Vehicle Data Hub

2021 Hyundai Sonata fuel system problems

34 complaints about fuel system have been filed for the 2021 Hyundai Sonata, which is 18% of all its NHTSA complaints. It is the 2nd most reported problem area for this model year.

At a glance

Complaints
34 18% of this year's complaints
Typical mileage
75,000 miles 10 complaints with mileage
Crashes and fires
1 and 0
Injuries and deaths
6 and 0

Source: NHTSA owner complaints

When fuel system problems show up

Fuel system complaints by mileage, 2021 Hyundai Sonata Complaints by odometer reading in 20,000-mile steps. The median is about 75,000 miles. 0k to 20k miles: 0 complaints 20k to 40k miles: 1 complaints 40k to 60k miles: 3 complaints 60k to 80k miles: 1 complaints 80k to 100k miles: 2 complaints 100k to 120k miles: 1 complaints 120k to 140k miles: 1 complaints 140k to 160k miles: 1 complaints 160k to 180k miles: 0 complaints 180k to 200k miles: 0 complaints 200k+ miles: 0 complaints 040k80k120k160k200k miles Typical: 75,000 miles
Based on 10 complaints that include mileage. 40% were reported before 60,000 miles. The amber marker shows the median: half of these complaints happened before that mileage.
View the numbers
MileageComplaints
0k to 20k miles0
20k to 40k miles1
40k to 60k miles3
60k to 80k miles1
80k to 100k miles2
100k to 120k miles1
120k to 140k miles1
140k to 160k miles1
160k to 180k miles0
180k to 200k miles0
200k+ miles0

What the data shows

Of the 10 fuel system complaints that report mileage, the median is about 75,000 miles, and 40% were reported before 60,000 miles.

These complaints mention 1 crash, 6 injuries.

What owners wrote

I bought this car in June 2013 for its safety and its Amazing warranty and all the features that it has Hyundai manufacture had an obligation as a consumer service and failed to send notification of any recalled to us in regards to a recall High pressure, fuel pump, and fuel rail Fuel system engine, gas tank This is a product of liability and negligence on time but they failed to take responsibility and comply with federal laws.

June 2025 Injury

The contact owns a 2021 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The vehicle was driven to the shoulder of the road. The contact stated that the fuel level indicated empty, and the low fuel warning light was illuminated. The passenger seated in the rear seat noticed that the rear seat was out of place and that the seat was very hot. The vehicle was refueled prior to the failure.

Reported at 130,000 miles, March 2026

Other problems reported for the 2021 Hyundai Sonata

Fuel system problems in other years

Fuel system problems across all Hyundai models