Does the HAFC technology yield the same proportional savings for city as for highway?
Yes, if you currently get 18 city and 22 highway and only achieve the guaranteed 50% increase you would than be at, or very close to, 27 city and 33 highway. It is important to know that if most of your trips are only about 3-5 minutes in length, than this is not a great solution for your driving habits. To experience the mileage savings with the HAFC, most of your trips should be 10 minutes or more.