2020 Hyundai Sonata Other or unknown Problems
- Complaints
- 30about this part
- Share
- 16%of 182 total for the year
- Median mileage
- 520miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 30 complaints about the other or unknown of the 2020 Hyundai Sonata, 16% of the 182 complaints for this model year. Where a mileage was given, the median is 520 miles. 2 of these say a crash was involved, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“When it rains water gets inside the doors while parked. Especially the back doors. If it rains hard a cup full of water will come out the door upon opening. I've been told it's a design flaw. I've had it looked at twice and it's still not fixed. Customer service can't have someone come out and look and it because of the virus, so there's nothing that they can do.”
NHTSA complaint #11322889, filed 2020-04, 200 miles“Engine block became infested with rats/mice overnight. I believe this was the result of soy-based components used by Hyundai. No other cars on my block had this problem (I was able to survey the vehicle owners because we all were there waiting for street cleaning to occur.) it seems obvious that the rats/mice were attracted by the materials used by Hyundai and anecdotal reports suggest this is a chronic problem among many car manufacturers, but especially ones that use soy based components such as Hyundai, land rover, and honda.”
NHTSA complaint #11360966, filed 2020-09, 9,998 miles“The vehicle's fuel gauge (type c) does not accurately adjust for changes in the amount of gas in a timely manner. It normally takes 2-3 days for the gauge to move to full tank even though it is full. Same problem from 1/4 to 1/2 tank, etc. For example, I noticed the panel said I had 11 miles to empty on friday. The gas gauge showed otherwise. I wasn't near my usual fill station, so I put 5 gallons of gas in the car. It is now wednesday (5 days later). The gas gauge moved slightly yesterday to almost 1/4 tank, but the fuel tank warning went from 11 to 0 miles left to empty (see attachment). …”
NHTSA complaint #11414356, filed 2021-04, 449 miles“The car while I'm driving sometimes the car is unstable also when I turn on the car and I prepare to put it on drive the car apply the emergency brakes by itself. The emergency brake light is on and there is no way to remove it, I have to turn the car on and off continually until finally the car removes the brakes. I was driving on the highway and on the street and while I was doing so the car put on the brakes by itself. One to two months ago I took the car to the dealer and I told them about it but they said that the care needs 2 updates, apparently the car has two recalls. …”
NHTSA complaint #11348898, filed 2020-08, 650 miles“Rear doors retain water every time it rains. When you open the rear doors water drains out of the car. Brought car to Hyundai dealership who verified the problem and confirmed the problem with other new cars on their lot, on april 21, 2020. Dealership contacted Hyundai corporate for guidance and there has been no response to date.”
NHTSA complaint #11326116, filed 2020-05, 520 milesOther or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 3 | 18% |
| 2024 | 9 | 19% |
| 2023 | 7 | 8% |
| 2022 | 10 | 11% |
| 2021 | 32 | 24% |
| 2020 | 30 | 16% |
| 2019 | 23 | 14% |
| 2018 | 59 | 16% |
| 2017 | 103 | 13% |
| 2016 | 92 | 13% |
| 2015 | 169 | 15% |
| 2014 | 85 | 11% |
| 2013 | 181 | 9% |
| 2012 | 125 | 8% |
| 2011 | 217 | 6% |
| 2010 | 37 | 11% |
| 2009 | 48 | 10% |
| 2008 | 21 | 5% |
| 2007 | 22 | 3% |
| 2006 | 32 | 3% |
| 2005 | 6 | 4% |
| 2004 | 12 | 6% |
| 2003 | 6 | 3% |
| 2002 | 14 | 4% |
| 2001 | 4 | 2% |
| 2000 | 3 | 1% |
| 1999 | 5 | 4% |
| 1998 | 2 | 4% |
| 1997 | 2 | 4% |
| 1996 | 1 | 4% |
| 1993 | 2 | 8% |
| 1991 | 2 | 7% |
| 1989 | 1 | 9% |
Other parts of the 2020 Hyundai Sonata
59 complaintsElectrical system
40 complaintsEngine
32 complaintsTransmission and drivetrain
24 complaintsBody and structure
17 complaintsSeats
16 complaintsForward collision avoidance
12 complaintsAir bags
7 complaintsSteering
7 complaintsVehicle speed control
7 complaintsVisibility (wipers, defrost, mirrors)
7 complaintsBack-over prevention (rear camera)
6 complaints
← All problems reported for the 2020 Hyundai Sonata
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology