2021 Hyundai Sonata: raw data

Every record we hold for this vehicle, as plain tables, with nothing added. The consumer page shows the same records with the maintenance schedule, price ranges and nearby shops around them.

vehicle	2021 / hyundai / sonata
known issues	8 clusters (reviewed 2026-08-26)
complaints	131 on file (2021-03-26 → 2026-09-15)
recalls	4
investigations	1
fars	44 occupant deaths, crash years 2010-2024 (legacy-code)
indexed	yes
license	CC BY 4.0 (derived)

Known Issues clusters all years →

Fuel tank expansion under recall 25V796000FUEL SYSTEM, GASOLINE20 complaints2022-09 → 2026-08sonata-2021-fuel-tank-expansion-recall

11754791 The contact owns a 2021 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the fuel gauge indicated that the tank was half full
11753027 The contact owns a 2021 Hyundai Sonata. The contact received notification of NHTSA Campaign Number: 25V796000 (FUEL SYSTEM, GASOLINE); however, the part to do the recall repair was unavailable
11729119 I was notified of a recall on my from vehicle by Hyundai via email some time in March of 2026. The message said mentioned my vehicle may have a defective/worn purge control check valve that would cause the fuel tank to deform

Transmission failure and replacementPOWER TRAIN20 complaints2022-07 → 2026-06sonata-2021-transmission-failure

11741226 The vehicle has experienced repeated transmission and Electronic Oil Pump (EOP) failures resulting in loss of propulsion, loss of acceleration, and transmission-related malfunctions
11647714 My transmission on my 21 Hyundai sonata n line has failed. It began when the car needed to emergency brake when someone jump into my lane on the road
11488803 The contact owns a 2021 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the vehicle made abnormally loud sounds

Panoramic sunroof spontaneous shatteringSTRUCTURE9 complaints2021-03 → 2026-07sonata-2021-sunroof-shattering

11752333 The panoramic sunroof spontaneously exploded while driving without any external impact
11641851 Sunroof exploded on the highway with no one in-front of me to kick up any rocks or debris
11526475 I was driving down the highway with my mom, no cracks in any of my windows before any of this by the way

Windshield cracking and recall repair delaysVISIBILITY6 complaints2021-12 → 2025-08sonata-2021-windshield-cracking-recall

11445226 The contact owns a 2021 Hyundai Sonata. The contact stated that while traveling at highway speeds, a tiny pebble hit his windshield which caused a minor ding on the middle of the driver’s side windshield
11448202 I have had my 2021 Hyundai Sonata LES for less than a year and am already having problems with the front windshield
11678866 I am writing to formally file a complaint regarding Hyundai’s Recall Campaign 216, which involves a safety defect related to the windshield assemblies of certain Hyundai vehicles

Electrical system component failuresELECTRICAL SYSTEM9 complaints2023-07 → 2026-08sonata-2021-electrical-component-failures

11755451 The Left blinker switch keeps going in and out, working about 50% of the time
11612820 Fuse box has a defect causing the AC blower motor to intermittently not work
11534239 So for the past year and half my cars left turn signal has been working intermittently

Sudden loss of engine power while drivingPOWER TRAIN, ENGINE15 complaints2022-01 → 2026-08sonata-2021-loss-of-power-stalling

11754136 Going down the road driving the car lost power and went in limp mode with no warnings on the dash at all!
11546386 The contact owns a 2021 Hyundai Sonata. The contact stated while driving 45 MPH, the vehicle inadvertently lost motive power in the middle of the roadway and failed to restart
11642341 On 5 separate occasions the car has shut itself off while driving. After the first 2 times the car was taken to the dealership where they found nothing wrong and told us to replace the battery

Exhaust Heat Recovery System coolant leakENGINE6 complaints2026-02 → 2026-06sonata-2021-ehrs-coolant-leak

11730992 The Exhaust Heat Recovery System (EHRS) has failed for the second time on this vehicle
11727380 The internal core of the Exhaust Heat Recovery System (EHRS), part of the center muffler/front pipe assembly (#28600-L5210), suffered a catastrophic failure
11719316 The EHRS coolant system failed and had a leak causing the coolant to be excessively burned off as thick white smoke

Forward collision and automatic braking malfunctionSERVICE BRAKES, FORWARD COLLISION AVOIDANCE6 complaints2022-03 → 2025-08sonata-2021-fca-automatic-braking-malfunction

11679381 During a front end collision the car did not auto brake and the air bags did not deploy
11520558 Vehicle in front of me stopped. Six car lengths between us. I applied brakes, nothing, I even put my left foot on top of my right foot
11456267 I turned on a highway and had gotten my car up to 45 mph when a deer came out of nowhere and I slammed into it hard back on January 12th

NHTSA complaints (summary) all years →

count	earliest_date	latest_date	crash_flagged	fire_flagged	top_components
131	2021-03-26	2026-09-15	7	0	ENGINE:34; UNKNOWN OR OTHER:32; POWER TRAIN:24; FUEL/PROPULSION SYSTEM:20; ELECTRICAL SYSTEM:17

Recalls all years →

campaign_number	report_received_date	component	summary	consequence	remedy
21V524000	09/07/2021	FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS	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.	A fuel leak increases the risk of a fire.	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.
21V00M000	28/12/2021	VISIBILITY:WINDSHIELD	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.	A windshield that detaches from a vehicle during a crash can increase the risk of injury.	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.
22V746000	06/10/2022	POWER TRAIN:AUTOMATIC TRANSMISSION	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.	Loss of drive power increases the risk of a crash.	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.
25V796000	18/11/2025	FUEL SYSTEM, GASOLINE	Hyundai Motor America (Hyundai) is recalling certain 2020-2023 Sonata vehicles. A damaged check valve can allow air to enter the fuel tank, causing it to expand and contact hot exhaust components, melting the tank.	A melted fuel tank can leak, increasing the risk of a fire.	Dealers will inspect and replace the check valve. The fuel tank assembly will be inspected for damage and replaced if necessary. Additionally, dealers will inspect and update the engine control unit software. All repairs will be performed as necessary, free of charge. Owner notification letters were mailed beginning March 13, 2026. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 286. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on November 19, 2025.

Investigations all years →

action_number	status	subject	components	opened	closed	recall_campaign	summary
DP22003	closed	Loss of Motive Power	ENGINE	2022-09-12	2023-12-12	·	The National Highway Traffic Safety Administration (NHTSA) 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 complain

FARS occupant deaths all years →

crash_years	occupant_deaths	match_type	vpic_recovered
2010-2024	44	legacy-code	0

FARS counts every occupant death in a fatal crash, whatever the cause — it does not mean the vehicle was at fault or defective. Counts are not adjusted for how many of each vehicle are on the road.

Cite this

Derived data is CC BY 4.0. Link back to the page you used. Text and BibTeX below.

Wrench.Pro (2026). 2021 Hyundai Sonata vehicle data [dataset]. https://www.wrench.pro/data/vehicles/2021/hyundai/sonata

@misc{wrenchpro_2021_hyundai_sonata_2026,
  author = {Wrench.Pro},
  title = {Wrench.Pro vehicle data: 2021 Hyundai Sonata},
  year = {2026},
  howpublished = {\url{https://www.wrench.pro/data/vehicles/2021/hyundai/sonata}},
  note = {Derived from NHTSA public records. CC BY 4.0.}
}

hub · known-issues · methodology · license · research (interpretation)