Hyundai Consumer Affairs has many reports on fuel sloshing and suspension noise.I have called many times.Their number is
800 633 5151.They know of the problems on the 06 Sonata and didn't fix them on the 07. Factory reps and Consumer affairs are very aware however there is no fix.
The
Fuel sloshing or fuel banging is with 3/4 to 4/4 tank of fuel.
The
suspension noise is at low speed in front and rear on all I4 and V6 models.The noise is like a old Chevy with bad shocks.My I4 GLS also has alot of body lean and a floaty ride at highway speed.
I have gone all the way with trying to get a fix.I suggested aftermarket Struts However they say it will void the
warranty.
I guess JD Powers didn't drive a Sonata with a full tank.They were also playing the radio and couldn't hear the suspension noise.
This will be my last Hyundai I will keep it till the warranty is used up. It seems these post don't get answered often or read by Hyundai. What happened to Owner satisfaction.If they want my business they must satisfy me.