A fuel economy system for a vehicle. The vehicle has a power supply, an HVAC system that is operable to heat and/or cool an interior compartment of the vehicle, and a destination system that is operable to estimate a length of time or distance required for the vehicle to arrive at a destination on a predefined route. The system also includes an HVAC control system in communication with the HVAC system. The HVAC control system is operable to regulate a temperature of the vehicle interior compartment by increasing or decreasing power to the HVAC system such that the interior compartment is heated or cooled. The HVAC control system is also operable to automatically reduce power to the HVAC system per a predefined reduced power plan prior to the vehicle reaching the destination.