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Owner-Reported Problems · NHTSA

2021 Hyundai Sonata — Problems & Complaints

NHTSA has 134 owner complaints on file for this vehicle. Every report below was filed by a real owner with the US government's road-safety agency.

134
Complaints
filed with NHTSA
7
Involved a Crash
owner-reported
0
Involved Fire
owner-reported
13
Injuries
across all reports
Years to Avoid

Hyundai Sonata — Complaints by Model Year

Years flagged AVOID have at least twice this model's average complaint count — the strongest public-data signal of a bad year.

751 complaints

1,153 complaints

725 complaints

765 complaints

374 complaints

162 complaints

180 complaints

134 complaints

94 complaints

87 complaints

46 complaints

17 complaints

0 complaints

Problem Areas

What Owners Complain About Most

Engine 34 reports
Unknown Or Other 32 reports
Power Train 25 reports
Fuel/propulsion System 21 reports
Electrical System 17 reports
Fuel System 13 reports
Gasoline 13 reports
Forward Collision Avoidance 9 reports
In Their Own Words

Recent Owner Reports

Fuel/propulsion System ODI 11707812 12/30/2025

Recall number (25V796000) There is No remedy available. I am Experiencing fuel system issues that may relate. Dealer and corporate refusing meaningful support and expecting me to pay $1,600 to replace fuel assembly. I feel unsafe driving my vehicle at this time.

Power Train ODI 11707864 12/30/2025

I own a 2021 Hyundai Sonata 1.6T, which has an open NHTSA safety recall (25V796000) related to fuel tank pressurization and fire risk. I brought the vehicle to an authorized Hyundai dealership due to a check engine light, reduced performance, and DTC P14EE, which aligns with the recall condition. The dealership refused to treat the concern as recall-related unless I paid a di…

Unknown Or Other ODI 11707339 12/28/2025

NHTSA: #25V796000 Recall: #286 2020-23MY SONATA (DN8/DN8A) FUEL TANK Issued on 11/18/2025 and there is no remedy yet for this issue. Hyundai of Ocala has not issued me a loaner car. What am I supposed to do? It’s been over a month since the recall was posted and still no remedy. I’m concerned for mine and my families safety. This car is our only means of transportation. I need…

Visibility/wiper ODI 11499241 12/28/2022

*The front sunroof panel exploded toward while the car was running, but in the driveway in park. *Our safety was compromised by the shattered tempered glass falling into the car. *The problem was noted at the dealer, who stated they had not seen this happen before and believed it to be from a rock chip. *The roof has been inspected by the service department at the dealer, a…

Visibility ODI 11445226 12/28/2021

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. Over time, the ding spread from the driver’s side to the lane assist sensor located in the middle of the windshield. The contact stated that the crack spread vertically and h…

Same Vehicle

Recalls & Crash Tests

Complaints are one half of the picture — see the official recalls and NHTSA crash-test stars for the 2021 Hyundai Sonata, or check your exact car by VIN with the free VIN lookup.

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Problems Checker

Any year, make and model: open the Car Problems Checker. Data: NHTSA (US DOT, public domain), cached up to 7 days.

Questions

FAQ

Is the 2021 Hyundai Sonata reliable?
Owners have filed 134 safety complaints with NHTSA for the 2021 Hyundai Sonata, most often about engine. Compare the complaint counts across model years above — a year with far more complaints than the model's average is the strongest 'avoid' signal in public data.
Which Hyundai Sonata years should I avoid?
The rule of thumb used by analysts: a model year whose complaint count is well above the model's own average (we flag 2× or more) usually had a real manufacturing or design problem — not just noisy reporting. Use the year-by-year strip on this page.
Where do these complaints come from?
Directly from NHTSA, the US government road-safety agency. Any owner can file a Vehicle Owner Questionnaire; NHTSA publishes them as public domain data. We cache each lookup for up to 7 days.
Do complaints mean a recall is coming?
Sometimes. NHTSA opens defect investigations when complaint patterns emerge, and investigations can end in recalls. Check the recalls page for this vehicle to see what has already been recalled.