This vehicle has experienced numerous serious failures, including two engine replacements, a transmission replacement, and persistent safety system malfunctions. The Downhill Brake Control (DBC) system remains stuck in the "on" position, and the traction control warning light stays illuminated. These issues directly compromise vehicle safety and stability, particularly on hilly or wet roads. Despite extensive service at Arapahoe Hyundai in Centennial, CO, these problems continue to return. The vehicle has been in the shop multiple times and was most recently in service for nearly 30 days. My wife was stranded at the dealership today due to the same unresolved safety system failure. Dealer communication has been poor, and repairs are often incomplete, requiring immediate return visits. The repeated failure of safety-critical systems, combined with the inability to resolve the issues long-term, presents a significant safety concern for both my family and others on the road. I am requesting NHTSA to investigate whether this is part of a broader defect pattern affecting 2017 Hyundai Santa Fe models and if a recall is warranted.

- Arvada, CO, USA

Was driving on [XXX] (approximately 130 miles from home), when a loud clunking and metal on metal sound was heard, the causing power loss, slowing of vehicle and necessitated immediate pulling over to the side of the road. The was a catastrophic internal engine failure which caused the spark plugs to blow out. There were no warnings. The car was just inspected and had an oil change earlier in the month. The vehicle suffered sudden power loss and violent metal-on-metal destruction while transporting my child on [XXX] (130 miles from home). Certified diagnostics from Kennett Square Quick Lane Auto confirm: "Multiple spark plugs forcibly ejected due to severe internal engine damage -?" full replacement required". Quick Lane said they would not be able to replace the Engine. so the Vehicle was towed to Reliable Car Connection (West Chester, PA). I had tried to make an appointment at Piazza Hyundai, but the did not have appointments until Mid August. Result: Stranded overnight requiring hotel and towing/tolls at personal expense (receipts available). This traumatic event directly stems from Hyundai-??s acknowledged Theta II defects. Hyundai-??s Documented Failures: Recall Compliance: Recall 996 (Piazza Hyundai, 4/12/24) Recall 953 (1/31/19) Recall 163 (7/18/17) Maintenance: All services performed per Hyundai schedules (records available). Unresolved Defects: This failure matches: Recall 20VH4 (Lifetime Warranty Extension) Recall 20VH5 TSB 20-01-033H Current Status: Vehicle at Reliable Car Connection (West Chester, PA) after Piazza Hyundai-??s unacceptable 6-week delay. INOPERABLE & UNSAFE -?" Cannot transport children. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Kennett Square, PA, USA

2017 Santa Fe, car had fire in 09/2024 and was with dealership until 05/2025. BSD, ABS, TRACTION, and Parking Brake lights on the dash when vehicle was picked up. Dealership not complaint to pay as the assume it is an Outside issue

- Orlando, FL, USA

I bought this vehicle at Enterprise car sales back in [XXX] and it's been having issues for a while now recall after recall I bought this vehicle at 7745 Indiana avenue Riverside California 92504 I actually bought this vehicle without realizing that this car had a recall prior to buying it off the lot therefore in California law this company should have not sold the vehicle with a recall as Hyundai has warned me about this as he advised they cannot sell a vehicle with a recall on it. When I had to Google search my recall as I have not received a letter Enterprise car sales gained the letter for the recall prior to my buy and did not mention anything as this recall was sent out on the letter way prior to buying ever since buying this vehicle I have had numerous recalls as to now there is a GDI issue with the engines as I have made many complaints through the financing company Santander consumer USA, Hyundai, Enterprise car sales, and it seems like no one has listened to me on the lemon I have gained as I'm sure it sounds just like a complaining customer. I pay a very high interest rate and very high monthly payments 523 a month is expensive let alone expensive to pay for a vehicle that I constantly have to put in maintenance and now my engine is gone my VIN number somehow is not on regards to the recall but yet my VIN number has been on every recall Hyundai has ever given out when it comes to my vehicle as the GDI 3.3 l should be really considered on regards to a recall as well as the 2.4. I'm not very happy as I would like to have a voice on to what is fair I am sick of this vehicle having issues after issues as I do take care of my vehicles with good maintenance routine all I can ask for is to have someone here my voice and to take action either from Enterprise car sales to Hyundai which I believe Enterprise car sales is more reliable at this point than Hyundai since Hyundai let me be aware of the California law they cannot sell a vehicle with recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION

- Riverside, CA, USA

The vehicle started to stall/drive in limp mode. I took it to the Hyundai dealership, and they quoted me $5000 for repairs. The repair recommendations were as followed: ensure connecting rod bearings are within spec, recommending performing timing job w/replacement of intake camshaft, e-cvvt motor/gear, e-cvvt cover, and other components necessary for repairs. This engine burns/consumes oil and the engine code that shows up in P00100. All of this after I paid it off. Not within warranty anymore either. $22,000 down the drain it seems... called hyundai customer service to see if there was anything that could be done but they said there is nothing they can do and I have to fix it even though it is a manufacturing issue.

- Virginia Beach, VA, USA

Was going down the highway at 65 when my vehicle completely lost the accelerating component. Almost got rear ended so I pulled off. Then made it to work when it happened again. The engine light came on and gave 2 codes. Finally got it towed to the dealership where they have decided it-??s either a new timing chain or new engine due to mechanical loss. They discovered there was no oil in the car and they have also found metal shavings in my oil. Now they are telling me I need a whole new engine. I only have 124000 miles on this car. The car was driving perfectly fine the day before and had just been to the dealer and looked over 1,500 miles before and I was told everything was perfect working condition. I am out $4000 on a car I bought a year and a half ago in October 2023.Was told my warranty only lasted a year.

- Sparta, TN, USA

T3G Campaign 2017 Hyundai Santa Fe Sport AWD, 116000 miles. Purchased from a dealer in VA [XXX]. Never would have purchased if engine issues had been disclosed. The letter re:T3G campaign went out to dealers/service managers from Hyundai (of which I have a copy) is dated for October 2019. We never received any information regarding a T3G campaign. We took my car to the dealership on 12/16/24. (Valdese, NC). In 5 hours, they said they ran diagnostics & found the P0302 Misfire code. Without running further tests, they adamantly claimed there was a dead cylinder & the only fix was to replace the engine. Note: Spark plugs were replaced 2 weeks before this visit on Dec 1, 2024. They refused to listen to my concerns about the T3G campaign. Said vehicle didn't have that issue. That they couldn't run the tests because the P1326 code wasn't present (but it was in Sept). They didn't do anything about the current open recalls. They said they didn't have time. Corporate confirmed that my vehicle has had the correct service campaigns completed to qualify for the T3G campaign. I have called corporate twice-No response. We are very upset over the lack of care and solutions. We gave consent for work & nothing was done. The service manager was practically shouting that this car would leave me stranded, it wasn-??t safe to drive, & that the only option to fix was to replace the engine/get rid of it. I was basically told it wasn't worth fixing. Putting a new engine in would equal than the car is worth at trade in value. No one can give me a guarantee that a new engine (even brand new from the factory) would not have the same problem that is happening now. Make this right by immediately authorizing an engine replacement for my vehicle to include a loaner vehicle & tow charge cover. I am aware of the class action lawsuit from 2021. Hyundai refuses to issue a recall for this engine issue. Please see attached letter for more information. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Marion, NC, USA

Catastrophic engine failure without warning. Rod bearings blew car unable to produce power.

- Kansas City, MO, USA

While driving on rural side road, two lanes, my check engine light (yellow, steady) came on. I pulled into a safe spot and did a quick survey, checked the owner manual, but could not identify any problem, and continued on my way. The check engine light was still on. About 15 minutes later the car would not accelerate past 25 mph (limp mode?). I was on a two-lane mountain road, speed limit 45 (but most cars were faster), visibility limited by terrain, trees, etc. Again, there was little traffic around me and I found a safe place to pull over. in neutral the engine revved normally. I turned the ignition off, checked oil level, (normal), turned the engine back on and started driving to find a safe place to pull over and summon help, but the car drove normally. I drove directly to my repair shop and had the codes pulled, (0436, 0021) which indicate a problem with timing. When a qualified tech examined it he recommended taking to the dealer. Unwilling to drive in traffic, I had it towed to the dealership. Their inspection revealed damage to CVVT components and the timing chain, and recommend an (expensive) engine rebuild.

- Penn Vlley, CA, USA

While driving a 1/2 second squeal came from engine compartment. Motor immediately stopped. No power steering or brakes. Vehicle is available for inspection. We were on an interstate We coasted to shoulder. There issue is frequent on Internet forums. A trusted mechanic old us the engine was totally seized. Could be turned manually. No oil in crankcase. At this time only aforementioned mechanic has inspected the vehicle. No warning sounds or performance changes prior to incident. No warning lights or notice warnings were seen prior coincident.

- Mill Creek, WA, USA

The contact owns a 2017 Hyundai Santa Fe. The contact stated that while driving at slow speeds, the vehicle briefly shifted erratically, slamming into gear and violently lunging forward. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to the dealer, who was unable to duplicate the failure. The vehicle was not repaired. The vehicle was taken to another dealer, who was also unable to duplicate the failure. The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was unknown.

- Raleigh, NC, USA

The car has intermittent hard upshift from 1st to 2nd gear. It feels as if the transmission seems to slip for a moment then jolts the car, making a hard bang noise and jerking forward, and at times spinning the rear wheels. If I stop the car, turn off the engine and restart it clears the issue. It does not throw off any codes. I have taken it to the Hyundai Dealer several times and they have verified it with me while in the car but since it does not give a code or warning lights they tell me they cannot fix it. Hyundai corporate has also been made aware. This started at 77K miles and has been occurring for the last 3 years. I have brought it into hyundai over a dozen times for the concern. I have several videos of the issue

- Santa Rosa, CA, USA

The vehicle suddenly shut down while driving and the wheels locked up. There were no warning indicators at all. The failure happened to occur on a residential street, but if at speed on a highway this likely would have resulted an an accident. Upon inspection at the dealership it was determined that a connecting rod bearing failed and the rod had created a nearly 3 inch split in the engine block.

- Happy Valley, OR, USA

I had just dropped my son off at the barbershop by my apartment. As I left the parking lot I proceeded to pull out into the street, as i tried to accelerate the car sputtered & lost all power. I then coasted into a nearby Wendy's. I parked & tried to crank the car to no avail. I then noticed a burning smell followed by some smoke. I had no dash lights prior to indicate any issues. I ended up calling my insurance to get help with the vehicle. Long story short the starter, coil pack & plugs along with the engine had to be replaced.2

- Durham, NC, USA

Was going down the highway at 65 when my vehicle completely lost the accelerating component. Almost got rear ended so I pulled off. Then made it to work when it happened again. The engine light came on and gave 2 codes. Finally got it towed to the dealership where they have decided it-??s either a new timing chain or new engine due to mechanical loss. They discovered there was no oil in the car and they have also found metal shavings in my oil. Now they are telling me I need a whole new engine. I only have 135,644 miles on this car. The car was driving perfectly fine the day before and had just been to the dealer and looked over 1,500 miles before and I was told everything was perfect working condition.

- Ellijay, GA, USA

On [XXX] (a Sunday, 9 pm), my 19 year old daughter was driving our 2017 Hyundai Santa Fe Limited when a solid yellow check engine light came on. No other warning lights were on. She called us, but since a solid check engine light should not indicate an emergent issue, we advised her to carefully drive the car back to school and we'd get it checked out the next day (since it was after 9 pm on a Sunday). The vehicle didn't make it that far. While driving, the car suddenly lost power and stalled. It started up again but made a terrible sound. We were able to call roadside assistance and had the vehicle towed to a nearby Hyundai dealership. The dealership tells us the car needs a new engine and that our VIN it is not covered under any of the other current engine recalls (even though this is the exact same issue as those recalls) and also said they will not repair under the 100,000 mile warranty, since we are the 2nd owners. We are awaiting a report from the dealership on exactly what happened to kill the engine, but we can infer, through the discussion with the service manage, that this is exactly the same issue happening with other versions of the Santa Fe engine -- including complete engine seizure without any accompanying warning lights or indications. This poses an imminent risk to the safety of drivers and passengers. My daughter was 20 minutes from her college dorm, late at night, and we can only be thankful she was not driving at high speed on the highway when the engine seizure occurred and also that she was not left stranded in an unpopulated stretch of highway. The vehicle is currently at Steele Hyundai (address: 24795 I-35, Kyle, TX 78640. Phone number: (512) 262-2020 ). They have quoted $13,000 for a used replacement engine. Please issue a recall on the 3.3l GDI engine. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Frisco, TX, USA

My wife was driving down the freeway to work during morning commute when her 2017 Santa Fe just lost power, was only able to go maybe 20mph which during an early morning Bay Area commute is very dangerous... No engine light or any warning lights, this lasted for a couple miles until the next exit she pulled off still no warning indicators showing, she turned off the car for a few minutes, then turned it back on to continue to work there was still almost no power but no indicators on the dash, finally after a few minutes started driving normal again. The next day when she was on her way to work, she started getting an oil light, I drove 45min to her job checked and oil level was fine, turns out oil pressure sensor was bad. After that was replaced everything seemed normal for around 1month or so then noticed excessive oil consumption, needing to add 1qt every 1500-2000 mi, no oil leaking onto out driveway and can't see any oil leaks visually around engine. Oil consumption has gotten progressively worse, we keep it topped off every couple weeks. No we are getting check engine light and tapping sound on passenger side of engine. Codes P0346, P0021 and P0087, power is fine but tapping sounds bad and worried of failure while driving.

- Fairfield, CA, USA

Oil compsumption noted and leakage noted by mechanic. Informed me could cause a fire in engine compartment. Unsafe to drive. I rented a car.. Engine burning oil, high oil consumption, oil leak. Reported to Hyundai. Took vehicle to Kerry Hyundai, Alexandria, Ky. Was informed that Hyundai won-??t take care of it. Filed a complaint. Mediation through The Better Business Burrau. Claim was denied. I was not driving the car for a couple weeks. I am guardian of 2 school age children transporting to and from school and activities and was concerned for our safety. Took vehicle to Superior Hyundai, Cincinnati, Ohio for an oil change and reported an oil leak. Was informed there was no oil leak. Had oil changes at Valvoline, Newport, Ky, No report of oil leak. Walmart, Ft Wright, Ky pointed out leak from oil pan. Replaced oil pan. Check engine light came on. Took vehicle to Konen-??s Pittstop, Bellevue, Ky who repaired oil leak. Continued oil check for consumption. Again check engine light illumination. Recently Replaced spark plugs & wires, catalytic converter. Engine running rough. Valves going bad. If car stalls on highway an accident could occur. Hyundai has a recall in the same year and make but not for those manufactured in the state of Alabama. The dealership inspection was about a year ago at Kerry Hyundai, Alexandria, Ky. They only recommended oil changes. I cannot afford the additional engine repairs. Hyundai has prior knowledge of the engine defect and refuses a recall thereby endangering peoples lives.

- Dayton , KY, USA

I first brought my car into a Hyundai certified service center after my car shook violently and my check engine light started flashing at me. I had to pull over on the side of a busy highway which is a safety risk on it's own. the Hyundai service center "fixed" my car and I was on my way. this was In September of 2023. on February 14th 2024 the same thing happened leaving me stranded on the side of another busy highway during rush hour traffic. I got the car towed to a dealer and they are telling me I need to replace my engine since there is a malfunction with the exact same parts that they replaced in September. In September They pretty much rebuilt my engine and now, less then 6 months later, they are telling me my engine is shot and needs to be replaced. How could $6,000 worth of engine parts fail after less than 6 month" not only is that not stable financially for anyone who owns one of these vehicles, it is a huge safety risk! even if I do replace the engine in my car, when will it go out again? 5 months? maybe 6 if I am lucky? at least the last 2 times, I was lucky enough to be in the right lane already and make it to the side of the road in time. What happens if that is not the case next time"

- Sartell, MN, USA

The contact owns a 2017 Hyundai Santa Fe. The contact stated that during cold starts, the vehicle experienced hard shifting from first to second gear. After restarting the vehicle, the failure was corrected. The vehicle was taken to the local transmission specialist who was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer and local dealer were notified of the failure. The failure mileage was 105,000.

- Jacksonville, FL, USA