91 Octane made no difference in my case.The Turbo 1.6 liter engine uses a very light grade of oil, which should be changed very often - but even that may not be enough for this engine. The highest octane fuel might be necessary to prevent pinging when working hard. It's s shame if this is the case.
I just bought a 2022 Tuscon turbo blue trim and starting to have the same problem. I found this forum searching to see if anyone else was having this issue. I only have 2000 miles and I am so frustrated and disgusted with this. I will be calling the dealer tomorrow to complain about this. I hope that Hyundai addresses this issue. I have been driving Toyotas and Subarus for years and seriously considering going back. This was my first Hyundai. I will be watching for your comments and will report mine as soon as I find something out. Thanks for posting this issue,On several occasions, I have noticed the 1.6T engine will significantly ping (a rattling-tin-can-like sound coming from the engine).
This condition is reproducible and ONLY occurs when the vehicle has been driven for a significant amount of time on a long distance trip (say, 50 mi or more) where the engine is allowed to reach normal operating temperature AND the vehicle is subsequently shut off for a short period of 10-30 minutes (about the time for a typical store visit). After restarting the vehicle and beginning to drive after that short period is when the noticeable pinging begins (I'll call this the "second drive").
It's as if a sensor or computer module is misinterpreting engine conditions during that "second drive" described above and not calculating the correct air/fuel mixture. When the pinging is experienced, it is quite noticeable and I have tried different drive modes and increasing the RPMs using the paddle shifters with no improvement. I have also tried pulling over and restarting the vehicle, and again with the same pinging outcome. Of course in EV mode, this condition doesn't apply.
If the Tucson Hybrid is allowed to completely cool down, it drives normally again (no engine pinging).
After some research, others describe having had the same experience with the 1.6 Turbo engine as far back as 2012. The vehicle is not throwing any codes based on my scan tool, but it's possible the vehicle is too new for my scanner.
If anyone else notices a similar condition on the Tucson Hybrid, please report here. My concern taking this to a dealership at this point is that it's challenging for a service center to reproduce because of the time it takes, and, I don't want to hear, "we couldn't reproduce the scenario". If enough others are experiencing the same, it demonstrates a systematic problem. Otherwise, it could be an isolated problem on my vehicle that just needs to be addressed.
Spark Plugs recommended every 46k mi. As for engine issue, it continues to persist despite being at the dealer multiple times. No error codes -> no diagnosis.I'm thinking of moving up to the hybrid from the 2.5 engine that I currently have, now this pinging has me concerned. Would someone look in their owners manual to check when the sparkplugs should be replaced on the 1.6 engine.