My 1992 Toyota truck is listed at 24mpg for highway but most users averaged 25.1 for both highway and city. I got 35mpg hauling a heavy trailer across country. All depends on how you drive. Software upgrade might have given it more power and takeoff so she drove differently afterwards.
tedehale, agree with you. Driving habits are important. Generally the MPG estimate is very close. And car maintainance & care also important to keep the car in top shape. Some people hardly change the oil, or do any tune-up at all. Then blame the car for not good at MPG.