Home · 2019 Chevrolet Sonic · Complaints
These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.
2 of 8 complaints match · Engine · clear filters
The thermostat housing and water pump keeps failing and leaking.The seat heaters dont work. The car started leaking antifreeze real bad which cause it to overheat and lock up. Yes it has been confirm by a dealer that alot of the chevys been coming for new thermostat housing and water pumps. No vehicle was only inspected by a dealer. The overheating like came on and then 10 seconds later the car locked up
NHTSA ODI 11625053
There is no temperature indicator and the car overheats. This caused the hose to the coolant to leak. I had the housing unit replaced but then the car still ran hot. I had the get the whole thermostat replaced. No forum could assist with the replacement of the 2019 as if this year model doesn’t exist and the part needed doesn’t fit properly making my car inoperable.
NHTSA ODI 11585009
Working with the data? Download all 8 complaints as CSV · fetched from NHTSA July 19, 2026