Agree with Peril take it for a 30 Minute ride so you can really see how she feels. Some find the seat uncomfortable over time. Don't know what sorta mileage your expecting but I get 28~30 miles per gallon with care on the highway.
Love out '11 Legacy 3.6 which has been rock solid for 118K miles but at 13 years much of the usual stuff has needed replacing.