2006 Hyundai Sonata engine and engine cooling problems

30 owner complaints filed with NHTSA name the engine and engine cooling on the 2006 Hyundai Sonata — 3% of all complaints for this model year.

Engine and Engine Cooling complaints

share of all complaints

43,596 mi

median reported incident mileage

0 / 1

crash / fire reports

What owners report

“The contact owns a 2006 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the vehicle experienced a loss of automotive power. No warning light was illuminated. The contact was able to pull over to the shoulder of the roadway and noticed that engine oil was leaking onto…”
filed Dec 22, 2025
“2006 hyundai sonata. Consumer writes in regards to replacement of drive belt issues. *smd the consumer stated there were no issues with the vehicle, prior to the drive belts being replaced. A few weeks after the belts were replaced, the vehicle was not performing well when driven. There was…”
filed Oct 29, 2015

Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.

This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
23-EM-005H · Service Bulletin/Repair Instructions · issued Oct 13, 2023
Follow the guidelines outlined in this bulletin to inspect and clean or replace certain components of the engine intake system accordingly during engine short block or sub-assembly replacement.
22-EM-010H · Service Bulletin/Repair Instructions · issued Jul 28, 2022