2021 Hyundai Sonata Fuel/propulsion System Problems
NHTSA component category: FUEL/PROPULSION SYSTEM · data through 11/01/2026
Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
How fuel/propulsion system ranks on this vehicle
Share of the 135 complaints citing each category; one complaint can cite several. Full breakdown on the 2021 Hyundai Sonata overview page.
What owners report
“I was notified of a recall on my from vehicle by Hyundai via email some time in March of 2026. The message said mentioned my…”NHTSA complaint 11729119 — filed 04/03/2026
“I took my car to the dealer on [XXX] with concerns about the strong gas smell that I have been smelling. The Hyundai dealership kept…”NHTSA complaint 11712843 — filed 01/23/2026
“I own a 2021 Hyundai Sonata 1.6T, which has an open NHTSA safety recall (25V796000) related to fuel tank pressurization and fire risk. I brought…”NHTSA complaint 11707864 — filed 12/30/2025
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Fuel/propulsion System complaints by year filed
Frequently asked questions
Does the 2021 Hyundai Sonata have fuel/propulsion system problems?
Fuel/propulsion System is the #4 most-reported problem area on the 2021 Hyundai Sonata: 21 of 135 complaints on file (15.6%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2021 Hyundai Sonata have in total?
135 complaints were on file with NHTSA as of 11/01/2026. Across all categories, 7 involved a crash, 0 involved a fire, 13 reported injuries, and none reported deaths.
What does NHTSA's fuel/propulsion system category include?
NHTSA assigns each complaint to standard component categories; this page reports the FUEL/PROPULSION SYSTEM category exactly as NHTSA defines and records it.
