This car's average mileage for its first 51,000 miles is 30,6. On the highway I get 41+ at 70 mph. Add Mercedes legendary comfort and handling and this is a great car. I bought it used in 2009 from a dealer with a full MB warranty for $28 k. I'll never buy a new one again! It is my fourth Benz/first diesel, and I am now a diesel convert. Why drive anything else?