Complaint volume
115 consumer-submitted complaints are matched to this model year. Treat the count as a research signal, then read the actual summaries for repeated symptoms.
Complaint records
2021 Hyundai Sonata Complaints
115 consumer-submitted complaints on record for the 2021 Hyundai Sonata, grouped by component category.
115 Total complaints
7 Crash reports
0 Fire reports
2 Injury reports
Complaint data reflects consumer-submitted reports. A complaint is not proof
of a defect, recall, or manufacturer fault. Enriched severity fields come
from official bulk records when the complaint can be matched by ODI number.
Buyer interpretation
How to use these complaints before buying
Complaint records are most useful when they turn into inspection points, seller questions, and comparison checks against nearby model years.
Pattern to inspect
The most common categories are unknown or other, power train, engine. Use those categories as a test-drive checklist instead of judging the vehicle from the total count alone.
Severity flags
Enriched records include 7 crash reports, 0 fire reports, 2 injury reports, and 0 fatality reports. These fields come from complaint records and should be read in context.
Mileage clue
Mileage is available on 20 complaints, with an average reported failure mileage of 42,019 miles. Compare that with the mileage on the listing.
Questions to ask the seller
- Have you had any problems related to unknown or other, power train, engine?
- Can I see recent maintenance and repair records?
- Has the vehicle ever been towed, involved in a crash, or repaired for the same issue twice?
- Can we also check the recall record for this 2021 Hyundai Sonata?
Used-car checklist
Use these complaints before the test drive.
Build a buyer checklist to turn these issues into questions and inspection points.
2021 Hyundai Sonata
Build buyer checklist Compare with other years Sends year, make, and model to pre-fill your checklist.
How severe are the 2021 Hyundai Sonata complaints?
7 Crash
0 Fire
2 Injury
0 Fatality
5 Towed
1 Medical attention
What are the most common 2021 Hyundai Sonata complaint categories?
UNKNOWN OR OTHER 20
POWER TRAIN 12
ENGINE 10
ELECTRICAL SYSTEM 9
FUEL SYSTEM, GASOLINE 7
ENGINE,FUEL/PROPULSION SYSTEM 4
FUEL/PROPULSION SYSTEM 4
POWER TRAIN,ENGINE 4
VISIBILITY/WIPER 4
ELECTRICAL SYSTEM,ENGINE 3
115 total complaints on record
Latest complaints
| Date | Component | Summary | Severity | Mileage |
|---|---|---|---|---|
| May 2022 | VISIBILITY | The contact owns a 2021 Hyundai Sonata. The contact received notification of NHTSA Campaign Number: 21V00M000 (Visibility) however, the part to do the recall repair was unavailable. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact had not experienced a failure. VIN tool confirms parts not available. | Crash: No Fire: No | Unknown |
| Apr 2022 | UNKNOWN OR OTHER | We received a letter back in Dec 2021 about a recall for our windshield that Hyundai was aware of but there was no fix available. It states that if in a crash it could be real bad because the adhesive on the windshield. However i don't think it should take almost 5 months for a serious recall like this. | Crash: No Fire: No | Unknown |
| Mar 2022 | AIR BAGS | 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. The car only suffered cosmetic damage thankfully, but the air bags did not deploy. I have since then found out that the front air bag crash sensors are in a spot where they are practically useless unless you hit something pretty high up and destroy the headlights in the process. In my opinion, this is a serious safety issue, and when I contacted Hyundai about it, all they told me was to go to the dealership for inspection. I have pictures showing that the crash sensors are located at and not where they should be, and if you open the hood, the wiring for the sensors is right in your face. I still have high anxiety knowing that if I get into another accident, they may not deploy due to their location. At least the car is still drivable and no structural damage or alignment issues are there. As you can see in the pictures the sensors are close to where the hood closes at the top support bar. | Crash: Yes Fire: No | Unknown |
| Jan 2022 | VISIBILITY/WIPER | Recall on my vehicle states there is still no remedy after one month. | Crash: No Fire: No | Unknown |
| Jan 2022 | UNKNOWN OR OTHER | I have had my 2021 Hyundai Sonata LES for less than a year and am already having problems with the front windshield. There is “air nose” coming through the windshield when I drive above 55 MPH. There has been recalls for this problem on some 2020-2021 Hyundai vehicles. The 2021 Sonata is one of them. However, when I look up to see if there is any recalls with my VIN number, it shows no recalls. I know my windshield is defective or wasn’t properly installed. | Crash: No Fire: No | Unknown |
| Jan 2022 | UNKNOWN OR OTHER | Hello The car shut off on the freeway while driving. The display lit up light a Xmas tree including the forward collision warning. I though this was an isolated incident. It has happened now numerous times. The car even braked on its own then shut off while turning in the middle of a busy intersection. There are several reports of very similar symptoms on Edmonds under reviews. This car is dangerous. I have contacted Hyundai twice now. | Crash: No Fire: No | Unknown |
| Dec 2021 | VISIBILITY | 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 horizontally across his windshield. He stated that the crack had obstructed his vision while driving at various speeds. The dealer was initially notified of the failure and informed him that he had to have the vehicle repaired by a recommended third party. The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was 23,000. | Crash: No Fire: No | 23,000 |
| Dec 2021 | ENGINE | The contact owns a 2021 Hyundai Sonata. The contact stated that while the vehicle was at an independent mechanic for an oil change, the mechanic diagnosed the vehicle with transmission fluid leaking from the engine. The mechanic informed the contact that the transmission fluid leakage was flammable. The dealer was made aware of the failure but informed the contact that they were backed up with other vehicles and could not diagnose the vehicle for approximately three weeks. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was 5,600. | Crash: No Fire: No | 5,600 |
| Oct 2021 | VISIBILITY/WIPER | 2021 Sonata N LINE NOT EQUIPPED WITH AUTO WIPERS WIPERS INTERMITTENTLY COME ON BY ITSELF WHILE DRIVING. IT HAS COME ON MULTIPLE TIMES WHEN USING MY TURN SIGNAL. WIPES ONCE THEN GOES OFF. HAS ALSO COME ON ONCE WITHOUT THE USE OF THE TURN SIGNAL. SWIPED 3 TO 4 TIMES AND THEN WENT OFF | Crash: No Fire: No | Unknown |
| Oct 2021 | UNKNOWN OR OTHER | On August 23rd, 2021, I was on a business trip between High Point, NC and Greenville, SC. I was operating my own vehicle as the mode of transport. Upon arrival in Greenville, the car began behaving strangely. The transmission was not shifting at typical intervals, at times racing the engine at low speeds. After restarting the vehicle, there was a brief return to normal. Then the vehicle reported a "Check Engine" light and the transmission stopped functioning entirely. Due to capacity issues, I was unable to utilize a local dealership. I used AAA to tow the vehicle to Fort Mill Hyundai in Fort Mill, SC, where it remains to this day. The vehicle threw a P0868 code, which is supposedly a generic error relating to an electrical problem in the transmission. | Crash: No Fire: No | Unknown |
| Oct 2021 | AIR BAGS,SEATS | WE LEASE A 2021 SONATA SEL EQUIPPED WITH AIR BAG SYSTEM FEATURING AN OCS IN THE RIGHT FRONT SEAT. THE PURPOSE OF THE OCS IS TO DISABLE RIGHT PASSENGER SEAT FRONT AIR BAG WHEN IT DETECTS TA CHILD RESTRAINT SYSTEM OR SMALL CHILD IN THE RIGHT FRONT SEAT. RIGHT FRONT AIR BAG IS DISABLED TO PREVENT INJURIES TO A CHILD FROM A RIGHT FRONT AIR BAG INFLATION DURING A CRASH. MY WIFE IS ABOUT 4'10" TALL AND WEIGHS 135#. WHEN SEATED IN PASSENGER SEAT, SHE REQUIRES A CUSHION TO RAISE HER SO SHE CAN SEE OVER DASHBOARD AND OUT SIDE WINDOW. OUR SONATA IS EQUIPPED WITH MANUAL PASSENGER SEAT THAT IS RAISED TO HIGHEST POSITION. PROBLEM IS THAT WHEN SHE USES CUSHION, THE OCS LIGHT STAYS ON INDICATING THAT AIR BAGS ARE DEACTIVATED AND WOULD NOT DEPLOY IN AN ACCIDENT WHICH COULD CAUSE AN EXTREME SAFETY HAZARD TO MY WIFE. WE TOOK CAR TO DEALER SERVICE CENTER TWICE, AND WE CALLED HYUNDAI USA CUSTOMER SERVICE - BOTH SAID NOTHING COULD BE DONE. SMALL ADULTS LIKE MY WIFE SHOULD BE ABLE TO BYPASS THE OCS USING A SHUNT OR BYPASS SWITCH. WE FEED THIS IS A SERIOUS SAFETY HAZARD. EARLIER SONATA MODELS WERE RECALLED FOR THIS ISSUE. | Crash: No Fire: No | Unknown |
| Jul 2021 | PARKING BRAKE,UNKNOWN OR OTHER | The contact owns a 2021 Hyundai Sonata. The contact stated that after driving out of the garage and parking in the driveway with the engine idling and remote smart parking assist feature activated, 6 minutes later the vehicle suddenly began to slowly roll forward into the garage area making contact with a second vehicle that was parked in the garage before crashing into the back of the garage wall and stopping. During the incident, no injuries were reported, and no police report was filed. The vehicle was taken to the local dealer who was unable the duplicate the failure. The manufacturer was also notified of the failure. The approximate failure mileage was 1,400. | Crash: Yes Fire: No | 1,400 |
| Jun 2021 | UNKNOWN OR OTHER | Excessive wind noise is coming from the driver side window when speeds are over 55mph+. A lot of other owners on the forums are experiencing the same problem. | Crash: No Fire: No | Unknown |
| Apr 2021 | UNKNOWN OR OTHER | SEEMS TO BE AN ISSUE WITH THE WIRELESS APPLE CAR PLAY. REGARDLESS IF THE VEHICLE IS IN MOTION OR NOT IT LOSES CONNECTIVITY. WHILE DRIVING THIS CAUSE YOU TO TAKE YOUR EYES OFF THE ROAD AS MESSAGES APPEAR ON THEIR INFOTAINMENT SYSTEM. CALLS ARE DROPPED, NAVIGATION STOPS SO WHILE YOU ARE LOOKING AT THE MESSAGES YOU'RE NOT PAYING ATTENTION TO THE ROAD. APPLE IS AWARE BUT HAS NOT RESOLVED IT. HYUNDAI IS AWARE BUT HAVE NOT RESOLVED IT. THE INTERNET IS LOADED WITH ISSUES FOR THIS SITUATION. NOT SURE IF THIS IS SOMETHING YOU CAN ASSIST WITH BUT I'M ASSUMING AT SOME POINT THEIR WILL BE ACCIDENTS BECAUSE WHEN THIS HAPPENS YOU CAN'T USE THE HANDS FREE OPTION AS IT ALSO STOPS WORKING. | Crash: No Fire: No | Unknown |
| Mar 2021 | VISIBILITY/WIPER | PANORAMIC SUNROOF EXPLOSION. HAPPENED ON OPEN HIGHWAY ROAD WITH NO CAR IN NEAR VICINITY OR SIGN OF ANY KIND OF DEBRIS HITTING THE VEHICLE. | Crash: No Fire: No | 5,836 |