For approximately the past year, my 2021 Hyundai Santa Fe, currently with about 23,000 miles, has experienced intermittent engine and fuel-system problems. During start-up, the vehicle sometimes makes an abnormal rattling/cranking noise, followed by noticeable engine and vehicle vibration. Warning lights may appear, and on some occasions the engine does not start successfully on the first attempt. When it does start, it may initially run rough. The vehicle has also stalled intermittently and has had repeated incidents where pressing the accelerator produced little to no engine response or acceleration. This creates a serious safety concern because the vehicle may unexpectedly stall, lose power, or fail to accelerate when needed while driving. The vehicle has been at an authorized Hyundai dealership for more than one month. The dealership has been working with Hyundai Tech Line and has replaced or evaluated the low-pressure fuel pump, high-pressure fuel injector, high-pressure fuel pump, MPI/port fuel injector, and valve cover. The latest recommendation is to drain, clean, and refill the fuel tank. Despite these repair attempts, the root cause has not been clearly identified or permanently resolved. I am concerned that the repair process has become trial and error, with additional components being replaced while the underlying safety-related issue remains unresolved. I am also being asked to pay out-of-pocket for some of these unsuccessful repair attempts. The vehicle is currently at the Hyundai dealership and is available for inspection if needed.
The worst 2021 Hyundai Santa Fe problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Transmission51
- Engine38
- Electrical29
- Driver assistance26
- Visibility14
- Fuel system12
- Acceleration7
- Brakes6
- Body3
- Seat belts3
- Airbags2
- Lights2
- Seats2
- Locks1
- Steering1
- Tires1
Specific symptoms reported on the 2021 Hyundai Santa Fe
Check engine light 20Stalling 14Loss of power 13Hesitation 10Transmission failure 7Adaptive cruise 6Sunroof shattered 6Backup camera 5
Recalls 7
Back over prevention: sensing system: camera
- What is wrong
- Hyundai Motor America (Hyundai) is recalling certain 2021-2022 Santa Fe, Santa Fe HEV, Elantra, Elantra HEV and 2022 Elantra N and Santa Fe PHEV vehicles. Due to a damaged printed circuit board, the rearview camera image may fail to display. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
- Risk
- A rearview image that does not display reduces the driver's visibility and increases the risk of a crash.
- Remedy
- Dealers will replace the rearview camera, free of charge. Owner notification letters were mailed January 14, 2025. Owners may contact Hyundai customer service at 1‑855‑371‑9460. Hyundai's number for this recall is 271.
Recall number 24V879000 · Recall details
Trailer hitches
- What is wrong
- Hyundai Motor America (Hyundai) is recalling certain 2019-2023 Santa Fe, 2021-2023 Santa Fe HEV, 2022-2023 Santa Fe Plug-in HEV and Santa Cruz vehicles potentially equipped with a tow hitch harness installed as original equipment, or purchased as an accessory through a Hyundai dealership. Water accumulation on the tow hitch harness module printed circuit board (PCB) may cause an electrical short, which can result in a fire.
- Risk
- A fire while parked or driving can increase the risk of injury.
- Remedy
- Owners are advised to park their vehicles outside and away from structures until the remedy is completed. Dealers will install a new fuse and wire extension kit as necessary, free of charge. Owner notification letters were mailed starting May 16, 2023. Owners may contact Hyundai customer service at 1‑855‑371‑9460. Hyundai's number for this recall is 244. This recall is an expansion of previous recall number 22V‑633.
Recall number 23V181000 · Recall details
Power train: automatic transmission
- What is wrong
- Hyundai Motor Company (Hyundai) is recalling certain 2021-2022 Santa Fe, Sonata, Veloster N, 2022 Santa Cruz, Elantra N, and Kona N vehicles. The vehicle's "fail-safe" limited-mobility drive mode may be impaired, when prompted by a transmission oil pump malfunction, which can result in a complete loss of drive power.
- Risk
- Loss of drive power increases the risk of a crash.
- Remedy
- Dealers will inspect and replace the transmission, as necessary. Dealers will also update the transmission control unit software. All repairs will be performed free of charge. Owner notification letters were mailed January 10, 2023. Owners may contact Hyundai customer service at 1‑855‑371‑9460. Hyundai's number for this recall is 236.
Recall number 22V746000 · Recall details
Visibility: windshield
- What is wrong
- Hyundai Motor America (Hyundai) is recalling certain 2020-2021 Santa Fe, 2021 Sonata, and Elantra vehicles. During manufacturing, the windshield may not have been properly bonded to the vehicle, allowing it to detach in a crash.
- Risk
- A windshield that detaches from a vehicle during a crash can increase the risk of injury.
- Remedy
- Dealers will remove and reinstall the front windshield panel, free of charge. Owner notification letters were mailed June 20, 2022. Owners may contact Hyundai customer service at 1‑855‑371‑9460. Hyundai's number for this recall is 216.
Recall number 21V00M000 · Recall details
Fuel system, gasoline: delivery: hoses, lines/piping, and fittings
- What is wrong
- Hyundai Motor America (Hyundai) is recalling certain 2021-2022 Santa Fe and Sonata vehicles equipped with 2.5L turbocharged engines. Fuel may leak at the pipe connection between the high-pressure fuel pump and fuel rail.
- Risk
- A fuel leak increases the risk of a fire.
- Remedy
- Dealers will inspect and tighten, or replace the fuel pipe as necessary, free of charge. Owner notification letters were mailed on September 3, 2021. Owners may contact Hyundai customer service at 1‑855‑371‑9460. Hyundai's number for this recall is 207.
Recall number 21V524000 · Recall details
Fuel system, gasoline: delivery: hoses, lines/piping, and fittings
- What is wrong
- Hyundai Motor America (Hyundai) is recalling certain 2021 Santa Fe vehicles equipped with 2.5-litre Turbo engines. The fuel pipe connecting the high pressure fuel pump to the fuel rail may not have been tightened properly.
- Risk
- An insufficiently tightened fuel pipe may leak fuel, increasing the risk of a fire.
- Remedy
- Dealers inspected and tightened the fuel pipe connection, free of charge. The affected vehicles have been repaired and therefore no owner notification letters will be sent. Owners may contact Hyundai customer service at 1‑855‑371‑9460. Hyundai's number for this recall is 206.
Recall number 21V308000 · Recall details
Air bags: sensor: occupant classification: front passenger
- What is wrong
- Hyundai Motor America (Hyundai) is recalling certain 2021 Santa Fe vehicles. The Occupant Detection System (ODS) module may not deactivate the air bag upon detection of a child restraint system in the front passenger seat. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection."
- Risk
- In the event of a crash, deployment of the front passenger air bag, with a child in that seat, can increase the risk of injury to the child.
- Remedy
- Hyundai will notify owners, and dealers will replace the ODS module, free of charge. All affected vehicles have been remedied as of May 12, 2021. Owners may contact Hyundai customer service at 1‑855‑371‑9460. Hyundai's number for this recall is 202.
Recall number 21V185000 · Recall details
See all 7 recalls for the 2021 Hyundai Santa Fe
Defect investigations
Loss of Motive Power
the federal safety agency received a letter dated July 13, 2022, petitioning the Agency to initiate a safety defect investigation into loss of motive power allegations attributed to oil drain pan assembly failures on certain Hyundai Motor America, Inc. and Kia America, Inc. vehicles spanning Model Years (MY) 2005-2021. The Petitioners cited examples of complaints indicating that the subject vehicles were experiencing rapid loss of engine oil due to oil drain plug back outs, resulting in loss of motive power and/or catastrophic engine damage. Additional complaints were provided which alleged that the oil drain pans lack sufficient structural integrity and are susceptible to cracking. The petition itself can be reviewed at under ODI number 11481745. On September 12, 2022, the Office of Defects Investigation (ODI) opened Defect Petition (DP22-003) to evaluate the Petitionersâ request. The Petitioners have provided additional complaints within four supplemental letters dated January 31, 2023, March 21, 2023, May 23, 2023, and August 4, 2023. ODIâs evaluation included the review and analysis of the complaints and supporting information submitted by the Petitioners, as well as additional complaints submitted directly to the federal safety agency which referenced either the oil drain plug or a crack in the oil pan. After reviewing the available data, ODI has not identified evidence that would support opening a defect investigation into the oil drain pan assemblies of the subject vehicles. Based on a review of the available information, a loss of motive power resulting from an oil drain plug back out has not occurred between the initial sale of a vehicle and the completion of its first oil change. If during an oil change service, a technician fails to remove the existing drain plug gasket before installing a new gasket, it is likely that a proper seal between the drain plug and the oil pan will not be made. An improper seal between the drain plug and oil pan could lead to the backing out on the drain plug, resulting in the sudden loss of oil while driving. Additionally, the provided examples of oil pan cracks were localized to the immediate vicinity of the oil drain plug and/or appeared to be the result of direct-contact with a tool during servicing. Â There is no information to support that a vehicle-based defect exists relating to the oil pan assembly, and instead the documented incidents are related to the failure to follow the proper maintenance procedures during oil change service. In October 2023, Hyundai published a Technical Service Bulletin (TSB) that provided detailed instructions for oil change service on its gasoline powered vehicles, specifically highlighting the need to remove and replace the existing drain plug gasket prior to reinstalling the drain plug. After a thorough review of the material submitted by the petitioner, the information already in the federal safety agency's possession, and the potential risks to motor vehicle safety implicated by the petitioners' allegations, the federal safety agency does not believe that a formal investigation is warranted. Therefore, the petition is denied. A Federal Register Notice (FRN) further detailing the federal safety agencyâs reasons for denial of the petition will be published. The reference numbers for the complaints to the federal safety agency cited by the petitioner can be found in the petition submission documents in the public file for DP22-003. To review those complaints and the additional complaints ODI added to its evaluation which are cited in the Closing Resume ODI Report Identification Number document, go to
DP22003
Technical service bulletins for the 2021 Hyundai Santa Fe 104
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Inoperable horn that may be caused by foreign substances causing internal parts to oxidize
- Inoperable horn that may be caused by foreign substances causing internal parts to oxidize
- This bulletin provides information related to the navigation and head unit software changes introduced in...
- Some Hyundai vehicles may be equipped with a parking distance warning (PDW) sensor(s) that may trigger...
- Higher-than-expected engine oil consumption
- Higher-than-expected engine oil consumption
- This bulletin provides information related to a Transmission Control Unit (TCU) software update for some...
- Difficulty starting in cold weather
- The federal safety agency has issued an urgent safety advisory regarding dangerous, counterfeit...
- The federal safety agency has identified the presence of substandard and dangerous driver’s-side airbag...
2021 Hyundai Santa Fe fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 1.6L 4‑cyl Hybrid | AWD | 36 | 31 | 34 |
| 2.5L 4‑cyl | FWD | 22-25 | 28 | 25-26 |
| 2.5L 4‑cyl | AWD | 21-22 | 25-28 | 24 |
What 2021 Hyundai Santa Fe owners say
Most recent owner complaints, unedited.
My 2021 Hyundai Santa Fe SE (VIN: [XXX]), with approximately 93,000 miles, has repeatedly experienced a dangerous loss of acceleration while driving at highway speeds of approximately 60 mph. When I press the gas pedal, the vehicle fails to accelerate, making it difficult to merge, pass, or respond safely to traffic. The vehicle does not suddenly slow down, but it will not increase speed when needed. This creates a serious safety risk to me and other motorists. The problem occurs without a check-engine light or advance warning. I have noticed abnormal behavior involving the Idle Stop & Go “A” indicator, which changes between orange and white. Coconut Creek Hyundai, an authorized Hyundai dealership, has inspected the vehicle multiple times. The dealership initially replaced the battery, then diagnosed and replaced the high-pressure fuel pump. The pump was replaced a second time due to a reported issue with the replacement. Software updates or resets were also performed. Despite these repairs, the original acceleration problem continued. The dealership has now diagnosed all four fuel injectors as severely clogged or defective and recommends replacing them. The service advisor stated in writing that the high-pressure fuel pump failure caused the injectors to fail. However, the dealership has not explained why this damage was not identified during earlier repairs or provided assurance that replacing the injectors will resolve the acceleration problem. Hyundai Motor America has been contacted regarding the repairs. The vehicle and dealership service records are available for inspection upon request. Availability of previously removed parts must be confirmed with the dealership. I request that the federal safety agency investigate this recurring highway acceleration failure as a potential vehicle safety defect. Multiple repair attempts have failed to resolve a condition that could result in a serious accident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The contact owns a 2021 Hyundai Santa Fe. The contact stated that while in reverse(R), the rear-view camera displayed a distorted pixelated image on the screen. The dealer and the manufacturer were notified of the failure and stated that there were no recalls associated with the VIN. Upon investigation, the contact discovered the federal safety agency Campaign Number: 24V879000 (Back Over Prevention); however, the VIN was not included in the recall. The failure mileage was approximately 40,000.
On September 20, 2026, my 2021 Hyundai Santa Fe Calligraphy suffered sluggish acceleration while operating on a public roadway due to an internal dual-clutch transmission (DCT) failure. The Malfunction indicator light illuminated, and a diagnostic scan revealed stored history code P1C2D03, indicating a total breakdown of the high-pressure electric pump assembly. As of September 21, 2026 the vehicle is currently grounded at an authorized Hyundai dealership under an approved factory warranty repair Prior Authorization (PA) request. However the dealership has issued a written admission of "NO ETA" because the replacement transmission components are on an indefinite national backordered and are no longer being manufactured . Because the vehicle cannot be repaired in a reasonable timeframe due to a severe factory design defect , it remains unresolved.
The contact owned a 2021 Hyundai Santa Fe. The contact stated that while his wife was driving 50 MPH, the vehicle unexpectedly caught on fire. The contact's wife became aware that the radio was inoperable before the failure. Additionally, the contact’s wife’s eyes were irritated, and there was a hot, harsh odor which grew stronger very quickly. The odor was inside the vehicle. The contact stated that the smoke was black, and flames started shooting out from under the hood to consume the vehicle. The vehicle was a total loss. The fire was extinguished by the Murphysboro Fire Department. The Fire Department was unable to determine where the fire had started. There was a Police report filed. The vehicle was towed to an impound lot. The failure mileage was approximately 58,000.
The door to the gas tank is a push door which is temperamental. I can be at the pump and push the door to pop it open and it won't. I'm at the point where I have to pop my gas tank open before I even get to the gas station because to pull up to the pump and not be able to put gas in the tank is a waste of time. There is no lever to flip along side the driver seat because it is a push to open door.. it is available for inspection, however, it is temperamental. I will video it so I have proof as it works and it doesn't work. It has not been inspected by anyone only because if it is a defect in the motor for the door, I want Hyundai to recall it. I have gone on YouTube to see if there are remedies and yes, there are videos on how to open the door in case you cannot push it open. I cannot do this because I'm not ruining the back of my car as there is no compartment to open as shown in the YT video. I am not one to let my tank get down to less than 1/2 tank, especially not now. But why am I worrying about popping the door open when I'm not even at the gas station yet??
My rear back up camera intermitting stops working. I can shift into reverse sometimes and the camera does not come on at all, other times the screen blinks and other times the screen has green lines and glitchy lines. The camera will also come on while I'm DRIVING forward
When i select (R) reverse my camera does not come on. It started as just a flashing screen, but does not come on. It has come on momentarily while I am (D)driving. it has flashed a green screen before.
Fuel door mechanism stops working leaving you unable to add fuel. Is a constant complaint in 2021 Hyundai Santa Fe vehicles. My vehicle's door mechanism as stopped working 53,000 miles as well.
The windshield wipers intermittently stop working. This has been occurring for 2 years and the 5dealership cannot find an issue because they always work when the car is in for service. They also now want to charge a diagnostic fee each time it's in since the car is no longer under warranty
Compare the 2021 Hyundai Santa Fe
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Other model years
20012002200320042005200620072008200920102011201220132014201520162017201820192020202120222023202420252026
Questions about the 2021 Hyundai Santa Fe
Is the 2021 Hyundai Santa Fe reliable?
Owners have filed 170 complaints about the 2021 Hyundai Santa Fe, fewer than a typical Santa Fe model year.
What is the 2021 Hyundai Santa Fe year score?
The 2021 Hyundai Santa Fe scores 76 out of 100 (average). The score compares it with the other model years of the Hyundai Santa Fe: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2021 Hyundai Santa Fe?
Transmission and drivetrain, with 51 complaints, typically around 18,500 miles. Next is engine (38).
How many recalls does the 2021 Hyundai Santa Fe have?
7 recalls, covering back over prevention, trailer hitches and power train.
Was there a recall on the 2021 Hyundai Santa Fe transmission?
Yes, 1 recall: 22V746000. Check your VIN to see if your car still needs the free repair.
What year does the Hyundai Santa Fe have bad transmission?
The Hyundai Santa Fe model years with the most transmission complaints are 2017 (166 complaints), 2010 (109 complaints) and 2022 (57 complaints).
What gas mileage does the 2021 Hyundai Santa Fe get?
Official estimates for the 2021 Hyundai Santa Fe range from 24 to 34 mpg combined. The most efficient version (1.6L 4-cyl hybrid, AWD) gets 36 city and 31 highway.
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