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4.0
definitely annoying- Typical Repair Cost:
- $50
- Average Mileage:
- 19,900 miles
- Total Complaints:
- 2 complaints
Most Common Solutions:
- engine detonation (1 reports)
- not sure (1 reports)
engine problem
Helpful websites
- No one has added a helpful site for this 2016 Sonata problem yet. Be the first!
A D V E R T I S E M E N T S
Horrible engine noise started right before Thanksgiving of 2020. It sounded like loose little rocks underneath, then a metallic sound like spark knocking. After doing some research and not being able to identify the problem, especially since the noise would be noticeable at times, I was able to get a good mechanic to drive and listen to it and he said to put premium gas.
After that, I kept researching and found out that that noise is known as engine detonation. The easy fix is definitely putting premium gas only, and this is because of some carbon deposits in the fuel injectors and hoses that regular gas produces. Hyundai says to put 87 or higher gas, but their GDI technology wasn't well designed to burn regular gas properly.
Thank God that annoying noise is gone now, at least for the time being.
- Sebastian R., Chesapeake, VA, US