Traded our X5 for a Prius last year. Have driven it over 24,000 miles so far, including 3 round trips from OH to SoWal, and love it! Usually average 50-52 on the highway and 48-50 in town. But, it uses regular gas. The X5 required premium. This car is quiet, very comfortable, has great back seats, cargo area, adequate acceleration and maintains speed on cruise control even through the mountains of TN. I couldn't be more satisfied.