YearToAvoid

2020 Hyundai Sonata Transmission & Powertrain Problems

NHTSA lists 24 transmission & powertrain complaints for the 2020 Hyundai Sonata, 13% of all 178 complaints filed for the year. Median mileage at failure was 16,599 miles. No related recalls are listed for this problem area.

Transmission & Powertrain complaints
24
13% of 178
Crashes reported
0
Fires reported
0
Injuries reported
0
Median mileage
16,599 mi
Related recalls
0

Typical transmission symptoms owners report

  • Owners report the transmission or engine stumbling and losing power at low speed, sometimes shuddering to a stop while still in gear.
  • Some describe a hesitation or stall in traffic or at a signal, with the vehicle refusing to restart smoothly and shaking on restart.
  • Several report harsh or delayed shifts after a firmware update, including a two-second lag between pressing the push-button shifter and the transmission responding.
  • Drivers describe the car jerking or bucking during acceleration in lower gears, especially on downshifts.
  • Some report the transmission slipping right after deceleration then unexpectedly re-engaging during acceleration.
  • A few describe long delays of engaging power when accelerating from a stop, taking many seconds to build speed.

When 2020 Hyundai Sonata transmission complaints were filed

First complaint Jul 8, 2020, latest Sep 3, 2026.

2020 Hyundai Sonata transmission & powertrain complaints: complaints filed per month2Jul 2020Mar 2021May 2022Apr 2024Nov 2024May 2025Jun 2026
24 complaints filed with NHTSA from Jul 2020 to Sep 2026; peak Jul 2020 (2).

Transmission & Powertrain recalls for the 2020 Hyundai Sonata

No safety recalls on record for this model year.

Transmission & Powertrain complaints by Sonata model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

  1. 201021 (6%)
  2. 2011173 (5%)
  3. 201297 (6%)
  4. 201394 (5%)
  5. 201454 (7%)
  6. 2015134 (12%)
  7. 201659 (8%)
  8. 201755 (7%)
  9. 201840 (11%)
  10. 20198 (5%)
  11. 202024 (13%)
  12. 202124 (18%)
  13. 202224 (26%)
  14. 202316 (18%)
  15. 20246 (13%)
  16. 20253 (19%)

Frequently asked questions

How many transmission & powertrain complaints does the 2020 Hyundai Sonata have?
NHTSA lists 24 transmission & powertrain complaints for the 2020 Sonata, which is 13% of the 178 total complaints filed for that model year.
At what mileage do 2020 Sonata transmission problems usually appear?
The median mileage at failure among these complaints is 16,599 miles.
Is there a recall for the 2020 Hyundai Sonata transmission?
No related recalls are listed in NHTSA data for this problem area on the 2020 Sonata.
Did the transmission issues cause any crashes or injuries?
NHTSA records show 0 crashes, 0 fires, and 0 injuries associated with these 24 complaints.
Is the 2020 Sonata worse than other years for this issue?
Its 13% share of complaints is higher than most earlier Sonata years shown in the data, though the 2021 (18%) and 2022 (26%) model years report even higher shares.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.