AutoUtility currently tracks 10 official NHTSA owner defect complaints for the 2020 Chevrolet Sonic. Electrical System issues are the most frequently reported category, appearing in 6 complaints (60% of submitted records). Zero crashes, fires, injury reports, or fatality reports are cited across these complaint records.
- • Total NHTSA Complaints: 10 reports
- • #1 Reported Problem Area: Electrical System (6 reports • 60% of submitted complaints)
- • Secondary Problem Areas: Powertrain & Transmission (3), Engine & Cooling (2)
- • Crash-Citing Complaints: 0 filings
- • Fire-Citing Complaints: 0 filings
- • Complaints Reporting Injuries / Fatalities: 0 injury filings • 0 fatality filings
Most Reported Problems for 2020 Chevrolet Sonic
Top automotive subsystem defect categories ranked by unique owner complaint volume in federal records
Electrical System
Powertrain & Transmission
Engine & Cooling
Seats & Interior
Fuel & Propulsion System
Recent NHTSA Owner Reports for 2020 Chevrolet Sonic
Representative defect filings submitted by owners to the NHTSA Office of Defects Investigation
"Engine Cooling System (Thermostat Housing / Water Outlet) The vehicle suffered a premature structural failure of the factory engine coolant thermostat housing. The component, which is manufactured from a fragile plastic composite, cracked completely open without warning, causing an immediate, rapid..."
"Purchased from Carvana. Nine days after purchase came out to a dead battery took it to the authorized dealer and they said the battery was a bad cell battery. Replace the battery. Six days after they replaced the battery it was dead again. This time they had it in the shop for two weeks before they..."
"1. What component or system failed or malfunctioned, and is it available for inspection upon request? The passenger seat adjustment mechanism has failed, causing the seat to become stuck in the farthest rear position. The malfunction is likely related to either the motor, seat track, or the..."
"Having trouble with leaks and the evap purge system. I repaired it three times. The vehicle will turn off while driving."
"1st occurence at approximately 37k miles on Vehicle has issue based on climate temperature sensor triggers a computer code 84 vehicle goes into limp mode to prevent engine failure however, this happens instantly no time to react and more than one occasion creating a hazardous driving situation in..."
Complaint History for Chevrolet Sonic
Reported defect complaint volume across sibling model years (2015–2020)
| Model Year | NHTSA Complaints | Crash Reports | Safety Recalls | Detailed Report |
|---|---|---|---|---|
| 2015 Chevrolet Sonic | 114 | 15 | 3 | View 2015 Problems → |
| 2016 Chevrolet Sonic | 48 | 8 | 2 | View 2016 Problems → |
| 2017 Chevrolet Sonic | 37 | 6 | 0 | View 2017 Problems → |
| 2018 Chevrolet Sonic | 14 | 0 | 1 | View 2018 Problems → |
| 2019 Chevrolet Sonic | 8 | 0 | 0 | View 2019 Problems → |
| 2020 Chevrolet Sonic Current Page | 10 | 0 | 0 | Current |
Detailed NHTSA Component Breakdown for 2020 Chevrolet Sonic
Complete distribution of consumer defect reports across all 8 granular NHTSA system and subsystem classifications
| Vehicle Component / System | Total Complaints | Crash Reports | Fire Reports | Reported Injury Entries | Reported Fatality Entries |
|---|---|---|---|---|---|
| Electrical System NHTSA category: ELECTRICAL SYSTEM | 3 | 0 | 0 | 0 | 0 |
| Air Bags NHTSA category: AIR BAGS | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,UNKNOWN OR OTHER,FUEL/PROPULSION SYSTEM | 1 | 0 | 0 | 0 | 0 |
| Engine NHTSA category: ENGINE | 1 | 0 | 0 | 0 | 0 |
| POWER TRAIN,ELECTRICAL SYSTEM | 1 | 0 | 0 | 0 | 0 |
| POWER TRAIN,ENGINE | 1 | 0 | 0 | 0 | 0 |
| Seats & Restraints NHTSA category: SEATS | 1 | 0 | 0 | 0 | 0 |
| STEERING,POWER TRAIN,ELECTRICAL SYSTEM | 1 | 0 | 0 | 0 | 0 |
The complaint records on this page are retrieved directly from the NHTSA Office of Defects Investigation (ODI) public database.
Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.