Assuming that the car is only called upon to run at top speed on level ground, the minimum energy necessary is that to get the car up to top speed. If there is absolutely no frictional or electrical loss, the car can then coast an arbitrarily long distance before being braked to a stop.
In practice, there will be losses, the big one being losses from air drag and rolling friction. There will also be electrical losses in the batteries, engine, and control circuitry. If the car is required to stop and start, not all of the energy necessary to get the car to cruising speed can be recovered when the car is stopped again. In today's gasoline automobiles, none of this energy is recovered; it is all dissipated in the brakes as heat.
If the car needs to maintain at least a minimum speed up a hill, the power necessary to increase the car's and payload's potential energy at the required rate must also come from the battery.
In short, you need a lot more information than you currently have given us to come up with an answer.