Vehicle Data Hub

2020 Hyundai Sonata problems

Owners have filed 281 complaints with NHTSA about the 2020 Hyundai Sonata. Fuel system is the most reported problem area, at 21% of complaints. Next are electrical system (14%) and engine (11%).

At a glance

Complaints
281 filed with NHTSA
Most reported
Fuel system 21% of complaints
Crashes and fires
11 and 3
Injuries and deaths
7 and 0
Typical mileage
9,000 miles 72 complaints with mileage

Source: NHTSA owner complaints

Where the complaints are

Share of this model year's complaints by the part of the car involved. One complaint can name more than one part, so the shares can add up to more than 100%.

When problems show up

Complaints by mileage, 2020 Hyundai Sonata Complaints by odometer reading in 20,000-mile steps. The median is about 9,000 miles. 0k to 20k miles: 46 complaints 20k to 40k miles: 3 complaints 40k to 60k miles: 8 complaints 60k to 80k miles: 2 complaints 80k to 100k miles: 9 complaints 100k to 120k miles: 3 complaints 120k to 140k miles: 1 complaints 140k to 160k miles: 0 complaints 160k to 180k miles: 0 complaints 180k to 200k miles: 0 complaints 200k+ miles: 0 complaints 040k80k120k160k200k miles Typical: 9,000 miles
Based on 72 complaints that include mileage. 79% 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 miles46
20k to 40k miles3
40k to 60k miles8
60k to 80k miles2
80k to 100k miles9
100k to 120k miles3
120k to 140k miles1
140k to 160k miles0
160k to 180k miles0
180k to 200k miles0
200k+ miles0

What the data shows

Of the 72 complaints that include odometer readings, half describe a problem before roughly 9,000 miles. For fuel system specifically, the median reported mileage is about 79,000 miles (12 complaints with mileage).

Safety-related details: 11 complaints mention a crash; 3 complaints mention a fire; 7 injuries reported.

Looking only at complaints filed within five years of the model year (so older and newer years are comparable), the 2020 ranks 14th most-complained-about out of 34 model years of the Hyundai Sonata with enough data (232 complaints in that window). It is also covered by 4 safety recall campaigns.

What owners wrote

A few complaints as filed, shortened and with personal details removed. The first ones are among the most serious reports for this model year; the rest are typical.

It was smoking from the engine, I immediately stopped the vehicle. My safety was put at risk immediately while being in the vehicle when the air bags deployed hitting me in the face and causing my face to swell. The safety of others was put at risk due to others being right next to me and putting others at risk of engine blowing up. Yes, the vehicle has been inspected by police. There were no warning signs on the vehicle.

February 2026 FireInjury

Tl* the contact owns a 2020 hyundai sonata. The contact stated that while driving at various speeds, the doors opened independently without the unlock button being depressed. The vehicle was taken to wallace hyundai located at (3801 se federal hwy a, stuart, fl 34997) however, the mechanic was unable to determine the cause of failure. The vehicle was not repaired. The manufacturer was informed of the failure. The approximate failure mileage was 600.

Reported at 600 miles, February 2020

The contact owns a 2020 Hyundai Sonata. The contact stated while driving at various speeds, the vehicle experienced phantom braking and nearly came to a complete stop. The contact stated that the automatic emergency braking system unexpectedly engaged while there were no roadway obstacles or vehicles near the vehicle. The vehicle was taken to the dealer, who informed the contact that they would need to verify whether the repair would be covered under the active warranty.

Reported at 2,000 miles, May 2022

Other model years of the Sonata

Best and worst years for the Hyundai Sonata