Some people are real world average ranges that are close to the manufacturer suggested numbers and some are under. Here's a thread about it: http://www.toyotachrforum.com/forum/toyota-c-hr-mpg-fuel-economy/1841-fuel-rating-2.html
I suppose with new cars, it may need time to adjust to your driving style before giving out accurate numbers, or it could be dependent on how heavy footed you are.
I suppose with new cars, it may need time to adjust to your driving style before giving out accurate numbers, or it could be dependent on how heavy footed you are.