Where's the "G Man" when we need someone to express some "Audi love"? :D
7-10 years or more is easy if you keep on top of maintenance and repairs. Last Monday I "visited" the LS400 I bought new in 1990, drove 183,500 miles and sold in 2003. It drove and looked like new when I sold it and still looks pretty good at 20 years and something like 275,000 miles.
I bought my 2000 LS400 in 2003 at 38,000 miles and it is still a wonderful car at 120,000 miles. Unless some uncontrollable thirst for something more modern arises or it gets crashed, I plan to drive it until about 2015. (Hmmm, maybe I shouldn't go to the Kansas City Auto Show this afternoon!)
The main advice I have for making these cars last is to do your own minor maintenance (e.g. oil changes, tire rotations), don't let a quick-lube, Wallymart or the like get near your car, find a good indie Lexus repair shop, and have your car serviced religiously every 30,000 miles. "Less is more" when it comes to these cars.
samwifi -- enjoy your "new" LS430!
Thanks for the advise - I really appreciate it. I actually have a repair shop I go to locally here in Vista, CA that works on Toyotas and Lexus among others. He's had the shop for 40 years - his dad owned it first. So, I think I'm on the right track. Man I couldn't be happier - it is the most amazing ride I've experienced. Thanks again, Sam