What is the final factor determining whether a vehicle will move?

The amount of traction tires have is crucial in determining whether a vehicle will move. Traction is the frictional grip between the tires and the road surface, allowing the vehicle's drive wheels to effectively transfer power from the engine to the ground. Without sufficient traction, even a powerful engine may struggle to propel the vehicle forward, especially under adverse conditions such as wet, icy, or uneven terrain.

While engine power can contribute to a vehicle's ability to move, it must be effectively utilized through the tires' grip on the surface. Weight distribution also plays a significant role since it influences how much load is placed on each tire, impacting overall traction. Finally, the type of fuel used is less relevant to the immediate ability of a vehicle to move, as all vehicles designed to operate in certain conditions will typically function with the correct fuel, assuming all other mechanical aspects are in order. Thus, traction ultimately determines a vehicle's movement capability.