I have a 2013 fusion hybrid that I bought new. I have 50,000 miles on the car with a new set of tires. We had the latest factory upgrades completed in June. Before the upgrade I was averaging 42-45 mpg.. it was great. I drive about 65 mpg and mostly hwy miles. after the upgrade my mpg dropped instantly to 35-38 mpg. my engine runs more and the battery indicator never goes above 3/4. I took it back to the dealer and they said it was nothing they could do and to call Ford. I called Ford and they said to take it back to the dealer and said they would document my call. Anyone have these issues?