2021 Hyundai Sonata Hybrid engine problems
The 2021 Hyundai Sonata Hybrid has 23 engine complaints filed with NHTSA — 33% of the year's total, and up sharply from the prior model year.
23
Engine complaints
33%
Share of year
0
Crash-involved
0
Related recalls
Engine complaints by year
What owners report
“Antifreeze is coming out of the exhaust. Heater is only blowing cold air. Repair shop said it is a common problem with the Hyundai hybrids. Was told I had to take it back to the dealership. The y repair shop said this is very common and is wondering why a recall has not been issued by the NTHSB.…”
Common questions
How many engine complaints does the 2021 Hyundai Sonata Hybrid have?
NHTSA has 23 complaints about the 2021 Hyundai Sonata Hybrid engine — 33% of all complaints filed for that model year.
Related
Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.
Compiled by Sharon Ben-Moshe, Founder.