds. Confirmation or Reproduction of the Problem The failure has been confirmed by an independent repair facility and by a Hyundai-authorized dealership through inspection and ongoing oil consumption testing. Inspections by Others The vehicle has been inspected by both an independent repair facility and a Hyundai-authorized dealership.

Filed Dec 9, 2025 · Engine · TN

I've owned a 2017 Hyundai Elantra for a few years now, and it has been a headache. Over the course of the past year and a half, the engine has went out (seized) not once, not twice, but three times without any warning. I go to start the car one day and the engine bay starts shaking and power of the engine goes either completely out or down significantly. It feels like a gamble every few months of if my car will simply stop working. I've had the engine rebuilt twice already and will probably have to have it rebuilt again for the same issue (the timing).

Filed Aug 14, 2025 · Engine · OH

While driving down the road, the car lost complete power. No warning lights came on until after the car had lost power. Car struggled to start back up. I put flashers on in hopes that others would notice my disabled vehicle in the middle of the road, while it was also pouring down the rain. The vehicle was towed to my local dealership where it was confirmed that I would need a new engine. The engine had a high oil consumption issue that caused it to stale while driving. The dealership informed me either there was a rod bearing issue or a piston slap in the engine. They recommended to park the car until fixed

Filed Jun 12, 2025 · Engine, Transmission · FL

Timing chain looseness, Sudden loss of engine power/motive power. Vehicle was sold, unknown if available for inspection. Engine failure on and in the middle of the interstate/highway, and this caused a major crash risk, and safety hazard. This make and model of vehicle has multiple reports of similar incidents. The repairs would’ve cost over 3 times the value of the car. As stated by the vehicle manufacturer, the entire engine would need to be replaced, with a factory built engine in order to comply with the federal safety agency and safety regulations. I’m no longer in possession of the vehicle. It was sold. While the vehicle was operating, and drivable there would be a chime and a flashing check engine light/indicator on occasion. Although no codes were present at maintenance center, therefore unable to identify the exact cause.