One of the software upgrades was to increase mileage by raising the mph the electric motors ran to before they shut off for the gas engine. The electric motors use to cut out at about 65mph but now go up to around 75mph before they cut out. The other did something with the cruise feature making it more efficient. Yes we got the $1000 also and was more than happy to take it. When we purchased our expectations were just 37mph because more of our driving in on freeway than city streets. C-Max gets better mileage on city streets. And we go down grade to the big city and uphill with a wind in our faces on the way home. Wind comes up in the afternoon so no help with the mileage going into the city. With the updates we are averaging 41mpg with mostly AZ freeway driving & speeds. One of the software upgrades had to do with airbags. There has been about 4 thus far and we were called for two more due now but have not had time to take the car in. With the slow computer systems at our dealer it takes up to 4 hours for a software update.
rocmoc n AZ/Mexico