Unbelievably smooth and quiet operation. It has legroom to spare. I rate a car by adjusting the driver's seat where I want it to be when I'm driving and then getting in the backseat and checking out the legroom. Haven't had it long enough to rate the mileage or maintainence. We bought it as a Lexus Certified Preowned vehicle so we have two years of factory warranty plus we purchased an additional three years. We should have bought one of these years ago. Nordehl Unbehaun at Lexus of Knoxville will meet your needs and then some. He was fantastic to work with and finding something to meet our needs.
Previous Mercedes owner....now have 2010 RX 350 and 2010 GX 460 and just got 2011 LS 460 AWD. A soft quiet excellent ride, (but 2010 RX 350 feels more of a driver's car.) Appointments and materials first rate. Excellent fit and finish. Acceleration with V-8 excellent, powerful and controlled.
This is my 11th Lexus vehicle and they never disappoint. The quality of the vehicle and the personal service provided by the dealership are always tops. I have never driven a domestic car or dealt with a domestic dealership that even comes close. The other foreign brands that compete with Lexus are much more expensive and all have their drawbacks.
Nobody makes a better car. The only problem I've ever had with it is replacing a battery. The ride is superior. Indeed, the car is superior in every respect. The car is obsidian and absolutely beautiful. I would keep it but I'm 77 and will need a self driving car within the next few years. So I am buying a Tesla Model S.