I have a 2009 4.6L. Currently at 125k, bought it 3 years ago at about 85k.
Overall it's been a pretty solid car. It burns about 2 quarts of oil between my 6k mile oil changes. The back-up camera slowly fizzled out over the period of about a year. I replaced the driver side
wheel bearing. Strangely, oil filters are harder to come by than they should be I think. I also feel like the radio tuner isn't as strong as my last couple of cars either, but I don't have any solid proof of that. I do want to point out that the car handled the last Chicago winter like a champ. It chugged a bit, but started right up when it was -24F outside and got me to and from work like a champ. As for tires, I went a little unconventional. I put a 255/50/18 Nitto NT420S on it to correct for the speedo reading a bit faster than the car was actually going, and that totally fixed it. Those tires and RWD handled the snow like a rockstar, even if they are a bit noisy.
I would like to note, this car has the best sounding factory sound system I have ever heard, I wish it had more/deeper bass, but I am somewhat of a bass head.
My biggest complaint is the brakes I think. I replaced what looked like Hyundai OEM brake pads/rotors due to bad squealing, but they were not totally worn out. I did a "fancy" drilled/slotted brake kit (Power Stop Z23 kit) and they worked great for a month and started squealing too. I got them replaced under warranty from power stop, and they worked better for longer, but its back to being terribly noisy especially after the pads get a bit of heat in them. And its only the front brakes, not the rears. And they stop this lead sled REALLY well, just really noisy. I am going to try a different brand of pad soon.
I will likely keep it for a few more years, and look into getting a used G90, since I was so impressed with this car. I will probably also look into a used LS460L too.