Rear noise after Tuscon is stopped
 

After my girlfriends 2019 Tuscon is sitting in park for a bit you can hear a tin noise. Almost like someone hit a can with a stick. Anyone else have this issue. Thanks.

If the car is turned off, likely the exhaust system contracting when it cools down, my '11 Sonata does this also.

I too have just noticed this on my 2020 Tucson. What did you do about it?

Just stop by the dealer and have them check it over.
Most likely will stop as the system rusts a little. If it is thermal expansion and contraction , nothing to be concerned about.