2020 Hyundai Sonata Transmission & Power Train Problems
NHTSA component category: POWER TRAIN · data through 07/12/2026
Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
How power train ranks on this vehicle
Share of the 167 complaints citing each category; one complaint can cite several. Full breakdown on the 2020 Hyundai Sonata overview page.
What owners report
“I was on my way back home from Alexandria LA on [XXX] when I heard like the sound of an blow out tire but wasnât…”NHTSA complaint 11597170 — filed 06/27/2024
“Vechile shut down completely on the highway, engine's been replaced twice, Catalytic converter, Turbo was replaced three times, Battery oxygen sensors, timing belt all have…”NHTSA complaint 11590819 — filed 05/26/2024
“The contact owns a 2020 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the shift assists malfunction warning light illuminated. The…”NHTSA complaint 11581941 — filed 04/09/2024
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Power Train complaints by year filed
Frequently asked questions
Does the 2020 Hyundai Sonata have transmission & power train problems?
Power Train is the #5 most-reported problem area on the 2020 Hyundai Sonata: 23 of 167 complaints on file (13.8%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2020 Hyundai Sonata have in total?
167 complaints were on file with NHTSA as of 07/12/2026. Across all categories, 4 involved a crash, 1 involved a fire, 4 reported injuries, and none reported deaths.
What does NHTSA's power train category include?
NHTSA groups complaints about the transmission (automatic or manual), driveline, axles, transfer case and related parts under a single component category called POWER TRAIN. This page reports that category as NHTSA defines it.
