I recently purchased a Subaru Outback 2.5i Limited Automatic transmission model. I do mostly city driving in upper Michigan area. I am getting 14 to 15 MPG with very careful driving in city. The dealer says I should go on a long drive and this will improve the mileage otherwise does not offer any solution. I doubt that a long drive on a highway will cure this problem after all i am not going to go daily on highway just to get better MPG. Any suggestions?