2021 Hyundai Sonata Hybrid
This year had at least 30% fewer complaints than this model's typical year.
This verdict reflects complaint volume compared to this model's typical year. Recalls and safety issues below apply regardless of the verdict — always check them.
- Complaints
- 53
- Recalls
- 0
- Investigations
- 1
- Top problem
- Electrical system
None on file
Opened by NHTSA
49% of complaints
Complaints per year
2021: 53 complaints
View as data table
| Year | Complaints |
|---|---|
| 2011 | 95 |
| 2012 | 155 |
| 2013 | 108 |
| 2014 | 28 |
| 2015 | 52 |
| 2016 | 132 |
| 2017 | 80 |
| 2018 | 9 |
| 2019 | 5 |
| 2020 | 16 |
| 2021 | 53 |
| 2022 | 19 |
| 2023 | 15 |
| 2024 | 9 |
| 2025 | 11 |
| 2026 | 2 |
Known problem areas
Percentages can add to more than 100% — a complaint can name more than one system.
Electrical system
49% · 26 reportsMost commonly citing 12v/24v/48v battery.
Show complaint excerpts
The vehicle experiences sudden, complete electrical power loss while driving at speed on highways and city streets or on the parking.
NHTSA ODI report, 2026-08-05
Also filed under Engine
My 2021 Sonata Hybrid Limited has been in the shop for over 3 months. At least 4 times while driving on city streets, I'd receive an error stating problem with hybrid system please turn off vehicle.
NHTSA ODI report, 2023-10-14
Engine
40% · 21 reportsShow complaint excerpts
Discovered that I had no engine heat to use in the cabin with cooler outside temps. Checked coolant tank. Was nearly bone dry. 2021 hybrid is under warranty with only 35K miles on it and regular scheduled maintenance.
NHTSA ODI report, 2023-10-03
Forward collision avoidance
9% · 5 reportsMost commonly citing automatic emergency braking and warnings.
Show complaint excerpts
The forward collision warning, automatic emergency braking and adaptive cruise control failed as the first 2 activated when there were no oncoming collisions in front of me and the nearest cars around me were 1/4 of a mile away.
NHTSA ODI report, 2023-02-22
Power train
6% · 3 reportsFuel/propulsion system
6% · 3 reportsShow complaint excerpts
Battery keeps dying randomly. Approximately once every other week and I drive 12k miles a year⦠dealership reassures me itâs find. Found numerous reports of other Sonota Hybrid users experiencing a similar issue.
NHTSA ODI report, 2023-10-12
Safety timeline
No recalls on file for this model year.
0 recalls · 1 investigation · oldest first
To check one car, enter its VIN on the NHTSA recall page. Check a VIN →
-
I
2023-01-27Defect petitionClosed 2023-08-07 Pedestrian alert sounds
Buy-smart checklist
2021 Hyundai Sonata Hybrid — pre-purchase inspection
Inspect
- Electrical system: 26 reports on file for this year.
- Engine: 21 reports on file for this year.
- Forward collision avoidance: 5 reports on file for this year.
Other years of this model
See all years ranked →FAQ
- Is the 2021 Hyundai Sonata Hybrid reliable?
- Based on NHTSA complaint volume compared to this model's typical year, the 2021 Hyundai Sonata Hybrid is rated "better than typical".
- What are the most common problems with the 2021 Hyundai Sonata Hybrid?
- The most-reported component is electrical system, accounting for 49% of complaints on file.
- How many recalls does the 2021 Hyundai Sonata Hybrid have?
- No recalls are on file for this model year.
Data updated 2026-11-01 · Complaints are unverified owner reports filed with NHTSA, not independently verified defects. Methodology.