I took the Lexus RX400h in for the 15,000 mile service this morning. I am on a pace to drive 23,000 miles in the first year. I am averaging 24.8 mpg since I brought the car, down slightly from 25.1 after 3 months and 24.9 at 6 months. The EPA rating is 24 on the highway and 26 in the city.
It is an all wheel drive vehicle. When we tubing with the boy scouts, I was impressed with how sure footed it was in the icy parking lot.
One other note. After 15,000 miles, the brakes are worn only about 10%. Above 10 miles per hour, the RX400h uses the electric motors to brake.