2020 Hyundai Sonata Engine Problems

NHTSA component category: ENGINE · data through 09/08/2026

31Engine complaints

17.4%Of all 178 complaints

#3Most-reported category

Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.

How engine ranks on this vehicle

FUEL/PROPULSION SYSTEM45 · 25.3%

ELECTRICAL SYSTEM39 · 21.9%

ENGINE31 · 17.4%

Unspecified / other28 · 15.7%

POWER TRAIN24 · 13.5%

Share of the 178 complaints citing each category; one complaint can cite several. Full breakdown on the 2020 Hyundai Sonata overview page.

What owners report

“The contact owns a 2020 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, there was an abnormal gasoline odor inside the…”NHTSA complaint 11617260 — filed 09/30/2024

“The contact owns a 2020 Hyundai Sonata. The contact stated while driving at an undisclosed speed, there was an abnormal gasoline odor inside the vehicle…”NHTSA complaint 11606576 — filed 08/05/2024

“I was driving on the interstate when I heard a click from the back of the car. The gas gauge started to move downward as…”NHTSA complaint 11594051 — filed 06/12/2024

Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.

Engine complaints by year filed

Frequently asked questions

Does the 2020 Hyundai Sonata have engine problems?

Engine is the #3 most-reported problem area on the 2020 Hyundai Sonata: 31 of 178 complaints on file (17.4%). Complaints are unverified owner reports, not confirmed defects.

How many complaints does the 2020 Hyundai Sonata have in total?

178 complaints were on file with NHTSA as of 09/08/2026. Across all categories, 5 involved a crash, 1 involved a fire, 4 reported injuries, and none reported deaths.

What does NHTSA's engine category include?

NHTSA assigns each complaint to standard component categories; this page reports the ENGINE category exactly as NHTSA defines and records it.

About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 09/08/2026.