Hello fellow Sonata owners[/align]Maybe if everyone with a 06 or 07 Sonata calls Hyundai consumer affairs 1 800 633 5151 in the USA they will address the issue of the gas sloshing and the noisy suspension. The I4 and the V6 have different suspensions. My I4 does not have the Kthunk however the front end is very noisy. Maybe if the V6 shocks are installed in the I4 it would fix it. Maybe if they get a lot of calls it will be fixed.[/align]