I took the Lexus RX400h in for the 30,000 mile service today. I am on a pace to drive 46,500 miles in the first two years. I am averaging 25.2 mpg since I brought the car, up slightly from 25.0 mpg at 20,000 miles. The EPA rating is 24 on the highway and 26 in the city.
Except for the fact that I wish that the cargo area was deeper and the fuel efficiency gauge was more accurate, I continue to be very pleased with the vehicle. Knock on wood, I have not had any problems.