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Fuel systemPart report

2020 Hyundai Sonata Fuel system Problems

Complaints
59about this part
Share
32%of 182 total for the year
Median mileage
77,524miles
Trend
RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.

NHTSA recorded 59 complaints about the fuel system of the 2020 Hyundai Sonata, 32% of the 182 complaints for this model year. Where a mileage was given, the median is 77,524 miles. 2 of these say a crash was involved and 1 a fire, according to the filers. 1 recall campaign on record is filed under a similar system.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“As the vehicle was at a complete stop and waiting for a chance to get in traffic, the car hestiated and would not respond to the depress of the gas pedal, for a second or two... Very strange indeed!....is it a transmission issue or something else....the transmission shifts strange from the complete stop position...this happenes more than once! And one instance it actually jerked ( bucked) somehow...concerned about this...”

NHTSA complaint #11376745, filed 2020-11, 1,600 miles

“A week before my gas tank expanding I heard a loud popping noise. When driving from NC to DC, my gas tank refused to take gas and my car immediately went to empty. I was stranding on the highway and has my 2020 Hyundai towed to the Hyundai dealership in Chesterfield, VA. They told me that my gas tank expanded and my back seats had popped out of place.”

NHTSA complaint #11597161, filed 2024-06

“On or about November 13, 2024 our Hyundai Sonata 2020 gas tank almost exploded. We drove our vehicle to a dealership so that it could be checked because we kept hearing something that sounded like a loud pop / thumb underneath our vehicle. We had already been receiving notifications of a powertrain issue with the vehicle for years (without the dealership resolving the issue). …”

NHTSA complaint #11651800, filed 2025-03

“Fuel tank has expanded to the point that my vehicle is deemed not safe to drive. As pressure in the tank is unable to be stabilized. Only had the car for about 70 days since the date of purchase. Repairs are about $3900. In short as told by the dealership service department, my car could blow up at any time. This is not safe, at all.”

NHTSA complaint #11607405, filed 2024-08

“Service Campaign 9B1 That my gas tank has explanded/exploded due to the issue noted in the subject line. As you can see the whole bottom of the backseats have been raised up imcluding the part that connects to the gas tank itself. My car is immobilized and not drivable during this time. What is the next step to take?”

NHTSA complaint #11651228, filed 2025-03

Related recalls

Related service bulletins

Fuel system: other model years

YearComplaintsShare of year
2025212%
202412%
20234450%
20222931%
20213425%
20205932%
2019127%
2018349%
2017334%
2016345%
2015867%
20148912%
201321111%
20121147%
20111334%
2010123%
2009235%
200861%
200791%
2006222%
200553%
200484%
2003189%
2002258%
200163%
200041%
199922%
19981020%
19971735%
199523%
199016%

Other parts of the 2020 Hyundai Sonata

Electrical system
40 complaints
Engine
32 complaints
Other or unknown
30 complaints
Transmission and drivetrain
24 complaints
Body and structure
17 complaints
Seats
16 complaints
Forward collision avoidance
12 complaints
Air bags
7 complaints
Steering
7 complaints
Vehicle speed control
7 complaints
Visibility (wipers, defrost, mirrors)
7 complaints
Back-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