Russ Milne Ford

I Purchased A 2007 Ford Edge from Russ Milne Ford, on 10-14-2010. Paid in cash. On 2-14-2012 I took the car in for getting bad mileage, was averaging 13.4 miles @ gallon of combbined city and highway dri 10-14-2010. Paid in cash. On 2-14-2012 I took the car in for getting bad mileage, was averaging 13.4 miles @ gallon of combbined city and highway driving,computor in car said 15.6,average 19. One hour later they called me and rhat the car was ready to be picked up. I asked them what did you find wroing? They took it on a test drive,and hooked it up to a computor. drove it 7.2 miles and averaged 20 miles a gallon. And then charged me $90.00for service charge. I also bought a full warranty for $1,899 for 60,000 Miles. I showed them 2 receipts when i purchased gasoline,the last fillup was on 1-30-2012,I had 173 miles on the odometer and purchase 12.548 gallons of gas. 173 Divided into 12.548=13.7 MILES A GALLONG NOT 20 AS THEY CLAIM, i told them this result was unacceptable, and I would not pay the 90.00 Dollars, buth then my wife paid it,I want this matter fixed the sticker on the windshield says 18 City, 25 Highway. The General Manager then talked to me, he calmed me down,and spoke to me respectfully, told me to came back in April,when the weater was warmer, and they would not charge me the 90 dollars. The bottom line,my problem was NOT TAKING CARE OF!! I then contaced Ford Motor CO. they told me that they can do nothin for me,but to take the car to another dealership, and if I want they have to refund me fot the warranty of 1,899 Dollars. More